fix(nar_bridge): Don't check if root node has a name in nar generation

Nar-bridge tried to parse the name of the protobuf node encoded in the
URL into a PathComponent but this name was empty, leading to an error
when the user tried to retrieve the nar file. This commit removes this
useless step and fixes the errors caused by it

Change-Id: I2996cdd2e0107133e502748947298f512f1cc521

.gitreview

@@ -0,0 +1,5 @@
+[gerrit]
+host=cl.tvl.fyi
+port=29418
+project=depot
+defaultbranch=canon

.mailmap

@@ -1 +1,2 @@
 Alyssa Ross <hi@alyssa.is>
+Aspen Smith <root@gws.fyi> <aspen@gws.fyi> <grfn@gws.fyi>

README.md

@@ -15,10 +15,9 @@ partially see this as [an experiment][] in tooling for monorepos.
 
 ## Services
 
-* Source code is available primarily through Sourcegraph on
+* Source code can be viewed primarily via `cgit-pink` on
-  [cs.tvl.fyi](https://cs.tvl.fyi), where it is searchable and even semantically
+  [code.tvl.fyi](https://code.tvl.fyi), with code search being available through
-  indexed. A lower-tech view of the repository is also available via cgit-pink
+  Livegrep on [grep.tvl.fyi](https://grep.tvl.fyi).
-  on [code.tvl.fyi](https://code.tvl.fyi).
 
   The repository can be cloned using `git` from `https://cl.tvl.fyi/depot`.
 

corp/rih/frontend/Cargo.lock

@@ -1500,19 +1500,20 @@ checksum = "9c8d87e72b64a3b4db28d11ce29237c246188f4f51057d65a7eab63b7987e423"
 
 [[package]]
 name = "wasm-bindgen"
-version = "0.2.92"
+version = "0.2.93"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "4be2531df63900aeb2bca0daaaddec08491ee64ceecbee5076636a3b026795a8"
+checksum = "a82edfc16a6c469f5f44dc7b571814045d60404b55a0ee849f9bcfa2e63dd9b5"
 dependencies = [
  "cfg-if",
+ "once_cell",
  "wasm-bindgen-macro",
 ]
 
 [[package]]
 name = "wasm-bindgen-backend"
-version = "0.2.92"
+version = "0.2.93"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "614d787b966d3989fa7bb98a654e369c762374fd3213d212cfc0251257e747da"
+checksum = "9de396da306523044d3302746f1208fa71d7532227f15e347e2d93e4145dd77b"
 dependencies = [
  "bumpalo",
  "log",
@@ -1537,9 +1538,9 @@ dependencies = [
 
 [[package]]
 name = "wasm-bindgen-macro"
-version = "0.2.92"
+version = "0.2.93"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "a1f8823de937b71b9460c0c34e25f3da88250760bec0ebac694b49997550d726"
+checksum = "585c4c91a46b072c92e908d99cb1dcdf95c5218eeb6f3bf1efa991ee7a68cccf"
 dependencies = [
  "quote",
  "wasm-bindgen-macro-support",
@@ -1547,9 +1548,9 @@ dependencies = [
 
 [[package]]
 name = "wasm-bindgen-macro-support"
-version = "0.2.92"
+version = "0.2.93"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "e94f17b526d0a461a191c78ea52bbce64071ed5c04c9ffe424dcb38f74171bb7"
+checksum = "afc340c74d9005395cf9dd098506f7f44e38f2b4a21c6aaacf9a105ea5e1e836"
 dependencies = [
  "proc-macro2",
  "quote",
@@ -1560,9 +1561,9 @@ dependencies = [
 
 [[package]]
 name = "wasm-bindgen-shared"
-version = "0.2.92"
+version = "0.2.93"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "af190c94f2773fdb3729c55b007a722abb5384da03bc0986df4c289bf5567e96"
+checksum = "c62a0a307cb4a311d3a07867860911ca130c3494e8c2719593806c08bc5d0484"
 
 [[package]]
 name = "web-sys"

corp/rih/frontend/Cargo.toml

@@ -19,7 +19,7 @@ yew-router = "0.17"
 wasm-bindgen-futures = "0.4"
 
 # needs to be in sync with nixpkgs
-wasm-bindgen = "= 0.2.92"
+wasm-bindgen = "= 0.2.93"
 uuid = { version = "1.3.3", features = ["v4", "serde"] }
 
 [dependencies.serde]

corp/russian/predlozhnik/Cargo.lock

@@ -363,19 +363,20 @@ checksum = "49874b5167b65d7193b8aba1567f5c7d93d001cafc34600cee003eda787e483f"
 
 [[package]]
 name = "wasm-bindgen"
-version = "0.2.92"
+version = "0.2.93"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "4be2531df63900aeb2bca0daaaddec08491ee64ceecbee5076636a3b026795a8"
+checksum = "a82edfc16a6c469f5f44dc7b571814045d60404b55a0ee849f9bcfa2e63dd9b5"
 dependencies = [
  "cfg-if",
+ "once_cell",
  "wasm-bindgen-macro",
 ]
 
 [[package]]
 name = "wasm-bindgen-backend"
-version = "0.2.92"
+version = "0.2.93"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "614d787b966d3989fa7bb98a654e369c762374fd3213d212cfc0251257e747da"
+checksum = "9de396da306523044d3302746f1208fa71d7532227f15e347e2d93e4145dd77b"
 dependencies = [
  "bumpalo",
  "log",
@@ -400,9 +401,9 @@ dependencies = [
 
 [[package]]
 name = "wasm-bindgen-macro"
-version = "0.2.92"
+version = "0.2.93"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "a1f8823de937b71b9460c0c34e25f3da88250760bec0ebac694b49997550d726"
+checksum = "585c4c91a46b072c92e908d99cb1dcdf95c5218eeb6f3bf1efa991ee7a68cccf"
 dependencies = [
  "quote",
  "wasm-bindgen-macro-support",
@@ -410,9 +411,9 @@ dependencies = [
 
 [[package]]
 name = "wasm-bindgen-macro-support"
-version = "0.2.92"
+version = "0.2.93"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "e94f17b526d0a461a191c78ea52bbce64071ed5c04c9ffe424dcb38f74171bb7"
+checksum = "afc340c74d9005395cf9dd098506f7f44e38f2b4a21c6aaacf9a105ea5e1e836"
 dependencies = [
  "proc-macro2",
  "quote",
@@ -423,9 +424,9 @@ dependencies = [
 
 [[package]]
 name = "wasm-bindgen-shared"
-version = "0.2.92"
+version = "0.2.93"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "af190c94f2773fdb3729c55b007a722abb5384da03bc0986df4c289bf5567e96"
+checksum = "c62a0a307cb4a311d3a07867860911ca130c3494e8c2719593806c08bc5d0484"
 
 [[package]]
 name = "web-sys"

corp/russian/predlozhnik/Cargo.toml

@@ -9,4 +9,4 @@ lazy_static = "1.4"
 yew = "0.19"
 
 # needs to be in sync with nixpkgs
-wasm-bindgen = "= 0.2.92"
+wasm-bindgen = "= 0.2.93"

docs/importing-projects.md

@@ -0,0 +1,91 @@
+Importing projects into depot
+=============================
+
+Before importing an existing `git`-based project into depot, a few questions
+need to be answered:
+
+
+* Is the project licensed under a free software license, or public domain?
+* Do you need to import existing history?
+* Do you need to export new history with hashes that continue on from the old
+  history? (e.g. importing an existing repository, and exporting from depot to
+  the old upstream)
+
+Think about this and then pick an approach below:
+
+## Import with no history (just commit)
+
+Simply copy the files to where you want them to be in depot, and commit. Nothing
+else to do!
+
+## Import without continuous history (subtree merge)
+
+This import approach lets you drop an existing project into depot, keep its
+existing history, but not retain the ability to continue external history.
+
+This means that if you, for example, import a project from a different git host
+using this method, and then continue to commit to it inside of depot, you will
+not be able to export a history consistent with your previous hashes using
+`josh`.
+
+Commit hashes before the import will exist in depot and be valid.
+
+Still, this approach might be viable if a project "moves into" depot, or has
+nothing depending on it externally.
+
+1. Pick a location in depot where you want your project to be (`$loc` from now on).
+2. Fetch your project into the same git store as your depot clone (e.g. by
+   adding it as an upstream and fetching it).
+3. Pick the commit you want to merge (`$commit` from now on).
+4. Run `git subtree add --prefix=$loc $commit`, which will create the correct
+   merge commit.
+5. Ensure Gerrit [knows about your commit](#preparing-merges-in-gerrit) for the
+   parent that is being merged.
+6. Modify the merge commit's message to start with `subtree($project_name):`.
+   Gerrit **will not** allow merge commits that do not follow this format.
+7. Push your subtree commit for review as normal.
+
+## Import with continuous history
+
+This approach imports the history using `josh`, which means that external
+history before/after the import is consistent (you can continue committing in
+`depot`, export the history back out, and from an external perspective nothing
+changes).
+
+This is what we did with repositories like `nix-1p` and `nixery`.
+
+Note: Inside of depot, the pre-import commit hashes will **not make sense**.
+`josh` will rewrite them in such a way that exporting the project will yield the
+same hashes, but this rewriting changes the hashes of your commits inside of
+depot.
+
+1. Pick a location in depot where you want your project to be (`$loc`).
+2. Fetch your project into the same git store as your depot clone (e.g. by
+   adding it as an upstream and fetching it).
+3. Check out the commit you want to merge into depot.
+4. Run `josh-filter ":prefix=$loc"`, and take note of the `FILTERED_HEAD` ref
+   that it produces (`$filtered` from now on).
+5. Ensure Gerrit [knows about the filtered commit](#preparing-merges-in-gerrit).
+6. Merge the filtered commit into depot using a standard merge, but make sure to
+   add the `--allow-unrelated-histories` flag. Your commit message **must**
+   start with `subtree($project_name):`, otherwise Gerrit will not let you push
+   a merge.
+7. Push the merge commit for review as usual.
+
+------------------------------------------------------
+
+## Preparing merges in Gerrit
+
+When pushing a merge to Gerrit, it needs to know about all ancestors of the
+merge, otherwise it will try to interpret commits as new CLs and reject them for
+not having a change ID (or create a huge number of CLs, if they do have one).
+
+To prevent this, we have a special git ref called `subtree-staging` which you
+can push external trees to.
+
+Access to `subtree-staging` has to be granted by a TVL admin, so ping tazjin,
+lukegb, flokli, sterni and so on before proceeding.
+
+1. Determine the commit you want to merge (`$commit`).
+2. Run `git push -f $commit origin/subtree-staging` (or replace `origin` with
+   whatever the TVL Gerrit remote is called in your clone).

nix/buildBazelPackageNG/bazelRulesJavaHook/default.nix

@@ -1,6 +1,7 @@
 { makeSetupHook }:
 
-makeSetupHook {
+makeSetupHook
+{
   name = "rules_java_bazel_hook";
   substitutions = {
     local_java = ./local_java;

nix/buildBazelPackageNG/bazelRulesNodeJS5Hook/default.nix

@@ -37,7 +37,9 @@ let
       cp -R . $out
     '';
   };
-in makeSetupHook {
+in
+makeSetupHook
+{
   name = "bazelbuild-rules_nodejs-5-hook";
   propagatedBuildInputs = [
     nodejs

nix/buildBazelPackageNG/buildBazelPackageNG.nix

@@ -16,12 +16,16 @@
 
 let
   cleanAttrs = lib.flip removeAttrs [
-    "bazelTargets" "depsHash" "extraCacheInstall" "extraBuildSetup" "extraBuildInstall"
+    "bazelTargets"
+    "depsHash"
+    "extraCacheInstall"
+    "extraBuildSetup"
+    "extraBuildInstall"
   ];
   attrs = cleanAttrs baseAttrs;
 
   base = stdenv.mkDerivation (attrs // {
-    nativeBuildInputs = (attrs.nativeBuildInputs or []) ++ [
+    nativeBuildInputs = (attrs.nativeBuildInputs or [ ]) ++ [
       bazel
     ];
 
@@ -69,7 +73,7 @@ let
 
     inherit cache;
 
-    nativeBuildInputs = (base.nativeBuildInputs or []) ++ [
+    nativeBuildInputs = (base.nativeBuildInputs or [ ]) ++ [
       coreutils
     ];
 
@@ -102,4 +106,5 @@ let
       runHook postInstall
     '';
   });
-in build
+in
+build

nix/writers/default.nix

@@ -23,7 +23,6 @@ let
     { name
     , dependencies ? [ ]
     , doCheck ? true
-    ,
     }: src:
     (if doCheck then testRustSimple else pkgs.lib.id)
       (pkgs.buildRustCrate ({

ops/besadii/default.nix

@@ -1,5 +1,5 @@
 # This program is used as a Gerrit hook to trigger builds on
-# Buildkite, Sourcegraph reindexing and other maintenance tasks.
+# Buildkite and perform other maintenance tasks.
 { depot, ... }:
 
 depot.nix.buildGo.program {

ops/besadii/main.go

@@ -8,7 +8,6 @@
 //
 // Gerrit (ref-updated) hook:
 // - Trigger Buildkite CI builds
-// - Trigger SourceGraph repository index updates
 //
 // Buildkite (post-command) hook:
 // - Submit CL verification status back to Gerrit
@@ -55,10 +54,6 @@ type config struct {
 	BuildkiteProject string `json:"buildkiteProject"`
 	BuildkiteToken   string `json:"buildkiteToken"`
 	GerritChangeName string `json:"gerritChangeName"`
-
-	// Optional configuration for Sourcegraph trigger updates.
-	SourcegraphUrl   string `json:"sourcegraphUrl"`
-	SourcegraphToken string `json:"sourcegraphToken"`
 }
 
 // buildTrigger represents the information passed to besadii when it
@@ -154,11 +149,6 @@ func loadConfig() (*config, error) {
 		return nil, fmt.Errorf("invalid 'gerritChangeName': %s", cfg.GerritChangeName)
 	}
 
-	// Rudimentary config validation logic
-	if cfg.SourcegraphUrl != "" && cfg.SourcegraphToken == "" {
-		return nil, fmt.Errorf("'SourcegraphToken' must be set if 'SourcegraphUrl' is set")
-	}
-
 	if cfg.Repository == "" || cfg.Branch == "" {
 		return nil, fmt.Errorf("missing repository configuration (required: repository, branch)")
 	}
@@ -299,26 +289,6 @@ func triggerBuild(cfg *config, log *syslog.Writer, trigger *buildTrigger) error
 	return nil
 }
 
-// Trigger a Sourcegraph repository index update.
-//
-// https://docs.sourcegraph.com/admin/repo/webhooks
-func triggerIndexUpdate(cfg *config, log *syslog.Writer) error {
-	req, err := http.NewRequest("POST", cfg.SourcegraphUrl, nil)
-	if err != nil {
-		return err
-	}
-
-	req.Header.Add("Authorization", "token "+cfg.SourcegraphToken)
-
-	_, err = http.DefaultClient.Do(req)
-	if err != nil {
-		return fmt.Errorf("failed to trigger Sourcegraph index update: %w", err)
-	}
-
-	log.Info("triggered sourcegraph index update")
-	return nil
-}
-
 // Gerrit passes more flags than we want, but Rob Pike decided[0] in
 // 2013 that the Go art project will not allow users to ignore flags
 // because he "doesn't like it". This function allows users to ignore
@@ -458,13 +428,6 @@ func gerritHookMain(cfg *config, log *syslog.Writer, trigger *buildTrigger) {
 	if err != nil {
 		log.Err(fmt.Sprintf("failed to trigger Buildkite build: %s", err))
 	}
-
-	if cfg.SourcegraphUrl != "" && trigger.ref == cfg.Branch {
-		err = triggerIndexUpdate(cfg, log)
-		if err != nil {
-			log.Err(fmt.Sprintf("failed to trigger sourcegraph index update: %s", err))
-		}
-	}
 }
 
 func postCommandMain(cfg *config) {

ops/buildkite/tvl.tf

@@ -8,7 +8,9 @@ terraform {
   }
 
   backend "s3" {
-    endpoint = "https://objects.dc-sto1.glesys.net"
+    endpoints = {
+      s3 = "https://objects.dc-sto1.glesys.net"
+    }
     bucket   = "tvl-state"
     key      = "terraform/tvl-buildkite"
     region   = "glesys"
@@ -16,6 +18,8 @@ terraform {
     skip_credentials_validation = true
     skip_region_validation      = true
     skip_metadata_api_check     = true
+    skip_requesting_account_id  = true
+    skip_s3_checksum            = true
   }
 }
 

ops/journaldriver/Cargo.lock

@@ -4,18 +4,18 @@ version = 3
 
 [[package]]
 name = "aho-corasick"
-version = "1.1.2"
+version = "1.1.3"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "b2969dcb958b36655471fc61f7e416fa76033bdd4bfed0678d8fee1e2d07a1f0"
+checksum = "8e60d3430d3a69478ad0993f19238d2df97c507009a52b3c10addcd7f6bcb916"
 dependencies = [
  "memchr",
 ]
 
 [[package]]
 name = "anyhow"
-version = "1.0.75"
+version = "1.0.86"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "a4668cab20f66d8d020e1fbc0ebe47217433c1b6c8f2040faf858554e394ace6"
+checksum = "b3d1d046238990b9cf5bcde22a3fb3584ee5cf65fb2765f454ed428c7a0063da"
 
 [[package]]
 name = "base64"
@@ -25,9 +25,9 @@ checksum = "9e1b586273c5702936fe7b7d6896644d8be71e6314cfe09d3167c95f712589e8"
 
 [[package]]
 name = "bitflags"
-version = "2.4.1"
+version = "2.6.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "327762f6e5a765692301e5bb513e0d9fef63be86bbc14528052b1cd3e6f03e07"
+checksum = "b048fb63fd8b5923fc5aa7b340d8e156aec7ec02f0c78fa8a6ddc2613f6f71de"
 
 [[package]]
 name = "build-env"
@@ -37,11 +37,11 @@ checksum = "e068f31938f954b695423ecaf756179597627d0828c0d3e48c0a722a8b23cf9e"
 
 [[package]]
 name = "cc"
-version = "1.0.84"
+version = "1.1.15"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "0f8e7c90afad890484a21653d08b6e209ae34770fb5ee298f9c699fcc1e5c856"
+checksum = "57b6a275aa2903740dc87da01c62040406b8812552e97129a63ea8850a17c6e6"
 dependencies = [
- "libc",
+ "shlex",
 ]
 
 [[package]]
@@ -73,9 +73,9 @@ dependencies = [
 
 [[package]]
 name = "curl"
-version = "0.4.44"
+version = "0.4.46"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "509bd11746c7ac09ebd19f0b17782eae80aadee26237658a6b4808afb5c11a22"
+checksum = "1e2161dd6eba090ff1594084e95fd67aeccf04382ffea77999ea94ed42ec67b6"
 dependencies = [
  "curl-sys",
  "libc",
@@ -83,14 +83,14 @@ dependencies = [
  "openssl-sys",
  "schannel",
  "socket2",
- "winapi",
+ "windows-sys 0.52.0",
 ]
 
 [[package]]
 name = "curl-sys"
-version = "0.4.68+curl-8.4.0"
+version = "0.4.74+curl-8.9.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "b4a0d18d88360e374b16b2273c832b5e57258ffc1d4aa4f96b108e0738d5752f"
+checksum = "8af10b986114528fcdc4b63b6f5f021b7057618411046a4de2ba0f0149a097bf"
 dependencies = [
  "cc",
  "libc",
@@ -98,14 +98,14 @@ dependencies = [
  "openssl-sys",
  "pkg-config",
  "vcpkg",
- "windows-sys",
+ "windows-sys 0.52.0",
 ]
 
 [[package]]
 name = "deranged"
-version = "0.3.9"
+version = "0.3.11"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "0f32d04922c60427da6f9fef14d042d9edddef64cb9d4ce0d64d0685fbeb1fd3"
+checksum = "b42b6fa04a440b495c8b04d0e71b707c585f83cb9cb28cf8cd0d976c315e31b4"
 dependencies = [
  "powerfmt",
  "serde",
@@ -113,9 +113,9 @@ dependencies = [
 
 [[package]]
 name = "env_logger"
-version = "0.10.1"
+version = "0.10.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "95b3f3e67048839cb0d0781f445682a35113da7121f7c949db0e2be96a4fbece"
+checksum = "4cd405aab171cb85d6735e5c8d9db038c17d3ca007a4d2c25f337935c3d90580"
 dependencies = [
  "humantime",
  "is-terminal",
@@ -124,16 +124,6 @@ dependencies = [
  "termcolor",
 ]
 
-[[package]]
-name = "errno"
-version = "0.3.6"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "7c18ee0ed65a5f1f81cac6b1d213b69c35fa47d4252ad41f1486dbd8226fe36e"
-dependencies = [
- "libc",
- "windows-sys",
-]
-
 [[package]]
 name = "foreign-types"
 version = "0.3.2"
@@ -178,9 +168,9 @@ checksum = "aa9a19cbb55df58761df49b23516a86d432839add4af60fc256da840f66ed35b"
 
 [[package]]
 name = "hermit-abi"
-version = "0.3.3"
+version = "0.4.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "d77f7ec81a6d05a3abb01ab6eb7590f6083d08449fe5a1c8b1e620283546ccb7"
+checksum = "fbf6a919d6cf397374f7dfeeea91d974c7c0a7221d0d0f4f20d859d329e53fcc"
 
 [[package]]
 name = "humantime"
@@ -190,20 +180,20 @@ checksum = "9a3a5bfb195931eeb336b2a7b4d761daec841b97f947d34394601737a7bba5e4"
 
 [[package]]
 name = "is-terminal"
-version = "0.4.9"
+version = "0.4.13"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "cb0889898416213fab133e1d33a0e5858a48177452750691bde3666d0fdbaf8b"
+checksum = "261f68e344040fbd0edea105bef17c66edf46f984ddb1115b775ce31be948f4b"
 dependencies = [
  "hermit-abi",
- "rustix",
+ "libc",
- "windows-sys",
+ "windows-sys 0.52.0",
 ]
 
 [[package]]
 name = "itoa"
-version = "1.0.9"
+version = "1.0.11"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "af150ab688ff2122fcef229be89cb50dd66af9e01a4ff320cc137eecc9bacc38"
+checksum = "49f1f14873335454500d59611f1cf4a4b0f786f9ac11f4312a78e4cf2566695b"
 
 [[package]]
 name = "journaldriver"
@@ -224,15 +214,15 @@ dependencies = [
 
 [[package]]
 name = "lazy_static"
-version = "1.4.0"
+version = "1.5.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "e2abad23fbc42b3700f2f279844dc832adb2b2eb069b2df918f455c4e18cc646"
+checksum = "bbd2bcb4c963f2ddae06a2efc7e9f3591312473c50c6685e1f298068316e66fe"
 
 [[package]]
 name = "libc"
-version = "0.2.150"
+version = "0.2.158"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "89d92a4743f9a61002fae18374ed11e7973f530cb3a3255fb354818118b2203c"
+checksum = "d8adc4bb1803a324070e64a98ae98f38934d91957a99cfb3a43dcbc01bc56439"
 
 [[package]]
 name = "libsystemd-sys"
@@ -247,9 +237,9 @@ dependencies = [
 
 [[package]]
 name = "libz-sys"
-version = "1.1.12"
+version = "1.1.20"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "d97137b25e321a73eef1418d1d5d2eda4d77e12813f8e6dead84bc52c5870a7b"
+checksum = "d2d16453e800a8cf6dd2fc3eb4bc99b786a9b90c663b8559a5b1a041bf89e472"
 dependencies = [
  "cc",
  "libc",
@@ -257,17 +247,11 @@ dependencies = [
  "vcpkg",
 ]
 
-[[package]]
-name = "linux-raw-sys"
-version = "0.4.11"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "969488b55f8ac402214f3f5fd243ebb7206cf82de60d3172994707a4bcc2b829"
-
 [[package]]
 name = "log"
-version = "0.4.20"
+version = "0.4.22"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "b5e6163cb8c49088c2c36f57875e58ccd8c87c7427f7fbd50ea6710b2f3f2e8f"
+checksum = "a7a70ba024b9dc04c27ea2f0c0548feb474ec5c54bba33a7f72f873a39d07b24"
 
 [[package]]
 name = "medallion"
@@ -285,21 +269,27 @@ dependencies = [
 
 [[package]]
 name = "memchr"
-version = "2.6.4"
+version = "2.7.4"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "f665ee40bc4a3c5590afb1e9677db74a508659dfd71e126420da8274909a0167"
+checksum = "78ca9ab1a0babb1e7d5695e3530886289c18cf2f87ec19a575a0abdce112e3a3"
+
+[[package]]
+name = "num-conv"
+version = "0.1.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "51d515d32fb182ee37cda2ccdcb92950d6a3c2893aa280e540671c2cd0f3b1d9"
 
 [[package]]
 name = "once_cell"
-version = "1.18.0"
+version = "1.19.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "dd8b5dd2ae5ed71462c540258bedcb51965123ad7e7ccf4b9a8cafaa4a63576d"
+checksum = "3fdb12b2476b595f9358c5161aa467c2438859caa136dec86c26fdd2efe17b92"
 
 [[package]]
 name = "openssl"
-version = "0.10.59"
+version = "0.10.66"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "7a257ad03cd8fb16ad4172fedf8094451e1af1c4b70097636ef2eac9a5f0cc33"
+checksum = "9529f4786b70a3e8c61e11179af17ab6188ad8d0ded78c5529441ed39d4bd9c1"
 dependencies = [
  "bitflags",
  "cfg-if",
@@ -329,9 +319,9 @@ checksum = "ff011a302c396a5197692431fc1948019154afc178baf7d8e37367442a4601cf"
 
 [[package]]
 name = "openssl-sys"
-version = "0.9.95"
+version = "0.9.103"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "40a4130519a360279579c2053038317e40eff64d13fd3f004f9e1b72b8a6aaf9"
+checksum = "7f9e8deee91df40a943c71b917e5874b951d32a802526c85721ce3b776c929d6"
 dependencies = [
  "cc",
  "libc",
@@ -341,9 +331,9 @@ dependencies = [
 
 [[package]]
 name = "pkg-config"
-version = "0.3.27"
+version = "0.3.30"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "26072860ba924cbfa98ea39c8c19b4dd6a4a25423dbdf219c1eca91aa0cf6964"
+checksum = "d231b230927b5e4ad203db57bbcbee2802f6bce620b1e4a9024a07d94e2907ec"
 
 [[package]]
 name = "powerfmt"
@@ -353,27 +343,27 @@ checksum = "439ee305def115ba05938db6eb1644ff94165c5ab5e9420d1c1bcedbba909391"
 
 [[package]]
 name = "proc-macro2"
-version = "1.0.69"
+version = "1.0.86"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "134c189feb4956b20f6f547d2cf727d4c0fe06722b20a0eec87ed445a97f92da"
+checksum = "5e719e8df665df0d1c8fbfd238015744736151d4445ec0836b8e628aae103b77"
 dependencies = [
  "unicode-ident",
 ]
 
 [[package]]
 name = "quote"
-version = "1.0.33"
+version = "1.0.37"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "5267fca4496028628a95160fc423a33e8b2e6af8a5302579e322e4b520293cae"
+checksum = "b5b9d34b8991d19d98081b46eacdd8eb58c6f2b201139f7c5f643cc155a633af"
 dependencies = [
  "proc-macro2",
 ]
 
 [[package]]
 name = "regex"
-version = "1.10.2"
+version = "1.10.6"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "380b951a9c5e80ddfd6136919eef32310721aa4aacd4889a8d39124b026ab343"
+checksum = "4219d74c6b67a3654a9fbebc4b419e22126d13d2f3c4a07ee0cb61ff79a79619"
 dependencies = [
  "aho-corasick",
  "memchr",
@@ -383,9 +373,9 @@ dependencies = [
 
 [[package]]
 name = "regex-automata"
-version = "0.4.3"
+version = "0.4.7"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "5f804c7828047e88b2d32e2d7fe5a105da8ee3264f01902f796c8e067dc2483f"
+checksum = "38caf58cc5ef2fed281f89292ef23f6365465ed9a41b7a7754eb4e26496c92df"
 dependencies = [
  "aho-corasick",
  "memchr",
@@ -394,52 +384,39 @@ dependencies = [
 
 [[package]]
 name = "regex-syntax"
-version = "0.8.2"
+version = "0.8.4"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "c08c74e62047bb2de4ff487b251e4a92e24f48745648451635cec7d591162d9f"
+checksum = "7a66a03ae7c801facd77a29370b4faec201768915ac14a721ba36f20bc9c209b"
-
-[[package]]
-name = "rustix"
-version = "0.38.21"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "2b426b0506e5d50a7d8dafcf2e81471400deb602392c7dd110815afb4eaf02a3"
-dependencies = [
- "bitflags",
- "errno",
- "libc",
- "linux-raw-sys",
- "windows-sys",
-]
 
 [[package]]
 name = "ryu"
-version = "1.0.15"
+version = "1.0.18"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "1ad4cc8da4ef723ed60bced201181d83791ad433213d8c24efffda1eec85d741"
+checksum = "f3cb5ba0dc43242ce17de99c180e96db90b235b8a9fdc9543c96d2209116bd9f"
 
 [[package]]
 name = "schannel"
-version = "0.1.22"
+version = "0.1.23"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "0c3733bf4cf7ea0880754e19cb5a462007c4a8c1914bff372ccc95b464f1df88"
+checksum = "fbc91545643bcf3a0bbb6569265615222618bdf33ce4ffbbd13c4bbd4c093534"
 dependencies = [
- "windows-sys",
+ "windows-sys 0.52.0",
 ]
 
 [[package]]
 name = "serde"
-version = "1.0.192"
+version = "1.0.209"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "bca2a08484b285dcb282d0f67b26cadc0df8b19f8c12502c13d966bf9482f001"
+checksum = "99fce0ffe7310761ca6bf9faf5115afbc19688edd00171d81b1bb1b116c63e09"
 dependencies = [
  "serde_derive",
 ]
 
 [[package]]
 name = "serde_derive"
-version = "1.0.192"
+version = "1.0.209"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "d6c7207fbec9faa48073f3e3074cbe553af6ea512d7c21ba46e434e70ea9fbc1"
+checksum = "a5831b979fd7b5439637af1752d535ff49f4860c0f341d1baeb6faf0f4242170"
 dependencies = [
  "proc-macro2",
  "quote",
@@ -448,30 +425,37 @@ dependencies = [
 
 [[package]]
 name = "serde_json"
-version = "1.0.108"
+version = "1.0.127"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "3d1c7e3eac408d115102c4c24ad393e0821bb3a5df4d506a80f85f7a742a526b"
+checksum = "8043c06d9f82bd7271361ed64f415fe5e12a77fdb52e573e7f06a516dea329ad"
 dependencies = [
  "itoa",
+ "memchr",
  "ryu",
  "serde",
 ]
 
 [[package]]
-name = "socket2"
+name = "shlex"
-version = "0.4.10"
+version = "1.3.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "9f7916fc008ca5542385b89a3d3ce689953c143e9304a9bf8beec1de48994c0d"
+checksum = "0fda2ff0d084019ba4d7c6f371c95d8fd75ce3524c3cb8fb653a3023f6323e64"
+
+[[package]]
+name = "socket2"
+version = "0.5.7"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "ce305eb0b4296696835b71df73eb912e0f1ffd2556a501fcede6e0c50349191c"
 dependencies = [
  "libc",
- "winapi",
+ "windows-sys 0.52.0",
 ]
 
 [[package]]
 name = "syn"
-version = "2.0.39"
+version = "2.0.77"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "23e78b90f2fcf45d3e842032ce32e3f2d1545ba6636271dcbf24fa306d87be7a"
+checksum = "9f35bcdf61fd8e7be6caf75f429fdca8beb3ed76584befb503b1569faee373ed"
 dependencies = [
  "proc-macro2",
  "quote",
@@ -494,21 +478,22 @@ dependencies = [
 
 [[package]]
 name = "termcolor"
-version = "1.3.0"
+version = "1.4.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "6093bad37da69aab9d123a8091e4be0aa4a03e4d601ec641c327398315f62b64"
+checksum = "06794f8f6c5c898b3275aebefa6b8a1cb24cd2c6c79397ab15774837a0bc5755"
 dependencies = [
  "winapi-util",
 ]
 
 [[package]]
 name = "time"
-version = "0.3.30"
+version = "0.3.36"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "c4a34ab300f2dee6e562c10a046fc05e358b29f9bf92277f30c3c8d82275f6f5"
+checksum = "5dfd88e563464686c916c7e46e623e520ddc6d79fa6641390f2e3fa86e83e885"
 dependencies = [
  "deranged",
  "itoa",
+ "num-conv",
  "powerfmt",
  "serde",
  "time-core",
@@ -523,10 +508,11 @@ checksum = "ef927ca75afb808a4d64dd374f00a2adf8d0fcff8e7b184af886c3c87ec4a3f3"
 
 [[package]]
 name = "time-macros"
-version = "0.2.15"
+version = "0.2.18"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "4ad70d68dba9e1f8aceda7aa6711965dfec1cac869f311a51bd08b3a2ccbce20"
+checksum = "3f252a68540fde3a3877aeea552b832b40ab9a69e318efd078774a01ddee1ccf"
 dependencies = [
+ "num-conv",
  "time-core",
 ]
 
@@ -548,55 +534,43 @@ version = "0.2.15"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "accd4ea62f7bb7a82fe23066fb0957d48ef677f6eeb8215f372f52e48bb32426"
 
-[[package]]
-name = "winapi"
-version = "0.3.9"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "5c839a674fcd7a98952e593242ea400abe93992746761e38641405d28b00f419"
-dependencies = [
- "winapi-i686-pc-windows-gnu",
- "winapi-x86_64-pc-windows-gnu",
-]
-
-[[package]]
-name = "winapi-i686-pc-windows-gnu"
-version = "0.4.0"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "ac3b87c63620426dd9b991e5ce0329eff545bccbbb34f3be09ff6fb6ab51b7b6"
-
 [[package]]
 name = "winapi-util"
-version = "0.1.6"
+version = "0.1.9"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "f29e6f9198ba0d26b4c9f07dbe6f9ed633e1f3d5b8b414090084349e46a52596"
+checksum = "cf221c93e13a30d793f7645a0e7762c55d169dbb0a49671918a2319d289b10bb"
 dependencies = [
- "winapi",
+ "windows-sys 0.59.0",
 ]
 
-[[package]]
-name = "winapi-x86_64-pc-windows-gnu"
-version = "0.4.0"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "712e227841d057c1ee1cd2fb22fa7e5a5461ae8e48fa2ca79ec42cfc1931183f"
-
 [[package]]
 name = "windows-sys"
-version = "0.48.0"
+version = "0.52.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "677d2418bec65e3338edb076e806bc1ec15693c5d0104683f2efe857f61056a9"
+checksum = "282be5f36a8ce781fad8c8ae18fa3f9beff57ec1b52cb3de0789201425d9a33d"
+dependencies = [
+ "windows-targets",
+]
+
+[[package]]
+name = "windows-sys"
+version = "0.59.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "1e38bc4d79ed67fd075bcc251a1c39b32a1776bbe92e5bef1f0bf1f8c531853b"
 dependencies = [
  "windows-targets",
 ]
 
 [[package]]
 name = "windows-targets"
-version = "0.48.5"
+version = "0.52.6"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "9a2fa6e2155d7247be68c096456083145c183cbbbc2764150dda45a87197940c"
+checksum = "9b724f72796e036ab90c1021d4780d4d3d648aca59e491e6b98e725b84e99973"
 dependencies = [
  "windows_aarch64_gnullvm",
  "windows_aarch64_msvc",
  "windows_i686_gnu",
+ "windows_i686_gnullvm",
  "windows_i686_msvc",
  "windows_x86_64_gnu",
  "windows_x86_64_gnullvm",
@@ -605,42 +579,48 @@ dependencies = [
 
 [[package]]
 name = "windows_aarch64_gnullvm"
-version = "0.48.5"
+version = "0.52.6"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "2b38e32f0abccf9987a4e3079dfb67dcd799fb61361e53e2882c3cbaf0d905d8"
+checksum = "32a4622180e7a0ec044bb555404c800bc9fd9ec262ec147edd5989ccd0c02cd3"
 
 [[package]]
 name = "windows_aarch64_msvc"
-version = "0.48.5"
+version = "0.52.6"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "dc35310971f3b2dbbf3f0690a219f40e2d9afcf64f9ab7cc1be722937c26b4bc"
+checksum = "09ec2a7bb152e2252b53fa7803150007879548bc709c039df7627cabbd05d469"
 
 [[package]]
 name = "windows_i686_gnu"
-version = "0.48.5"
+version = "0.52.6"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "a75915e7def60c94dcef72200b9a8e58e5091744960da64ec734a6c6e9b3743e"
+checksum = "8e9b5ad5ab802e97eb8e295ac6720e509ee4c243f69d781394014ebfe8bbfa0b"
+
+[[package]]
+name = "windows_i686_gnullvm"
+version = "0.52.6"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "0eee52d38c090b3caa76c563b86c3a4bd71ef1a819287c19d586d7334ae8ed66"
 
 [[package]]
 name = "windows_i686_msvc"
-version = "0.48.5"
+version = "0.52.6"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "8f55c233f70c4b27f66c523580f78f1004e8b5a8b659e05a4eb49d4166cca406"
+checksum = "240948bc05c5e7c6dabba28bf89d89ffce3e303022809e73deaefe4f6ec56c66"
 
 [[package]]
 name = "windows_x86_64_gnu"
-version = "0.48.5"
+version = "0.52.6"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "53d40abd2583d23e4718fddf1ebec84dbff8381c07cae67ff7768bbf19c6718e"
+checksum = "147a5c80aabfbf0c7d901cb5895d1de30ef2907eb21fbbab29ca94c5b08b1a78"
 
 [[package]]
 name = "windows_x86_64_gnullvm"
-version = "0.48.5"
+version = "0.52.6"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "0b7b52767868a23d5bab768e390dc5f5c55825b6d30b86c844ff2dc7414044cc"
+checksum = "24d5b23dc417412679681396f2b49f3de8c1473deb516bd34410872eff51ed0d"
 
 [[package]]
 name = "windows_x86_64_msvc"
-version = "0.48.5"
+version = "0.52.6"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "ed94fce61571a4006852b7389a063ab983c02eb1bb37b47f8272ce92d06d9538"
+checksum = "589f6da84c646204747d1270a2a5661ea66ed1cced2631d546fdfb155959f9ec"

ops/keycloak/main.tf

@@ -10,20 +10,29 @@ terraform {
   }
 
   backend "s3" {
-    endpoint = "https://objects.dc-sto1.glesys.net"
+    endpoints = {
-    bucket   = "tvl-state"
+      s3 = "https://objects.dc-sto1.glesys.net"
-    key      = "terraform/tvl-keycloak"
+    }
-    region   = "glesys"
+    bucket = "tvl-state"
+    key    = "terraform/tvl-keycloak"
+    region = "glesys"
 
     skip_credentials_validation = true
     skip_region_validation      = true
     skip_metadata_api_check     = true
+    skip_requesting_account_id  = true
+    skip_s3_checksum            = true
   }
 }
 
 provider "keycloak" {
   client_id = "terraform"
   url       = "https://auth.tvl.fyi"
+  # NOTE: Docs mention this applies to "users of the legacy distribution of keycloak".
+  # However, we get a "failed to perform initial login to Keycloak: error
+  # sending POST request to https://auth.tvl.fyi/realms/master/protocol/openid-connect/token: 404 Not Found"
+  # if we don't set this.
+  base_path = "/auth"
 }
 
 resource "keycloak_realm" "tvl" {

ops/keycloak/user_sources.tf

@@ -22,6 +22,13 @@ resource "keycloak_ldap_user_federation" "tvl_ldap" {
     "inetOrgPerson",
     "organizationalPerson",
   ]
+
+  lifecycle {
+    # Without this, terraform wants to recreate the resource.
+    ignore_changes = [
+      delete_default_mappers
+    ]
+  }
 }
 
 # keycloak_oidc_identity_provider.github will be destroyed
@@ -29,7 +36,7 @@ resource "keycloak_ldap_user_federation" "tvl_ldap" {
 resource "keycloak_oidc_identity_provider" "github" {
   alias                 = "github"
   provider_id           = "github"
-  client_id             = "6d7f8bb2e82bb6739556"
+  client_id             = "Iv23liXfGNIr7InMg5Uo"
   client_secret         = var.github_client_secret
   realm                 = keycloak_realm.tvl.id
   backchannel_supported = false

ops/kontemplate/util/util.go

@@ -29,13 +29,29 @@ func Merge(in1 *map[string]interface{}, in2 *map[string]interface{}) *map[string
 		return in1
 	}
 
+	// The maps are map[string]interface{} with unknown depth.
+	// Loop over both maps into every level and merge them.
 	new := make(map[string]interface{})
+
 	for k, v := range *in1 {
 		new[k] = v
 	}
 
 	for k, v := range *in2 {
-		new[k] = v
+		if existing, ok := new[k]; ok {
+			// If both values are maps, merge them recursively
+			if existingMap, ok := existing.(map[string]interface{}); ok {
+				if newMap, ok := v.(map[string]interface{}); ok {
+					new[k] = *Merge(&existingMap, &newMap)
+				} else {
+					new[k] = v
+				}
+			} else {
+				new[k] = v
+			}
+		} else {
+			new[k] = v
+		}
 	}
 
 	return &new

ops/kontemplate/util/util_test.go

@@ -47,6 +47,9 @@ func TestMergeWithNilMap(t *testing.T) {
 func TestMergeMaps(t *testing.T) {
 	map1 := map[string]interface{}{
 		"foo": "bar",
+		"baz": map[string]interface{}{
+			"qux": "quux",
+		},
 	}
 
 	map2 := map[string]interface{}{
@@ -56,6 +59,9 @@ func TestMergeMaps(t *testing.T) {
 	result := Merge(&map1, &map2)
 	expected := map[string]interface{}{
 		"foo": "bar",
+		"baz": map[string]interface{}{
+			"qux": "quux",
+		},
 		"bar": "baz",
 	}
 

ops/machines/all-systems.nix

@@ -3,6 +3,8 @@
 (with depot.ops.machines; [
   sanduny
   whitby
+  nixery-01
+  volgasprint-cache
 ]) ++
 
 (with depot.users.tazjin.nixos; [

ops/machines/volgasprint-cache/default.nix

@@ -0,0 +1,153 @@
+# temporary machine for local binary cache proxy during VolgaSprint
+
+{ depot, lib, pkgs, ... }: # readTree options
+{ config, ... }: # passed by module system
+
+let
+  mod = name: depot.path.origSrc + ("/ops/modules/" + name);
+in
+{
+  imports = [
+    (mod "tvl-users.nix")
+  ];
+
+  boot = {
+    kernelPackages = pkgs.linuxKernel.packages.linux_rpi4;
+    initrd.availableKernelModules = [ "xhci_pci" "usbhid" "usb_storage" ];
+    loader = {
+      grub.enable = false;
+      generic-extlinux-compatible.enable = true;
+    };
+  };
+
+  depot.auto-deploy = {
+    enable = true;
+    interval = "hourly";
+  };
+
+  fileSystems = {
+    "/" = {
+      device = "/dev/disk/by-label/NIXOS_SD";
+      fsType = "ext4";
+      options = [ "noatime" ];
+    };
+    "/var/public-nix-cache" = {
+      device = "/dev/sda1";
+      fsType = "ext4";
+    };
+  };
+
+  networking = {
+    firewall = {
+      enable = true;
+      allowedTCPPorts = [ 80 443 8098 ];
+    };
+
+    hostName = "volgacache";
+    domain = "volgasprint.org";
+
+    wireless = {
+      enable = true;
+      networks.VolgaSprint.psk = "nixos-unstable";
+      interfaces = [ "wlan0" ];
+    };
+
+    wg-quick.interfaces = {
+      wg0 = {
+        address = [ "10.10.10.2/24" "fd42::1/128" ];
+        dns = [ "1.1.1.1" ];
+        privateKeyFile = "/etc/wireguard_private_key";
+
+        peers = [
+          {
+            publicKey = "2MZzEGJzA3HrwkHf91TaKJEHwCNyVvsTLWoIYHrCxhY=";
+            presharedKeyFile = "/etc/wireguard_preshared_key";
+            allowedIPs = [ "0.0.0.0/0" "::/0" ];
+            endpoint = "195.201.63.240:8098";
+            persistentKeepalive = 15;
+          }
+        ];
+      };
+    };
+  };
+
+  services.openssh.enable = true;
+
+  services.nginx = {
+    enable = true;
+    recommendedGzipSettings = true;
+    recommendedOptimisation = true;
+
+    appendHttpConfig = ''
+      proxy_cache_path /tmp/pkgcache levels=1:2 keys_zone=cachecache:100m max_size=20g inactive=365d use_temp_path=off;
+
+      # Cache only success status codes; in particular we don't want to cache 404s.
+      # See https://serverfault.com/a/690258/128321
+      map $status $cache_header {
+      200     "public";
+      302     "public";
+      default "no-cache";
+      }
+      access_log /var/log/nginx/access.log;
+    '';
+
+    virtualHosts."cache.volgasprint.org" = {
+      sslCertificate = "/etc/ssl/cache.volgasprint.org/key.pem";
+      sslCertificateKey = "/etc/ssl/cache.volgasprint.org/key.pem";
+      sslTrustedCertificate = "/etc/ssl/cache.volgasprint.org/chain.pem";
+
+      locations."/" = {
+        root = "/var/public-nix-cache";
+        extraConfig = ''
+          expires max;
+          add_header Cache-Control $cache_header always;
+          # Ask the upstream server if a file isn't available locally
+          error_page 404 = @fallback;
+        '';
+      };
+
+      extraConfig = ''
+        # Using a variable for the upstream endpoint to ensure that it is
+        # resolved at runtime as opposed to once when the config file is loaded
+        # and then cached forever (we don't want that):
+        # see https://tenzer.dk/nginx-with-dynamic-upstreams/
+        # This fixes errors like
+        #   nginx: [emerg] host not found in upstream "upstream.example.com"
+        # when the upstream host is not reachable for a short time when
+        # nginx is started.
+        resolver 80.67.169.12; # fdn dns
+        set $upstream_endpoint http://cache.nixos.org;
+      '';
+
+      locations."@fallback" = {
+        proxyPass = "$upstream_endpoint";
+        extraConfig = ''
+          proxy_cache cachecache;
+          proxy_cache_valid  200 302  60d;
+          expires max;
+          add_header Cache-Control $cache_header always;
+        '';
+      };
+
+      # We always want to copy cache.nixos.org's nix-cache-info file,
+      # and ignore our own, because `nix-push` by default generates one
+      # without `Priority` field, and thus that file by default has priority
+      # 50 (compared to cache.nixos.org's `Priority: 40`), which will make
+      # download clients prefer `cache.nixos.org` over our binary cache.
+      locations."= /nix-cache-info" = {
+        # Note: This is duplicated with the `@fallback` above,
+        # would be nicer if we could redirect to the @fallback instead.
+        proxyPass = "$upstream_endpoint";
+        extraConfig = ''
+          proxy_cache cachecache;
+          proxy_cache_valid  200 302  60d;
+          expires max;
+          add_header Cache-Control $cache_header always;
+        '';
+      };
+    };
+  };
+
+  hardware.enableRedistributableFirmware = true;
+  system.stateVersion = "23.11";
+}

ops/machines/whitby/default.nix

@@ -11,6 +11,7 @@ in
   imports = [
     (mod "atward.nix")
     (mod "cgit.nix")
+    (mod "cheddar.nix")
     (mod "clbot.nix")
     (mod "gerrit-autosubmit.nix")
     (mod "irccat.nix")
@@ -24,7 +25,6 @@ in
     (mod "paroxysm.nix")
     (mod "restic.nix")
     (mod "smtprelay.nix")
-    (mod "sourcegraph.nix")
     (mod "teleirc.nix")
     (mod "tvl-buildkite.nix")
     (mod "tvl-slapd/default.nix")
@@ -306,6 +306,9 @@ in
     agentCount = 32;
   };
 
+  # Run Markdown/code renderer
+  services.depot.cheddar.enable = true;
+
   # Start a local SMTP relay to Gmail (used by gerrit)
   services.depot.smtprelay = {
     enable = true;
@@ -374,9 +377,6 @@ in
   };
 
   services.depot = {
-    # Run a SourceGraph code search instance
-    sourcegraph.enable = true;
-
     # Run a livegrep code search instance
     livegrep.enable = true;
 

ops/modules/cheddar.nix

@@ -0,0 +1,29 @@
+{ depot, config, pkgs, lib, ... }:
+
+let
+  cfg = config.services.depot.cheddar;
+  description = "cheddar - markdown/highlighting server";
+in
+{
+  options.services.depot.cheddar = with lib; {
+    enable = mkEnableOption description;
+    port = mkOption {
+      description = "Port on which cheddar should listen";
+      type = types.int;
+      default = 4238;
+    };
+  };
+
+  config = lib.mkIf cfg.enable {
+    systemd.services.cheddar-server = {
+      inherit description;
+      wantedBy = [ "multi-user.target" ];
+      script = "${depot.tools.cheddar}/bin/cheddar --listen 0.0.0.0:${toString cfg.port} --sourcegraph-server";
+
+      serviceConfig = {
+        DynamicUser = true;
+        Restart = "always";
+      };
+    };
+  };
+}

ops/modules/sourcegraph.nix

@@ -1,60 +0,0 @@
-# Run sourcegraph, including its entire machinery, in a container.
-# Running it outside of a container is a futile endeavour for now.
-{ depot, config, pkgs, lib, ... }:
-
-let
-  cfg = config.services.depot.sourcegraph;
-in
-{
-  options.services.depot.sourcegraph = with lib; {
-    enable = mkEnableOption "SourceGraph code search engine";
-
-    port = mkOption {
-      description = "Port on which SourceGraph should listen";
-      type = types.int;
-      default = 3463;
-    };
-
-    cheddarPort = mkOption {
-      description = "Port on which cheddar should listen";
-      type = types.int;
-      default = 4238;
-    };
-  };
-
-  config = lib.mkIf cfg.enable {
-    # Run a cheddar syntax highlighting server
-    systemd.services.cheddar-server = {
-      wantedBy = [ "multi-user.target" ];
-      script = "${depot.tools.cheddar}/bin/cheddar --listen 0.0.0.0:${toString cfg.cheddarPort} --sourcegraph-server";
-
-      serviceConfig = {
-        DynamicUser = true;
-        Restart = "always";
-      };
-    };
-
-    virtualisation.oci-containers.containers.sourcegraph = {
-      image = "sourcegraph/server:3.40.0";
-
-      ports = [
-        "127.0.0.1:${toString cfg.port}:7080"
-      ];
-
-      volumes = [
-        "/var/lib/sourcegraph/etc:/etc/sourcegraph"
-        "/var/lib/sourcegraph/data:/var/opt/sourcegraph"
-      ];
-
-      # TODO(tazjin): Figure out what changed in the protocol.
-      # environment.SRC_SYNTECT_SERVER = "http://172.17.0.1:${toString cfg.cheddarPort}";
-
-      # Sourcegraph needs a higher nofile limit, it logs warnings
-      # otherwise (unclear whether it actually affects the service).
-      extraOptions = [
-        "--ulimit"
-        "nofile=10000:10000"
-      ];
-    };
-  };
-}

ops/modules/www/cs.tvl.fyi.nix

@@ -1,3 +1,5 @@
+# This configuration redirects from the previous Sourcegraph instance to
+# livegrep/cgit where appropriate.
 { config, ... }:
 
 {
@@ -13,17 +15,50 @@
       forceSSL = true;
 
       extraConfig = ''
-        location = / {
+        set $lineno "";
-          return 301 https://cs.tvl.fyi/depot;
+
+        # depot root
+        location = /depot {
+            return 301 https://code.tvl.fyi/tree/;
+        }
+
+        # folder/file on canon
+        location ~ ^/depot/-/(blob|tree)/([^\s]*)$ {
+            set $path $2;
+            if ($args ~ ^L(\d+)(-\d+)?$) {
+                set $lineno "#n$1";
+            }
+
+            return 302 https://code.tvl.fyi/tree/$path$lineno;
+        }
+
+        # folder/file on specific commit
+        location ~ ^/depot@([a-f0-9]+)/-/(blob|tree)/([^\s]*)$ {
+            set $commit $1;
+            set $path $3;
+
+            if ($args ~ ^L(\d+)(-\d+)?$) {
+                set $lineno "#n$1";
+            }
+
+            return 302 https://code.tvl.fyi/tree/$path?id=$commit$lineno;
+        }
+
+        # commit info
+        location ~ ^/depot/-/commit/([a-f0-9]+)$ {
+            set $commit $1;
+            return 302 https://code.tvl.fyi/commit/?id=$commit;
+        }
+
+        # search handler
+        # This only redirects to the new search, it doesn't try to parse and
+        # rewrite the query.
+        location /search {
+            return 302 https://grep.tvl.fyi/search;
         }
 
         location / {
-          proxy_set_header X-Sg-Auth "Anonymous";
+            return 404 "TVL code search has moved to grep.tvl.fyi and we could not figure out how to rewrite your query. Sorry!";
-          proxy_pass http://localhost:${toString config.services.depot.sourcegraph.port};
-        }
-
-        location /users/Anonymous/settings {
-          return 301 https://cs.tvl.fyi;
         }
       '';
     };

ops/modules/www/tazj.in.nix

@@ -1,54 +0,0 @@
-# serve tazjin's website & blog
-{ depot, config, lib, pkgs, ... }:
-
-{
-  imports = [
-    ./base.nix
-  ];
-
-  config = {
-    services.nginx.virtualHosts."tazj.in" = {
-      enableACME = true;
-      forceSSL = true;
-      root = depot.users.tazjin.homepage;
-      serverAliases = [ "www.tazj.in" ];
-
-      extraConfig = ''
-        location = /en/rss.xml {
-          return 301 https://tazj.in/feed.atom;
-        }
-
-        ${depot.users.tazjin.blog.oldRedirects}
-        location /blog/ {
-          alias ${depot.users.tazjin.blog.rendered}/;
-
-          if ($request_uri ~ ^/(.*)\.html$) {
-            return 302 /$1;
-          }
-
-          try_files $uri $uri.html $uri/ =404;
-        }
-
-        location = /predlozhnik {
-          return 302 https://predlozhnik.ru;
-        }
-
-        # redirect for easier entry on a TV
-        location = /tv {
-          return 302 https://tazj.in/blobs/play.html;
-        }
-
-        # Temporary place for serving static files.
-        location /blobs/ {
-          alias /var/lib/tazjins-blobs/;
-        }
-      '';
-    };
-
-    services.nginx.virtualHosts."git.tazj.in" = {
-      enableACME = true;
-      forceSSL = true;
-      extraConfig = "return 301 https://code.tvl.fyi$request_uri;";
-    };
-  };
-}

ops/nixos.nix

@@ -63,5 +63,6 @@ in rec {
   whitbySystem = (nixosFor depot.ops.machines.whitby).system;
   sandunySystem = (nixosFor depot.ops.machines.sanduny).system;
   nixeryDev01System = (nixosFor depot.ops.machines.nixery-01).system;
+  volgaSprintCacheSystem = (nixosFor depot.ops.machines.volgasprint-cache).system;
   meta.ci.targets = [ "sandunySystem" "whitbySystem" "nixeryDev01System" ];
 }

ops/pipelines/static-pipeline.yaml

@@ -88,10 +88,12 @@ steps:
     continue_on_failure: true
 
   # Exit with success or failure depending on whether any other steps
-  # failed.
+  # failed (but not retried).
   #
   # This information is checked by querying the Buildkite GraphQL API
-  # and fetching the count of failed steps.
+  # and fetching all failed steps, then filtering out the ones that were
+  # retried (retried jobs create new jobs, which would also show up in the
+  # query).
   #
   # This step must be :duck: (yes, really!) because the post-command
   # hook will inspect this name.
@@ -109,8 +111,8 @@ steps:
       readonly FAILED_JOBS=$(curl 'https://graphql.buildkite.com/v1' \
         --silent \
         -H "Authorization: Bearer $(cat ${BUILDKITE_TOKEN_PATH})" \
-        -d "{\"query\": \"query BuildStatusQuery { build(uuid: \\\"$BUILDKITE_BUILD_ID\\\") { jobs(passed: false) { count } } }\"}" | \
+        -d "{\"query\": \"query BuildStatusQuery { build(uuid: \\\"$BUILDKITE_BUILD_ID\\\") { jobs(passed: false, first: 500 ) { edges { node { ... on JobTypeCommand { retried } } } } } }\"}" | \
-        jq -r '.data.build.jobs.count')
+        jq -r '.data.build.jobs.edges | map(select(.node.retried == false)) | length')
 
       echo "$$FAILED_JOBS build jobs failed."
 

ops/users/default.nix

@@ -21,6 +21,11 @@
     email = "root@gws.fyi";
     password = "{ARGON2}$argon2id$v=19$m=65536,t=2,p=1$5NEYPJ19nDITK5sGr4bzhQ$Xzpzth6y4w+HGvioHiYgzqFiwMDx0B7HAh+PVbkRuuk";
   }
+  {
+    username = "azahi";
+    email = "azat@bahawi.net";
+    password = "{ARGON2}$argon2id$v=19$m=19456,t=2,p=1$BVRzgfs8YIorOTq62B00CQ$5UXHyG/Ivn5TqB7UNgfjYJMxTjun3NDvAStWFom4oas";
+  }
   {
     username = "chickadee";
     email = "matthewktromp@gmail.com";
@@ -36,11 +41,21 @@
     email = "me@cynthia.re";
     password = "{ARGON2}$argon2id$v=19$m=65536,t=4,p=1$TxjbMGenhEmkyYLrg5uGhbr60THB86YeRZg5bPdiTJo$k9gbRlAPjmxwdUwzbavvsAVkckgQZ0jS2oTtvZBPysk";
   }
+  {
+    username = "domenkozar";
+    email = "domen@cachix.org";
+    password = "{ARGON2}$argon2id$v=19$m=19456,t=2,p=1$c9WgMrTqPJZenOr5+wlnnQ$XOpRZRTkduzP2+NJBxkg2jhffurg7PDla4/RoAyclwI";
+  }
   {
     username = "edef";
     email = "edef@edef.eu";
     password = "{ARGON2}$argon2id$v=19$m=65536,t=2,p=1$OORx4ERbkgvTmuYCJA8cIw$i5qaBzHkRVw7Tl+wZsTFTDqJwF0vuZqhW3VpknMYMc0";
   }
+  {
+    username = "elle";
+    email = "lnajt4@gmail.com";
+    password = "{ARGON2}$argon2id$v=19$m=19456,t=2,p=1$b5Bfq6u+fEKbtpixOl+yPw$nCyTLbSDYsw30ZiSxhJ6N99IIPQAnS2XRNlpEx9os+0";
+  }
   {
     username = "ericvolp12";
     email = "ericvolp12@gmail.com";
@@ -111,6 +126,11 @@
     email = "lukegb@tvl.fyi";
     password = "{SSHA}7a85VNhpFElFw+N5xcjgGmt4HnBsaGp4";
   }
+  {
+    username = "mrflos";
+    email = "mrflos@yeswiki.pro";
+    password = "{ARGON2}$argon2id$v=19$m=19456,t=2,p=1$/D1y+6n3+0GigG9mCMqK8A$9PseWm3+QATxN/M3Wu4JM+CnIppLD/LbQaVEKLItv9o";
+  }
   {
     username = "noteed";
     email = "noteed@gmail.com";
@@ -153,6 +173,11 @@
     email = "tazjin@tvl.su";
     password = "{ARGON2}$argon2id$v=19$m=65536,t=2,p=1$wOPEl9D3kSke//oLtbvqrg$j0npwwXgaXQ/emefKUwL59tH8hdmtzbgH2rQzWSmE2Y";
   }
+  {
+    username = "yl3dy";
+    email = "aleksandr.kiselyov@gmail.com";
+    password = "{ARGON2}$argon2id$v=19$m=19456,t=2,p=1$vPvOa0/7RzDLuD/icQuIzQ$IVMSI7hh/frihuL11sNRj6Jz8TTn1wZZHjZZGszz3pI";
+  }
   {
     username = "implr";
     email = "implr@hackerspace.pl";
@@ -259,4 +284,24 @@
     email = "tvix@sinavir.fr";
     password = "{ARGON2}$argon2id$v=19$m=19456,t=2,p=1$5GXvoN/enVljV97yE/Zasg$OrgY9/ge2LoxNm9OOqxh/kKLxoAvU54MbQa9WWiT0jY";
   }
+  {
+    username = "emery";
+    email = "emery@dmz.rs";
+    password = "{ARGON2}$argon2id$v=19$m=19456,t=2,p=1$b2k5UpTJafqM7yjHfVRjBg$zFGy/ZeI9Hb71TUfJwFp7qDKyUl8tdyFDUK1uNBYfUI";
+  }
+  {
+    username = "aziz";
+    email = "abd.aziz89@gmail.com";
+    password = "{ARGON2}$argon2id$v=19$m=19456,t=2,p=1$xTvdtTF+gavMfF8556CiiQ$IshnauhlEr80skpv5s6ueJLkQxlynzBt6oCp3cQrNCY";
+  }
+  {
+    username = "nikiv";
+    email = "nikita@nikiv.dev";
+    password = "{ARGON2}$argon2id$v=19$m=19456,t=2,p=1$79mMAD2XYa5dg7D9ueWMpw$Edf5WODrFpkNDyWaMdLKcgcErFLx4khmPIk8wzmYGUE";
+  }
+  {
+    username = "ein-shved";
+    email = "mestofel13@gmail.com";
+    password = "{ARGON2}$argon2id$v=19$m=19456,t=2,p=1$D4wzfJoyFye48QNdrC66VA$aBJ/ZaL+rTgXoQa/nFdpHap3G/Oju8WlHaWTii95X8E";
+  }
 ]

third_party/chicago95/default.nix

@@ -0,0 +1,47 @@
+# A rendition of everyone's favourite computer theme.
+{ pkgs, ... }:
+
+let
+  # Chicago95 has no GTK-4 theme (because GTK-4 removed important features that
+  # it needs), but there is a project with an approximation.
+  #
+  # This is a bit of a hack, but I inject that project's GTK-4 theme as if it
+  # was a part of Chicago95.
+  #
+  # This other project is GPL-3.0, under which Chicago95 is also distributed.
+  gtk4ProjectSrc = pkgs.fetchFromGitHub {
+    owner = "B00merang-Project";
+    repo = "Windows-95";
+    rev = "055abd7a3608afdcb2ef021732e07020f2b416b2";
+    hash = "sha256:1li6wzyn3y09d188xki1h96pmn4xcx2lklfc4rkiq2y2r22wx7kz";
+  };
+in
+pkgs.stdenvNoCC.mkDerivation {
+  pname = "Chicago95";
+  version = "master";
+
+  src = pkgs.fetchFromGitHub {
+    owner = "grassmunk";
+    repo = "Chicago95";
+    rev = "bdf5cf36a16102aaac297f3de887c601c2b1146f";
+    hash = "sha256:11fsy3bam1rhp1292zflvzmf1432z1p0ncwy3601wl2f8rnvfdfm";
+  };
+
+  # The project has a Makefile, but it's broken in all sorts of ways, so we just
+  # copy the important stuff manually.
+  dontBuild = true;
+  installPhase = ''
+    mkdir -p $out/share/{icons,fonts,themes,sounds,qt5ct/colors}
+
+    cp -r Theme/Chicago95 $out/share/themes
+    cp -r Icons/* $out/share/icons
+    cp -r Cursors/* $out/share/icons
+    cp -r Fonts/* $out/share/fonts
+    cp Extras/Chicago95_qt.conf $out/share/qt5ct/colors
+
+    cp -r ${gtk4ProjectSrc}/gtk-4.0 $out/share/themes/Chicago95
+  '';
+
+  meta.license = pkgs.lib.licenses.gpl3;
+}
+

third_party/gerrit_plugins/builder.nix

@@ -4,7 +4,7 @@
     { name
     , version
     , src
-    , depsHash ? null 
+    , depsHash ? null
     , overlayPluginCmd ? ''
         cp -R "${src}" "$out/plugins/${name}"
         echo "STABLE_BUILD_${lib.toUpper name}_LABEL v${version}-nix${if patches != [] then "-dirty" else ""}" >> $out/.version

third_party/gitignoreSource/default.nix

@@ -1,15 +1,7 @@
-{ pkgs, ... }:
+{ depot, lib, ... }:
 
 let
-  gitignoreNix = import
+  gitignoreNix = import depot.third_party.sources."gitignore.nix" { inherit lib; };
-    (pkgs.fetchFromGitHub {
-      owner = "hercules-ci";
-      repo = "gitignore";
-      rev = "f9e996052b5af4032fe6150bba4a6fe4f7b9d698";
-      sha256 = "0jrh5ghisaqdd0vldbywags20m2cxpkbbk5jjjmwaw0gr8nhsafv";
-    })
-    { inherit (pkgs) lib; };
-
 in
 {
   __functor = _: gitignoreNix.gitignoreSource;

third_party/nixpkgs/default.nix

@@ -58,6 +58,9 @@ let
 
     # the big lis package change breaks everything in //3p/lisp, undo it for now.
     lispPackages = stableNixpkgs.lispPackages;
+
+    # mypaint is broken on stable (2024-09-05)
+    mypaint = stableNixpkgs.mypaint;
   };
 
   # Overlay to expose the nixpkgs commits we are using to other Nix code.

third_party/overlays/patches/cbtemulator-uds.patch

@@ -1,140 +0,0 @@
-commit 1397e10225d8c6fd079a86fccd58fb5d0f4200bc
-Author: Florian Klink <flokli@flokli.de>
-Date:   Fri Mar 29 10:06:34 2024 +0100
-
-    feat(bigtable/emulator): allow listening on Unix Domain Sockets
-    
-    cbtemulator listening on unix domain sockets is much easier than trying
-    to allocate free TCP ports, especially if many cbtemulators are run at
-    the same time in integration tests.
-    
-    This adds an additional flag, address, which has priority if it's set,
-    rather than host:port.
-    
-    `NewServer` already takes a `laddr string`, so we simply check for it to
-    contain slashes, and if so, listen on unix, rather than TCP.
-
-diff --git a/bigtable/bttest/inmem.go b/bigtable/bttest/inmem.go
-index 556abc2a85..33e4bf2667 100644
---- a/bttest/inmem.go
-+++ b/bttest/inmem.go
-@@ -40,6 +40,7 @@ import (
- 	"math"
- 	"math/rand"
- 	"net"
-+	"os"
- 	"regexp"
- 	"sort"
- 	"strings"
-@@ -106,7 +107,15 @@ type server struct {
- // The Server will be listening for gRPC connections, without TLS,
- // on the provided address. The resolved address is named by the Addr field.
- func NewServer(laddr string, opt ...grpc.ServerOption) (*Server, error) {
--	l, err := net.Listen("tcp", laddr)
-+	var l net.Listener
-+	var err error
-+
-+	// If the address contains slashes, listen on a unix domain socket instead.
-+	if strings.Contains(laddr, "/") {
-+		l, err = net.Listen("unix", laddr)
-+	} else {
-+		l, err = net.Listen("tcp", laddr)
-+	}
- 	if err != nil {
- 		return nil, err
- 	}
-diff --git a/bigtable/cmd/emulator/cbtemulator.go b/bigtable/cmd/emulator/cbtemulator.go
-index 144c09ffb1..deaf69b717 100644
---- a/cmd/emulator/cbtemulator.go
-+++ b/cmd/emulator/cbtemulator.go
-@@ -27,8 +27,9 @@ import (
- )
- 
- var (
--	host = flag.String("host", "localhost", "the address to bind to on the local machine")
--	port = flag.Int("port", 9000, "the port number to bind to on the local machine")
-+	host    = flag.String("host", "localhost", "the address to bind to on the local machine")
-+	port    = flag.Int("port", 9000, "the port number to bind to on the local machine")
-+	address = flag.String("address", "", "address:port number or unix socket path to listen on. Has priority over host/port")
- )
- 
- const (
-@@ -42,7 +43,15 @@ func main() {
- 		grpc.MaxRecvMsgSize(maxMsgSize),
- 		grpc.MaxSendMsgSize(maxMsgSize),
- 	}
--	srv, err := bttest.NewServer(fmt.Sprintf("%s:%d", *host, *port), opts...)
-+
-+	var laddr string
-+	if *address != "" {
-+		laddr = *address
-+	} else {
-+		laddr = fmt.Sprintf("%s:%d", *host, *port)
-+	}
-+
-+	srv, err := bttest.NewServer(laddr, opts...)
- 	if err != nil {
- 		log.Fatalf("failed to start emulator: %v", err)
- 	}
-commit ce16f843d6c93159d86b3807c6d9ff66e43aac67
-Author: Florian Klink <flokli@flokli.de>
-Date:   Fri Mar 29 11:53:15 2024 +0100
-
-    feat(bigtable): clean up unix socket on close
-    
-    Call srv.Close when receiving an interrupt, and delete the unix domain
-    socket in that function.
-
-diff --git a/bigtable/bttest/inmem.go b/bigtable/bttest/inmem.go
-index 33e4bf2667..0dc96024b1 100644
---- a/bttest/inmem.go
-+++ b/bttest/inmem.go
-@@ -148,6 +148,11 @@ func (s *Server) Close() {
- 
- 	s.srv.Stop()
- 	s.l.Close()
-+
-+	// clean up unix socket
-+	if strings.Contains(s.Addr, "/") {
-+		_ = os.Remove(s.Addr)
-+	}
- }
- 
- func (s *server) CreateTable(ctx context.Context, req *btapb.CreateTableRequest) (*btapb.Table, error) {
-diff --git a/bigtable/cmd/emulator/cbtemulator.go b/bigtable/cmd/emulator/cbtemulator.go
-index deaf69b717..5a9e8f7a8c 100644
---- a/cmd/emulator/cbtemulator.go
-+++ b/cmd/emulator/cbtemulator.go
-@@ -18,9 +18,12 @@ cbtemulator launches the in-memory Cloud Bigtable server on the given address.
- package main
- 
- import (
-+	"context"
- 	"flag"
- 	"fmt"
- 	"log"
-+	"os"
-+	"os/signal"
- 
- 	"cloud.google.com/go/bigtable/bttest"
- 	"google.golang.org/grpc"
-@@ -51,11 +54,18 @@ func main() {
- 		laddr = fmt.Sprintf("%s:%d", *host, *port)
- 	}
- 
-+	ctx, stop := signal.NotifyContext(context.Background(), os.Interrupt)
-+	defer stop()
-+
- 	srv, err := bttest.NewServer(laddr, opts...)
- 	if err != nil {
- 		log.Fatalf("failed to start emulator: %v", err)
- 	}
- 
- 	fmt.Printf("Cloud Bigtable emulator running on %s\n", srv.Addr)
--	select {}
-+	select {
-+	case <-ctx.Done():
-+		srv.Close()
-+		stop()
-+	}
- }

third_party/overlays/patches/crate2nix-0001-Fix-Use-mkDerivation-with-src-instead-of-runCommand.patch

@@ -0,0 +1,109 @@
+From 96f66ec32e003c6c215aa2a644281289a71dae7d Mon Sep 17 00:00:00 2001
+From: Ilan Joselevich <personal@ilanjoselevich.com>
+Date: Sun, 4 Aug 2024 02:35:27 +0300
+Subject: [PATCH] Fix: Use mkDerivation with src instead of runCommand for test
+ derivation
+
+The problem with using runCommand and recreating the src directory with
+lndir is that it changes the file types of individual files, they will
+now be a symlink instead of a regular file. If you have a crate that tests
+that a file is of regular type then it will fail inside the crate2nix derivation.
+---
+ templates/nix/crate2nix/default.nix | 81 ++++++++-----------
+ 1 file changed, 35 insertions(+), 46 deletions(-)
+
+diff --git a/templates/nix/crate2nix/default.nix b/templates/nix/crate2nix/default.nix
+index c53925e..90e10c6 100644
+--- a/templates/nix/crate2nix/default.nix
++++ b/templates/nix/crate2nix/default.nix
+@@ -120,52 +120,41 @@ rec {
+               testPostRun
+             ]);
+         in
+-        pkgs.runCommand "run-tests-${testCrate.name}"
+-          {
+-            inherit testCrateFlags;
+-            buildInputs = testInputs;
+-          } ''
+-          set -e
+-
+-          export RUST_BACKTRACE=1
+-
+-          # recreate a file hierarchy as when running tests with cargo
+-
+-          # the source for test data
+-          # It's necessary to locate the source in $NIX_BUILD_TOP/source/
+-          # instead of $NIX_BUILD_TOP/
+-          # because we compiled those test binaries in the former and not the latter.
+-          # So all paths will expect source tree to be there and not in the build top directly.
+-          # For example: $NIX_BUILD_TOP := /build in general, if you ask yourself.
+-          # NOTE: There could be edge cases if `crate.sourceRoot` does exist but
+-          # it's very hard to reason about them.
+-          # Open a bug if you run into this!
+-          mkdir -p source/
+-          cd source/
+-
+-          ${pkgs.buildPackages.xorg.lndir}/bin/lndir ${crate.src}
+-
+-          # build outputs
+-          testRoot=target/debug
+-          mkdir -p $testRoot
+-
+-          # executables of the crate
+-          # we copy to prevent std::env::current_exe() to resolve to a store location
+-          for i in ${crate}/bin/*; do
+-            cp "$i" "$testRoot"
+-          done
+-          chmod +w -R .
+-
+-          # test harness executables are suffixed with a hash, like cargo does
+-          # this allows to prevent name collision with the main
+-          # executables of the crate
+-          hash=$(basename $out)
+-          for file in ${drv}/tests/*; do
+-            f=$testRoot/$(basename $file)-$hash
+-            cp $file $f
+-            ${testCommand}
+-          done
+-        '';
++        pkgs.stdenvNoCC.mkDerivation {
++          name = "run-tests-${testCrate.name}";
++
++          inherit (crate) src;
++
++          inherit testCrateFlags;
++
++          buildInputs = testInputs;
++
++          buildPhase = ''
++            set -e
++            export RUST_BACKTRACE=1
++
++            # build outputs
++            testRoot=target/debug
++            mkdir -p $testRoot
++
++            # executables of the crate
++            # we copy to prevent std::env::current_exe() to resolve to a store location
++            for i in ${crate}/bin/*; do
++              cp "$i" "$testRoot"
++            done
++            chmod +w -R .
++
++            # test harness executables are suffixed with a hash, like cargo does
++            # this allows to prevent name collision with the main
++            # executables of the crate
++            hash=$(basename $out)
++            for file in ${drv}/tests/*; do
++              f=$testRoot/$(basename $file)-$hash
++              cp $file $f
++              ${testCommand}
++            done
++          '';
++        };
+     in
+     pkgs.runCommand "${crate.name}-linked"
+       {
+-- 
+2.44.0
+

third_party/overlays/tvl.nix

@@ -90,15 +90,10 @@ depot.nix.readTree.drvTargets {
     };
   }));
 
-  # https://github.com/googleapis/google-cloud-go/pull/9665
-  cbtemulator = super.cbtemulator.overrideAttrs (old: {
-    patches = old.patches or [ ] ++ [
-      ./patches/cbtemulator-uds.patch
-    ];
-  });
-
   crate2nix = super.crate2nix.overrideAttrs (old: {
     patches = old.patches or [ ] ++ [
+      # TODO(Kranzes): Remove in next release.
+      ./patches/crate2nix-0001-Fix-Use-mkDerivation-with-src-instead-of-runCommand.patch
       # https://github.com/nix-community/crate2nix/pull/301
       ./patches/crate2nix-tests-debug.patch
     ];
@@ -112,6 +107,25 @@ depot.nix.readTree.drvTargets {
     ];
   });
 
+  # https://github.com/NixOS/nixpkgs/pull/329415/files
+  grpc-health-check = super.rustPlatform.buildRustPackage {
+    pname = "grpc-health-check";
+    version = "unstable-2022-08-19";
+
+    src = super.fetchFromGitHub {
+      owner = "paypizza";
+      repo = "grpc-health-check";
+      rev = "f61bb5e10beadc5ed53144cc540d66e19fc510bd";
+      hash = "sha256-nKut9c1HHIacdRcmvlXe0GrtkgCWN6sxJ4ImO0CIDdo=";
+    };
+
+    cargoHash = "sha256-lz+815iE+oXBQ3PfqBO0QBpZY6x1SNR7OU7BjkRszzI=";
+
+    nativeBuildInputs = [ super.protobuf ];
+    # tests fail
+    doCheck = false;
+  };
+
   # Imports a patch that fixes usage of this package on versions
   # >=1.9. The patch has been proposed upstream, but so far with no
   # reactions from the maintainer:
@@ -121,6 +135,11 @@ depot.nix.readTree.drvTargets {
     patches = (old.patches or [ ]) ++ [ ./patches/tpm2-pkcs11-190-dbupgrade.patch ];
   });
 
+  # Dependency isn't supported by Python 3.12
+  html5validator = super.html5validator.override {
+    python3 = self.python311;
+  };
+
   # macFUSE bump containing fix for https://github.com/osxfuse/osxfuse/issues/974
   # https://github.com/NixOS/nixpkgs/pull/320197
   fuse =
@@ -133,9 +152,4 @@ depot.nix.readTree.drvTargets {
             hash = "sha256-ucTzO2qdN4QkowMVvC3+4pjEVjbwMsB0xFk+bvQxwtQ=";
           };
         }) else super.fuse;
-
-  treefmt = super.treefmt.overrideAttrs (old: {
-    # https://github.com/numtide/treefmt/pull/328
-    patches = old.patches or [ ] ++ [ ./patches/treefmt-fix-no-cache.patch ];
-  });
 }

third_party/radicle-explorer/0001-remove-dependency-on-plausible.patch

@@ -0,0 +1,78 @@
+From cc4718cbea1bd70de21a2be515a944802246ffc7 Mon Sep 17 00:00:00 2001
+From: Vincent Ambo <mail@tazj.in>
+Date: Sun, 15 Sep 2024 03:08:28 +0300
+Subject: [PATCH] remove dependency on plausible
+
+We don't need spyware, thanks.
+---
+ package-lock.json | 9 ---------
+ package.json      | 1 -
+ src/App.svelte    | 8 --------
+ 3 files changed, 18 deletions(-)
+
+diff --git a/package-lock.json b/package-lock.json
+index d52de6c0..d96e342f 100644
+--- a/package-lock.json
++++ b/package-lock.json
+@@ -29,7 +29,6 @@
+         "marked-katex-extension": "^5.1.1",
+         "marked-linkify-it": "^3.1.11",
+         "md5": "^2.3.0",
+-        "plausible-tracker": "^0.3.9",
+         "svelte": "^4.2.19",
+         "twemoji": "^14.0.2",
+         "zod": "^3.23.8"
+@@ -3697,14 +3696,6 @@
+         "url": "https://github.com/sponsors/jonschlinkert"
+       }
+     },
+-    "node_modules/plausible-tracker": {
+-      "version": "0.3.9",
+-      "resolved": "https://registry.npmjs.org/plausible-tracker/-/plausible-tracker-0.3.9.tgz",
+-      "integrity": "sha512-hMhneYm3GCPyQon88SZrVJx+LlqhM1kZFQbuAgXPoh/Az2YvO1B6bitT9qlhpiTdJlsT5lsr3gPmzoVjb5CDXA==",
+-      "engines": {
+-        "node": ">=10"
+-      }
+-    },
+     "node_modules/playwright": {
+       "version": "1.46.1",
+       "resolved": "https://registry.npmjs.org/playwright/-/playwright-1.46.1.tgz",
+diff --git a/package.json b/package.json
+index 6d569ad9..61e8d892 100644
+--- a/package.json
++++ b/package.json
+@@ -73,7 +73,6 @@
+     "marked-katex-extension": "^5.1.1",
+     "marked-linkify-it": "^3.1.11",
+     "md5": "^2.3.0",
+-    "plausible-tracker": "^0.3.9",
+     "svelte": "^4.2.19",
+     "twemoji": "^14.0.2",
+     "zod": "^3.23.8"
+diff --git a/src/App.svelte b/src/App.svelte
+index 8161c390..4281ba61 100644
+--- a/src/App.svelte
++++ b/src/App.svelte
+@@ -1,6 +1,4 @@
+ <script lang="ts">
+-  import Plausible from "plausible-tracker";
+-
+   import * as router from "@app/lib/router";
+   import { unreachable } from "@app/lib/utils";
+ 
+@@ -28,12 +26,6 @@
+ 
+   void router.loadFromLocation();
+ 
+-  if (import.meta.env.PROD) {
+-    const plausible = Plausible({ domain: "app.radicle.xyz" });
+-
+-    plausible.enableAutoPageviews();
+-  }
+-
+   $: document.documentElement.setAttribute("data-codefont", $codeFont);
+   $: document.documentElement.setAttribute("data-theme", $theme);
+ </script>
+-- 
+2.46.0
+

third_party/radicle-explorer/default.nix

@@ -0,0 +1,66 @@
+# radicle-explorer is the web UI for Radicle.
+#
+# They have an upstream Nix derivation, but it only works with experimental
+# features Nix and is quite messy, so this is a copy of the relevant parts.
+{ lib, pkgs, ... }:
+
+let
+  twemoji-assets = pkgs.fetchFromGitHub {
+    owner = "twitter";
+    repo = "twemoji";
+    rev = "v14.0.2";
+    hash = "sha256-YoOnZ5uVukzi/6bLi22Y8U5TpplPzB7ji42l+/ys5xI=";
+  };
+
+  httpdSrc = pkgs.radicle-httpd.src;
+in
+lib.fix (self: pkgs.buildNpmPackage rec {
+  pname = "radicle-explorer";
+  version = (builtins.fromJSON (builtins.readFile "${src}/package.json")).version;
+
+  # source should be synced with the httpd, which is already in nixpkgs
+  src = pkgs.fetchgit {
+    inherit (httpdSrc) url rev;
+    hash = "sha256:09m13238h6j7g02r6332ihgyyzbjx90pgz14rz29pgv7936h6il8";
+  };
+
+  # This might change during nixpkgs bumps and will need updating. Need to fix
+  # upstream so that there is a normal, callable derivation.
+  npmDepsHash = "sha256:1hbrzfjkfc0q8qk03yi6qb9zqm57h7hnkn7fl0yxkrzbrljaljaz";
+
+  patches = [
+    ./0001-remove-dependency-on-plausible.patch
+  ];
+
+  postPatch = ''
+    patchShebangs --build ./scripts
+    mkdir -p "public/twemoji"
+    cp -t public/twemoji -r -- ${twemoji-assets}/assets/svg/*
+    : >scripts/install-twemoji-assets
+  '';
+  dontConfigure = true;
+  doCheck = false;
+
+  installPhase = ''
+    runHook preInstall
+    mkdir -p "$out"
+    cp -r -t "$out" build/*
+    runHook postInstall
+  '';
+
+  # Override the build-time configuration with other preferred seeds which are
+  # displayed on the landing page.
+  passthru.withPreferredSeeds = seeds:
+    let
+      originalConfig = builtins.fromJSON (builtins.readFile "${src}/config/default.json");
+      config = originalConfig // {
+        preferredSeeds = seeds;
+      };
+      newConfig = pkgs.writeText "local.json" (builtins.toJSON config);
+    in
+    self.overrideAttrs (_: {
+      preBuild = ''
+        cp ${newConfig} config/local.json
+      '';
+    });
+})

third_party/rust-crates/default.nix

@@ -292,130 +292,4 @@ depot.nix.readTree.drvTargets rec{
     sha256 = "1kd047p8jv6mhmfzddjvfa2nwkfrb3l1wml6lfm51n1cr06cc9lz";
   };
 
-  libz-sys = buildRustCrate {
-    pname = "libz-sys";
-    version = "1.1.2";
-    sha256 = "1y7v6bkwr4b6yaf951p1ns7mx47b29ziwdd5wziaic14gs1gwq30";
-    buildDependencies = [
-      cc
-      pkg-config
-    ];
-  };
-
-  libgit2-sys = buildRustCrate {
-    pname = "libgit2-sys";
-    version = "0.16.2+1.7.2";
-    sha256 = "0bs446idbmg8s13jvb0ck6qmrskcdn2mp3d4mn9ggxbmiw4ryd3g";
-    dependencies = [
-      libc
-      libz-sys
-    ];
-    libPath = "lib.rs";
-    libName = "libgit2_sys";
-    # TODO: this should be available via `pkgs.defaultCrateOverrides`,
-    # I thought that was included by default?
-    nativeBuildInputs = [ pkg-config ];
-    buildInputs = [ pkgs.zlib pkgs.libgit2 ];
-    buildDependencies = [
-      cc
-      pkg-config
-    ];
-    env.LIBGIT2_NO_VENDOR = "1";
-  };
-
-  matches = buildRustCrate {
-    pname = "matches";
-    version = "0.1.8";
-    sha256 = "03hl636fg6xggy0a26200xs74amk3k9n0908rga2szn68agyz3cv";
-    libPath = "lib.rs";
-  };
-
-  percent-encoding = buildRustCrate {
-    pname = "percent-encoding";
-    version = "2.1.0";
-    sha256 = "0i838f2nr81585ckmfymf8l1x1vdmx6n8xqvli0lgcy60yl2axy3";
-    libPath = "lib.rs";
-  };
-
-  form_urlencoded = buildRustCrate {
-    pname = "form_urlencoded";
-    version = "1.0.1";
-    sha256 = "0rhv2hfrzk2smdh27walkm66zlvccnnwrbd47fmf8jh6m420dhj8";
-    dependencies = [
-      matches
-      percent-encoding
-    ];
-  };
-
-  tinyvec_macros = buildRustCrate {
-    pname = "tinyvec_macros";
-    version = "0.1.0";
-    sha256 = "0aim73hyq5g8b2hs9gjq2sv0xm4xzfbwp5fdyg1frljqzkapq682";
-  };
-
-  tinyvec = buildRustCrate {
-    pname = "tinyvec";
-    version = "1.2.0";
-    sha256 = "1c95nma20kiyrjwfsk7hzd5ir6yy4bm63fmfbfb4dm9ahnlvdp3y";
-    features = [ "alloc" ];
-    dependencies = [
-      tinyvec_macros
-    ];
-  };
-
-  unicode-normalization = buildRustCrate {
-    pname = "unicode-normalization";
-    version = "0.1.17";
-    sha256 = "0w4s0avzlf7pzcclhhih93aap613398sshm6jrxcwq0f9lhis11c";
-    dependencies = [
-      tinyvec
-    ];
-  };
-
-  unicode-bidi = buildRustCrate {
-    pname = "unicode-bidi";
-    version = "0.3.5";
-    sha256 = "193jzlxj1dfcms2381lyd45zh4ywlicj9lzcfpid1zbkmfarymkz";
-    dependencies = [
-      matches
-    ];
-  };
-
-  idna = buildRustCrate {
-    pname = "idna";
-    version = "0.2.3";
-    sha256 = "0hwypd0fpym9lmd4bbqpwyr5lhrlvmvzhi1vy9asc5wxwkzrh299";
-    dependencies = [
-      matches
-      unicode-normalization
-      unicode-bidi
-    ];
-  };
-
-  url = buildRustCrate {
-    pname = "url";
-    version = "2.2.1";
-    sha256 = "1ci1djafh83qhpzbmxnr9w5gcrjs3ghf8rrxdy4vklqyji6fvn5v";
-    dependencies = [
-      form_urlencoded
-      idna
-      matches
-      percent-encoding
-    ];
-  };
-
-
-  git2 = buildRustCrate {
-    pname = "git2";
-    edition = "2018";
-    version = "0.18.1";
-    sha256 = "1d1wm8cn37svyxgvzfapwilkkc9d2x7fcrgciwn8b2pv9aqz102k";
-    dependencies = [
-      bitflags
-      libc
-      libgit2-sys
-      log
-      url
-    ];
-  };
 }

third_party/sources/sources.json

@@ -5,10 +5,22 @@
         "homepage": "https://matrix.to/#/#agenix:nixos.org",
         "owner": "ryantm",
         "repo": "agenix",
-        "rev": "c2fc0762bbe8feb06a2e59a364fa81b3a57671c9",
+        "rev": "f6291c5935fdc4e0bef208cfc0dcab7e3f7a1c41",
-        "sha256": "1lpkwinlax40b7xgzspbkm9rsi4a1x48hxhixnni4irxxwnav0ah",
+        "sha256": "1x8nd8hvsq6mvzig122vprwigsr3z2skanig65haqswn7z7amsvg",
         "type": "tarball",
-        "url": "https://github.com/ryantm/agenix/archive/c2fc0762bbe8feb06a2e59a364fa81b3a57671c9.tar.gz",
+        "url": "https://github.com/ryantm/agenix/archive/f6291c5935fdc4e0bef208cfc0dcab7e3f7a1c41.tar.gz",
+        "url_template": "https://github.com/<owner>/<repo>/archive/<rev>.tar.gz"
+    },
+    "gitignore.nix": {
+        "branch": "master",
+        "description": "Nix functions for filtering local git sources",
+        "homepage": "",
+        "owner": "hercules-ci",
+        "repo": "gitignore.nix",
+        "rev": "637db329424fd7e46cf4185293b9cc8c88c95394",
+        "sha256": "02wxkdpbhlm3yk5mhkhsp3kwakc16xpmsf2baw57nz1dg459qv8w",
+        "type": "tarball",
+        "url": "https://github.com/hercules-ci/gitignore.nix/archive/637db329424fd7e46cf4185293b9cc8c88c95394.tar.gz",
         "url_template": "https://github.com/<owner>/<repo>/archive/<rev>.tar.gz"
     },
     "home-manager": {
@@ -17,10 +29,10 @@
         "homepage": "https://nix-community.github.io/home-manager/",
         "owner": "nix-community",
         "repo": "home-manager",
-        "rev": "a7117efb3725e6197dd95424136f79147aa35e5b",
+        "rev": "a9c9cc6e50f7cbd2d58ccb1cd46a1e06e9e445ff",
-        "sha256": "02q3ck1hjs8xzdhfikqxrnsfs9vh4p7rmdha3vbp6nkkdbdvhgg7",
+        "sha256": "1cxp9rgczr4rhhx1klwcr7a61khizq8hv63gvmy9gfsx7fp4h60a",
         "type": "tarball",
-        "url": "https://github.com/nix-community/home-manager/archive/a7117efb3725e6197dd95424136f79147aa35e5b.tar.gz",
+        "url": "https://github.com/nix-community/home-manager/archive/a9c9cc6e50f7cbd2d58ccb1cd46a1e06e9e445ff.tar.gz",
         "url_template": "https://github.com/<owner>/<repo>/archive/<rev>.tar.gz"
     },
     "impermanence": {
@@ -29,10 +41,10 @@
         "homepage": "",
         "owner": "nix-community",
         "repo": "impermanence",
-        "rev": "a33ef102a02ce77d3e39c25197664b7a636f9c30",
+        "rev": "63f4d0443e32b0dd7189001ee1894066765d18a5",
-        "sha256": "1mig6ns8l5iynsm6pfbnx2b9hmr592s1kqbw6gq1n25czdlcniam",
+        "sha256": "0xnshgwfg834dm9l14p2w3wmhjysjpqpgfk37im0vrk1qgva19g2",
         "type": "tarball",
-        "url": "https://github.com/nix-community/impermanence/archive/a33ef102a02ce77d3e39c25197664b7a636f9c30.tar.gz",
+        "url": "https://github.com/nix-community/impermanence/archive/63f4d0443e32b0dd7189001ee1894066765d18a5.tar.gz",
         "url_template": "https://github.com/<owner>/<repo>/archive/<rev>.tar.gz"
     },
     "naersk": {
@@ -41,10 +53,10 @@
         "homepage": "",
         "owner": "nmattia",
         "repo": "naersk",
-        "rev": "fa19d8c135e776dc97f4dcca08656a0eeb28d5c0",
+        "rev": "3fb418eaf352498f6b6c30592e3beb63df42ef11",
-        "sha256": "1mif058gcbw5d5yixsmzalqlr0h9m9mmbsgv8v4r2mmsbw83k2x0",
+        "sha256": "0v6ncaqm8q2mdv1jhkjjwi1sx4firlhjxpw4wachkwkriyjnkz5g",
         "type": "tarball",
-        "url": "https://github.com/nmattia/naersk/archive/fa19d8c135e776dc97f4dcca08656a0eeb28d5c0.tar.gz",
+        "url": "https://github.com/nmattia/naersk/archive/3fb418eaf352498f6b6c30592e3beb63df42ef11.tar.gz",
         "url_template": "https://github.com/<owner>/<repo>/archive/<rev>.tar.gz"
     },
     "napalm": {
@@ -53,10 +65,10 @@
         "homepage": "",
         "owner": "nix-community",
         "repo": "napalm",
-        "rev": "edcb26c266ca37c9521f6a97f33234633cbec186",
+        "rev": "e1babff744cd278b56abe8478008b4a9e23036cf",
-        "sha256": "0ai1ax380nnpz0mbgbc5vdzafyjilcmdj7kgv087x2vagpprb4yy",
+        "sha256": "04h62p4hxw7fhclki7hcn739hhig3rh9q4njp24j7bm0dk2kj8h6",
         "type": "tarball",
-        "url": "https://github.com/nix-community/napalm/archive/edcb26c266ca37c9521f6a97f33234633cbec186.tar.gz",
+        "url": "https://github.com/nix-community/napalm/archive/e1babff744cd278b56abe8478008b4a9e23036cf.tar.gz",
         "url_template": "https://github.com/<owner>/<repo>/archive/<rev>.tar.gz"
     },
     "nixpkgs": {
@@ -65,10 +77,10 @@
         "homepage": "",
         "owner": "NixOS",
         "repo": "nixpkgs",
-        "rev": "7f993cdf26ccef564eabf31fdb40d140821e12bc",
+        "rev": "99dc8785f6a0adac95f5e2ab05cc2e1bf666d172",
-        "sha256": "0dypbvibfdmv14rqlamf451625fw2fyk11prw9bbywi0q2i313d5",
+        "sha256": "11vz7dshwxszab91da1x98qdlmpxi0v7daz24jj3crpll68n93w0",
         "type": "tarball",
-        "url": "https://github.com/NixOS/nixpkgs/archive/7f993cdf26ccef564eabf31fdb40d140821e12bc.tar.gz",
+        "url": "https://github.com/NixOS/nixpkgs/archive/99dc8785f6a0adac95f5e2ab05cc2e1bf666d172.tar.gz",
         "url_template": "https://github.com/<owner>/<repo>/archive/<rev>.tar.gz"
     },
     "nixpkgs-stable": {
@@ -77,10 +89,10 @@
         "homepage": "",
         "owner": "NixOS",
         "repo": "nixpkgs",
-        "rev": "a2e1d0414259a144ebdc048408a807e69e0565af",
+        "rev": "205fd4226592cc83fd4c0885a3e4c9c400efabb5",
-        "sha256": "1jv90bz3s7j294fhpb29k735fg3xfs9z848szicqarpbz7wfg03g",
+        "sha256": "1f5d2g1p6nfwycpmrnnmc2xmcszp804adp16knjvdkj8nz36y1fg",
         "type": "tarball",
-        "url": "https://github.com/NixOS/nixpkgs/archive/a2e1d0414259a144ebdc048408a807e69e0565af.tar.gz",
+        "url": "https://github.com/NixOS/nixpkgs/archive/205fd4226592cc83fd4c0885a3e4c9c400efabb5.tar.gz",
         "url_template": "https://github.com/<owner>/<repo>/archive/<rev>.tar.gz"
     },
     "rust-overlay": {
@@ -89,10 +101,10 @@
         "homepage": "",
         "owner": "oxalica",
         "repo": "rust-overlay",
-        "rev": "6dc3e45fe4aee36efeed24d64fc68b1f989d5465",
+        "rev": "20c8461785d8f5af32d8d4d5c128589e23d7f033",
-        "sha256": "0vqgkzbfdj920lbm1dy8kylrv2gk4ard38lb3i20xvp2mp1d39n2",
+        "sha256": "1zy2jcy2ika83dwcpxxvmimk317zimwn7hv8h3v43apqwssl0nxv",
         "type": "tarball",
-        "url": "https://github.com/oxalica/rust-overlay/archive/6dc3e45fe4aee36efeed24d64fc68b1f989d5465.tar.gz",
+        "url": "https://github.com/oxalica/rust-overlay/archive/20c8461785d8f5af32d8d4d5c128589e23d7f033.tar.gz",
         "url_template": "https://github.com/<owner>/<repo>/archive/<rev>.tar.gz"
     },
     "rustsec-advisory-db": {
@@ -101,10 +113,10 @@
         "homepage": "https://rustsec.org",
         "owner": "RustSec",
         "repo": "advisory-db",
-        "rev": "af76d4423761499f954411bb3071dcc72e6b0450",
+        "rev": "3cae2352cf82b5815b98aa309e0f4df6aa737cec",
-        "sha256": "167qxr66j638km3z7zk2drjdr4bgqz77hr35vkwdp0lbafmd6y1c",
+        "sha256": "0bba56sk4dlrf8rm3dmy9bxf95bq4rm1g3ppk4n2vfw0wzf7v7ap",
         "type": "tarball",
-        "url": "https://github.com/RustSec/advisory-db/archive/af76d4423761499f954411bb3071dcc72e6b0450.tar.gz",
+        "url": "https://github.com/RustSec/advisory-db/archive/3cae2352cf82b5815b98aa309e0f4df6aa737cec.tar.gz",
         "url_template": "https://github.com/<owner>/<repo>/archive/<rev>.tar.gz"
     }
 }

tools/depot-deps.nix

@@ -8,6 +8,7 @@ depot.nix.lazy-deps {
   depotfmt.attr = "tools.depotfmt";
   fetch-depot-inbox.attr = "tools.fetch-depot-inbox";
   git-r.attr = "tools.git-r";
+  git-review.attr = "third_party.nixpkgs.git-review";
   gerrit-update.attr = "tools.gerrit-update";
   gerrit.attr = "tools.gerrit-cli";
   hash-password.attr = "tools.hash-password";

tools/depotfmt.nix

@@ -1,24 +1,14 @@
 # Builds treefmt for depot, with a hardcoded configuration that
 # includes the right paths to formatters.
-{ depot, pkgs, ... }:
+{ pkgs, ... }:
 
 let
-  # terraform fmt can't handle multiple paths at once, but treefmt
-  # expects this
-  terraformat = pkgs.writeShellScript "terraformat" ''
-    echo "$@" | xargs -n1 ${pkgs.terraform}/bin/terraform fmt
-  '';
-
   config = pkgs.writeText "depot-treefmt-config" ''
     [formatter.go]
-    command = "${depot.nix.buildGo.go}/bin/gofmt"
+    command = "${pkgs.go}/bin/gofmt"
     options = [ "-w" ]
     includes = ["*.go"]
 
-    [formatter.tf]
-    command = "${terraformat}"
-    includes = [ "*.tf" ]
-
     [formatter.nix]
     command = "${pkgs.nixpkgs-fmt}/bin/nixpkgs-fmt"
     includes = [ "*.nix" ]
@@ -28,8 +18,10 @@ let
 
     [formatter.rust]
     command = "${pkgs.rustfmt}/bin/rustfmt"
+    options = ["--edition", "2021"]
     includes = [ "*.rs" ]
     excludes = [
+      "users/emery/*",
       "users/tazjin/*",
     ]
   '';
@@ -53,10 +45,12 @@ let
   '';
 in
 depotfmt.overrideAttrs (_: {
-  passthru.config = config;
+  passthru = {
-  passthru.meta.ci.extraSteps.check = {
+    inherit config check;
-    label = "depot formatting check";
+    meta.ci.extraSteps.check = {
-    command = check;
+      label = "depot formatting check";
-    alwaysRun = true;
+      command = check;
+      alwaysRun = true;
+    };
   };
 })

tools/eaglemode/commands/B.nix

@@ -0,0 +1,23 @@
+{ depot, pkgs, ... }:
+
+let
+  em = depot.tools.eaglemode;
+in
+em.mkCommand {
+  name = "9 B";
+  hotkey = "Ctrl+E";
+  icon = "${./plan9.tga}";
+
+  description = ''
+    Plumb target to Sam or Acme
+  '';
+
+  code = ''
+    ErrorIfNotSingleTarget();
+
+    my @tgt=GetTgt();
+    my $dir=$tgt[0];
+
+    ExecOrError('${pkgs.plan9port}/bin/9', 'B', $dir);
+  '';
+}

tools/eaglemode/commands/emacsclient.nix

@@ -0,0 +1,26 @@
+{ depot, pkgs, ... }:
+
+let
+  em = depot.tools.eaglemode;
+  icon = em.mkTGA "emacs" "${pkgs.emacs}/share/icons/hicolor/128x128/apps/emacs.png";
+in
+em.mkCommand {
+  name = "Emacsclient";
+  hotkey = "Ctrl+E";
+  icon = "${icon}";
+
+  description = ''
+    Open target in Emacsclient.
+
+    Emacs server must be running already for this to have any effect.
+  '';
+
+  code = ''
+    ErrorIfNotSingleTarget();
+
+    my @tgt=GetTgt();
+    my $dir=$tgt[0];
+
+    ExecOrError('${pkgs.emacs}/bin/emacsclient', '-n', $dir);
+  '';
+}

tools/eaglemode/default.nix

@@ -0,0 +1,146 @@
+# Helper functions for extending Eagle Mode with useful stuff.
+#
+# Eagle Mode's customisation usually expects people to copy the entire
+# configuration into their user folder, which we can automate fairly easily
+# using Nix, letting users choose whether to keep upstream config or not.
+{ depot, lib, pkgs, ... }:
+
+let
+  mkDesc = d: lib.concatMapStringsSep "\n"
+    (x: "# Descr =${x}")
+    (builtins.filter (s: s != "") (lib.splitString "\n" d));
+
+  configWrapper = pkgs.runCommand "eaglemode-config-wrapper" { } ''
+    cp ${./wrapper.go} wrapper.go
+    export HOME=$PWD
+    ${pkgs.go}/bin/go build wrapper.go
+    install -Dm755 wrapper $out/bin/wrapper
+  '';
+in
+rec {
+  # mkCommand creates an Eagle Mode command for the file browser.
+  #
+  # Commands are basically little Perl scripts with a command standard library
+  # available. They receive the user's selected target from Eagle Mode.
+  mkCommand = lib.makeOverridable (
+    {
+      # Name of the command.
+      name
+    , # User-facing description, displayed in Eagle Mode UI. Can be multi-line.
+      description
+    , # Verbatim Perl code of the command. Command library is already available.
+      code
+    , # Caption for the UI button (defaults to name).
+      caption ? name
+    , icon ? "terminal.tga"
+    , # TODO: what's a good default?
+      hotkey ? ""
+    , order ? 1.0
+    }: pkgs.writeTextDir "emFileMan/Commands/${name}.pl" (''
+      #!${pkgs.perl}/bin/perl
+      #[[BEGIN PROPERTIES]]
+      # Type = Command
+      # Interpreter = perl
+      # DefaultFor = directory
+      # Caption = ${caption}
+      # Order = ${toString order}
+      # Icon = ${icon}
+    ''
+    + (lib.optionalString (description != "") "${mkDesc description}\n")
+    + (lib.optionalString (hotkey != "") "# Hotkey = ${hotkey}\n")
+    + ''
+      #[[END PROPERTIES]]
+
+      use strict;
+      use warnings;
+      BEGIN { require "$ENV{'EM_DIR'}/res/emFileMan/scripts/cmd-util.pl"; }
+
+      ${if builtins.isString code
+        then code
+        else (if builtins.isPath code
+             then builtins.readFile code
+             else throw "code must be a string (literal code) or path to file")}
+    '')
+  );
+
+  # mkTGA converts the given image to a TGA image.
+  mkTGA = name: path: pkgs.runCommand "${name}.tga" { } ''
+    ${pkgs.imagemagick}/bin/convert ${path} $out
+  '';
+
+  buildPlugin = lib.makeOverridable (
+    { name
+    , src
+    , version
+    , eaglemode ? pkgs.eaglemode
+    , target ? name
+    , extraNativeBuildInputs ? [ ]
+    , extraBuildInputs ? [ ]
+    }:
+    pkgs.stdenv.mkDerivation {
+      pname = "eaglemode-plugin-${name}";
+      inherit src version;
+      # inherit (eaglemode.drvAttrs) dontPatchELF;
+
+      nativeBuildInputs = eaglemode.drvAttrs.nativeBuildInputs ++ extraNativeBuildInputs;
+      buildInputs = eaglemode.drvAttrs.buildInputs ++ extraBuildInputs ++ [ eaglemode ];
+
+      buildPhase = ''
+        runHook preBuild
+
+        # merge eaglemode & plugin folders
+        cp -r ${pkgs.srcOnly eaglemode} merged-src && chmod -R u+rw merged-src
+        cp -r $src/* merged-src && chmod -R u+rw merged-src
+        cd merged-src
+
+        export NIX_LDFLAGS="$NIX_LDFLAGS -lXxf86vm -lXext -lXinerama"
+        perl make.pl build projects=${target} continue=no
+
+        runHook postBuild
+      '';
+
+      installPhase = ''
+        runHook preInstall
+
+        mkdir -p $out/lib
+        cp -r lib/lib${target}.so $out/lib
+
+        if [ -d "$src/etc" ]; then
+          cp -r $src/etc/* $out
+        fi
+
+        runHook postInstall
+      '';
+    }
+  );
+
+  # etcDir creates a directory layout suitable for use in the EM_USER_CONFIG_DIR
+  # environment variable.
+  #
+  # Note that Eagle Mode requires the value of that variable to be mutable at
+  # runtime (it is the same place where it persists all of its user-controlled
+  # state), so the results of this function can not be used directly.
+  etcDir =
+    { eaglemode ? pkgs.eaglemode
+    , extraPaths ? [ ]
+    }: pkgs.runCommand "eaglemode-config" { } ''
+      mkdir $out
+
+      ${
+        lib.concatMapStringsSep "\n" (s: "cp -rT ${s} $out/\nchmod -R u+rw $out/\n") ([ "${eaglemode}/etc"] ++ extraPaths)
+      }
+    '';
+
+  # withConfig creates an Eagle Mode wrapper that runs it with the given
+  # configuration.
+  withConfig = { eaglemode ? pkgs.eaglemode, config }: pkgs.writeShellScriptBin "eaglemode" ''
+    ${configWrapper}/bin/wrapper --em-config "${config}"
+
+    if [ -d "${config}/lib" ]; then
+      export LD_LIBRARY_PATH="${config}/lib:$LD_LIBRARY_PATH"
+      exec ${eaglemode}/bin/eaglemode "$@"
+    fi
+
+    exec ${eaglemode}/bin/eaglemode "$@"
+  '';
+}

tools/eaglemode/plugins/avif/default.nix

@@ -0,0 +1,10 @@
+{ depot, pkgs, ... }:
+
+depot.tools.eaglemode.buildPlugin {
+  name = "avif";
+  version = "canon";
+  src = ./.;
+  target = "PlAvif";
+  extraBuildInputs = [ pkgs.libavif ];
+  extraNativeBuildInputs = [ pkgs.pkg-config ];
+}

tools/eaglemode/plugins/avif/etc/emCore/FpPlugins/PlAvif.emFpPlugin

@@ -0,0 +1,6 @@
+#%rec:emFpPlugin%#
+
+FileTypes = { ".avif" }
+Priority = 1.0
+Library = "PlAvif"
+Function = "PlAvifFpPluginFunc"

tools/eaglemode/plugins/avif/makers/PlAvif.maker.pm

@@ -0,0 +1,64 @@
+package PlAvif;
+
+use strict;
+use warnings;
+
+sub GetDependencies
+{
+	return ('emCore');
+}
+
+sub IsEssential
+{
+	return 0;
+}
+
+sub GetFileHandlingrules
+{
+	return ();
+}
+
+sub GetExtraBuildOptions
+{
+	return ();
+}
+
+sub Build
+{
+	shift;
+	my %options=@_;
+
+	my @libAvifFlags=();
+	if ($options{'avif-inc-dir'} eq '' && $options{'avif-lib-dir'} eq '') {
+		@libAvifFlags=split("\n",readpipe(
+			"perl \"".$options{'utils'}."/PkgConfig.pl\" libavif"
+		));
+	}
+	if (!@libAvifFlags) {
+		if ($options{'avif-inc-dir'} ne '') {
+			push(@libAvifFlags, "--inc-search-dir", $options{'avif-inc-dir'});
+		}
+		if ($options{'avif-lib-dir'} ne '') {
+			push(@libAvifFlags, "--lib-search-dir", $options{'avif-lib-dir'});
+		}
+		push(@libAvifFlags, "--link", "avif");
+	}
+
+	system(
+		@{$options{'unicc_call'}},
+		"--math",
+		"--rtti",
+		"--exceptions",
+		"--bin-dir"       , "bin",
+		"--lib-dir"       , "lib",
+		"--obj-dir"       , "obj",
+		"--inc-search-dir", "include",
+		@libAvifFlags,
+		"--link"          , "emCore",
+		"--type"          , "dynlib",
+		"--name"          , "PlAvif",
+		"src/PlAvif.cpp"
+	)==0 or return 0;
+
+	return 1;
+}

tools/eaglemode/plugins/avif/src/PlAvif.cpp

@@ -0,0 +1,190 @@
+#include <emCore/emFpPlugin.h>
+#include <emCore/emImageFile.h>
+
+#include "avif/avif.h"
+
+class PlAvifImageFileModel : public emImageFileModel
+{
+public:
+
+	static emRef<PlAvifImageFileModel> Acquire(
+		emContext & context, const emString & name, bool common=true
+	);
+
+protected:
+	PlAvifImageFileModel(emContext & context, const emString & name);
+	virtual ~PlAvifImageFileModel();
+	virtual void TryStartLoading();
+	virtual bool TryContinueLoading();
+	virtual void QuitLoading();
+	virtual void TryStartSaving();
+	virtual bool TryContinueSaving();
+	virtual void QuitSaving();
+	virtual emUInt64 CalcMemoryNeed();
+	virtual double CalcFileProgress();
+
+private:
+	struct LoadingState;
+	LoadingState * L = NULL;
+};
+
+
+struct PlAvifImageFileModel::LoadingState {
+	avifRGBImage rgb;
+	avifDecoder * decoder;
+};
+
+
+emRef<PlAvifImageFileModel> PlAvifImageFileModel::Acquire(
+	emContext & context, const emString & name, bool common
+)
+{
+	EM_IMPL_ACQUIRE(PlAvifImageFileModel, context, name, common)
+}
+
+
+PlAvifImageFileModel::PlAvifImageFileModel(
+	emContext & context, const emString & name
+)
+	: emImageFileModel(context, name)
+{
+}
+
+
+PlAvifImageFileModel::~PlAvifImageFileModel()
+{
+	PlAvifImageFileModel::QuitLoading();
+	PlAvifImageFileModel::QuitSaving();
+}
+
+
+void PlAvifImageFileModel::TryStartLoading()
+{
+	avifResult result;
+
+	L = new LoadingState;
+	memset(L, 0, sizeof(LoadingState));
+
+	L->decoder = avifDecoderCreate();
+	if (L->decoder == NULL) {
+		throw emException("failed to create AVIF decoder");
+	}
+
+	result = avifDecoderSetIOFile(L->decoder, GetFilePath());
+	if (result != AVIF_RESULT_OK) {
+		throw emException("%s", avifResultToString(result));
+	}
+
+	result = avifDecoderParse(L->decoder);
+	if (result != AVIF_RESULT_OK) {
+		throw emException("%s", avifResultToString(result));
+	}
+
+	FileFormatInfo = emString::Format(
+		"AVIF %s %ubpc",
+			avifPixelFormatToString(L->decoder->image->yuvFormat),
+			L->decoder->image->depth
+	);
+
+
+	Signal(ChangeSignal);
+}
+
+
+bool PlAvifImageFileModel::TryContinueLoading()
+{
+	avifResult result;
+
+	if (!Image.GetHeight()) {
+		Image.Setup(
+			L->decoder->image->width,
+			L->decoder->image->height,
+			L->decoder->alphaPresent ? 4 : 3
+		);
+	}
+
+	result = avifDecoderNextImage(L->decoder);
+	if (result != AVIF_RESULT_OK) {
+		throw emException("%s", avifResultToString(result));
+	}
+
+	avifRGBImageSetDefaults(&L->rgb, L->decoder->image);
+	L->rgb.format = L->decoder->alphaPresent ?
+		AVIF_RGB_FORMAT_RGBA : AVIF_RGB_FORMAT_RGB;
+	L->rgb.pixels   = Image.GetWritableMap();
+	L->rgb.width    = Image.GetWidth();
+	L->rgb.height   = Image.GetHeight();
+	L->rgb.depth    = 8;
+	L->rgb.rowBytes = Image.GetWidth() * Image.GetChannelCount();
+
+	result = avifImageYUVToRGB(L->decoder->image, &L->rgb);
+	if (result != AVIF_RESULT_OK) {
+		throw emException("%s", avifResultToString(result));
+	}
+
+	Signal(ChangeSignal);
+	return true;
+}
+
+
+void PlAvifImageFileModel::QuitLoading()
+{
+	if (L) {
+		if (L->decoder) avifDecoderDestroy(L->decoder);
+		delete L;
+		L = NULL;
+	}
+}
+
+
+void PlAvifImageFileModel::TryStartSaving()
+{
+	throw emException("PlAvifImageFileModel: Saving not implemented.");
+}
+
+
+bool PlAvifImageFileModel::TryContinueSaving()
+{
+	return false;
+}
+
+
+void PlAvifImageFileModel::QuitSaving()
+{
+}
+
+
+emUInt64 PlAvifImageFileModel::CalcMemoryNeed()
+{
+	return
+		(emUInt64)
+			L->decoder->image->width *
+			L->decoder->image->height *
+			(L->decoder->alphaPresent ? 4 : 3);
+}
+
+
+double PlAvifImageFileModel::CalcFileProgress()
+{
+	return 0.0;
+}
+
+extern "C" {
+	emPanel * PlAvifFpPluginFunc(
+		emPanel::ParentArg parent, const emString & name,
+		const emString & path, emFpPlugin * plugin,
+		emString * errorBuf
+	)
+	{
+		if (plugin->Properties.GetCount()) {
+			*errorBuf="PlAvifFpPlugin: No properties allowed.";
+			return NULL;
+		}
+		return new emImageFilePanel(
+			parent, name,
+			PlAvifImageFileModel::Acquire(
+				parent.GetRootContext(), path
+			)
+		);
+	}
+}

tools/eaglemode/plugins/example.nix

@@ -0,0 +1,17 @@
+{ depot, pkgs, ... }:
+
+let
+  em = depot.tools.eaglemode;
+  emSrc = with pkgs; srcOnly eaglemode;
+in
+em.buildPlugin {
+  name = "example";
+  version = "canon";
+
+  src = pkgs.runCommand "em-plugin-example-src" { } ''
+    set -ux
+    cp -r ${emSrc}/doc/examples/CppApiExamples/PluginExample $out
+  '';
+
+  target = "PlEx";
+}

tools/eaglemode/plugins/qoi/default.nix

@@ -0,0 +1,12 @@
+{ depot, pkgs, ... }:
+
+let
+  em = depot.tools.eaglemode;
+  emSrc = pkgs.srcOnly pkgs.em;
+in
+em.buildPlugin {
+  name = "qoi";
+  version = "canon";
+  src = ./.;
+  target = "PlQoi";
+}

tools/eaglemode/plugins/qoi/etc/emCore/FpPlugins/PlQoi.emFpPlugin

@@ -0,0 +1,6 @@
+#%rec:emFpPlugin%#
+
+FileTypes = { ".qoi" }
+Priority = 1.0
+Library = "PlQoi"
+Function = "PlQoiFpPluginFunc"

tools/eaglemode/plugins/qoi/makers/PlQoi.maker.pm

@@ -0,0 +1,47 @@
+package PlQoi;
+
+use strict;
+use warnings;
+
+sub GetDependencies
+{
+	return ('emCore');
+}
+
+sub IsEssential
+{
+	return 0;
+}
+
+sub GetFileHandlingrules
+{
+	return ();
+}
+
+sub GetExtraBuildOptions
+{
+	return ();
+}
+
+sub Build
+{
+	shift;
+	my %options=@_;
+
+	system(
+		@{$options{'unicc_call'}},
+		"--math",
+		"--rtti",
+		"--exceptions",
+		"--bin-dir"       , "bin",
+		"--lib-dir"       , "lib",
+		"--obj-dir"       , "obj",
+		"--inc-search-dir", "include",
+		"--link"          , "emCore",
+		"--type"          , "dynlib",
+		"--name"          , "PlQoi",
+		"src/PlQoi.cpp"
+	)==0 or return 0;
+
+	return 1;
+}

tools/eaglemode/plugins/qoi/src/PlQoi.cpp

@@ -0,0 +1,273 @@
+#include <emCore/emFpPlugin.h>
+#include <emCore/emImageFile.h>
+
+/*
+QOI Utilities
+
+Copyright (c) 2021, Dominic Szablewski - https://phoboslab.org
+SPDX-License-Identifier: MIT
+*/
+
+#define QOI_OP_INDEX  0x00 /* 00xxxxxx */
+#define QOI_OP_DIFF   0x40 /* 01xxxxxx */
+#define QOI_OP_LUMA   0x80 /* 10xxxxxx */
+#define QOI_OP_RUN    0xc0 /* 11xxxxxx */
+#define QOI_OP_RGB    0xfe /* 11111110 */
+#define QOI_OP_RGBA   0xff /* 11111111 */
+
+#define QOI_MASK_2    0xc0 /* 11000000 */
+
+#define QOI_COLOR_HASH(C) (C.GetRed()*3 + C.GetGreen()*5 + C.GetBlue()*7 + C.GetAlpha()*11)
+
+#define QOI_MAGIC \
+	(((unsigned int)'q') << 24 | ((unsigned int)'o') << 16 | \
+	 ((unsigned int)'i') <<  8 | ((unsigned int)'f'))
+
+#define QOI_HEADER_SIZE 14
+
+static unsigned int qoi_read_32(const unsigned char *bytes, int *p) {
+	unsigned int a = bytes[(*p)++];
+	unsigned int b = bytes[(*p)++];
+	unsigned int c = bytes[(*p)++];
+	unsigned int d = bytes[(*p)++];
+	return a << 24 | b << 16 | c << 8 | d;
+}
+
+
+class PlQoiImageFileModel : public emImageFileModel
+{
+public:
+
+	static emRef<PlQoiImageFileModel> Acquire(
+		emContext & context, const emString & name, bool common=true
+	);
+
+protected:
+	PlQoiImageFileModel(emContext & context, const emString & name);
+	virtual ~PlQoiImageFileModel();
+	virtual void TryStartLoading();
+	virtual bool TryContinueLoading();
+	virtual void QuitLoading();
+	virtual void TryStartSaving();
+	virtual bool TryContinueSaving();
+	virtual void QuitSaving();
+	virtual emUInt64 CalcMemoryNeed();
+	virtual double CalcFileProgress();
+
+private:
+	struct LoadingState;
+	LoadingState * L = NULL;
+};
+
+
+struct PlQoiImageFileModel::LoadingState {
+	FILE * file;
+	unsigned int width, height, channels;
+	size_t file_len;
+};
+
+
+emRef<PlQoiImageFileModel> PlQoiImageFileModel::Acquire(
+	emContext & context, const emString & name, bool common
+)
+{
+	EM_IMPL_ACQUIRE(PlQoiImageFileModel, context, name, common)
+}
+
+
+PlQoiImageFileModel::PlQoiImageFileModel(
+	emContext & context, const emString & name
+)
+	: emImageFileModel(context, name)
+{
+}
+
+
+PlQoiImageFileModel::~PlQoiImageFileModel()
+{
+	PlQoiImageFileModel::QuitLoading();
+	PlQoiImageFileModel::QuitSaving();
+}
+
+
+void PlQoiImageFileModel::TryStartLoading()
+{
+	unsigned char header[QOI_HEADER_SIZE];
+	unsigned int header_magic, colorspace;
+	int pos = 0;
+
+	L = new LoadingState;
+	memset(L, 0, sizeof(LoadingState));
+	L->file = fopen(GetFilePath(),"rb");
+	if (!L->file) throw emException("%s",emGetErrorText(errno).Get());
+
+	if (fread(header, 1, sizeof(header), L->file) != sizeof(header)) {
+			if (ferror(L->file)) {
+				throw emException("%s",emGetErrorText(errno).Get());
+			}
+			else  {
+				throw emException("QOI header not found");
+			}
+	}
+
+	header_magic = qoi_read_32(header, &pos);
+	L->width = qoi_read_32(header, &pos);
+	L->height = qoi_read_32(header, &pos);
+	L->channels = header[pos++];
+	colorspace = header[pos++];
+
+	if (
+		L->width == 0 || L->height == 0 ||
+		L->channels < 3 || L->channels > 4 ||
+		colorspace > 1 ||
+		header_magic != QOI_MAGIC
+	) {
+		throw emException("QOI header not valid");
+	}
+
+	fseek(L->file, 0, SEEK_END);
+	L->file_len = ftell(L->file);
+
+	if (L->file_len <= QOI_HEADER_SIZE || fseek(L->file, 0, SEEK_SET) != 0) {
+		throw emException("QOI data incomplete");
+	}
+
+	FileFormatInfo = "QOI ";
+	FileFormatInfo += (
+		colorspace ? "all channels linear" : "sRGB with linear alpha"
+	);
+
+	Signal(ChangeSignal);
+}
+
+
+bool PlQoiImageFileModel::TryContinueLoading()
+{
+	emArray<unsigned char> data;
+	emColor index[64];
+	emColor px { 0, 0, 0, 255 };
+	int pos = QOI_HEADER_SIZE;
+	int run = 0;
+
+	if (!Image.GetHeight()) {
+		Image.Setup(L->width, L->height, L->channels);
+	}
+
+	data.SetCount(L->file_len);
+	if (fread(data.GetWritable(), 1, L->file_len, L->file) < L->file_len) {
+		if (ferror(L->file)) {
+			throw emException("%s",emGetErrorText(errno).Get());
+		}
+		else  {
+			throw emException("QOI data incomplete");
+		}
+	}
+
+	memset(index, 0, sizeof(index));
+
+	for (int px_y = 0; px_y < L->height; px_y++) {
+		for (int px_x = 0; px_x < L->width; px_x++) {
+			if (run > 0) {
+				run--;
+			} else if (pos < data.GetCount()) {
+				int b1 = data.Get(pos++);
+
+				if (b1 == QOI_OP_RGB) {
+					px.SetRed(   data.Get(pos++));
+					px.SetGreen( data.Get(pos++));
+					px.SetBlue(  data.Get(pos++));
+				} else if (b1 == QOI_OP_RGBA) {
+					px.SetRed(   data.Get(pos++));
+					px.SetGreen( data.Get(pos++));
+					px.SetBlue(  data.Get(pos++));
+					px.SetAlpha( data.Get(pos++));
+				} else if ((b1 & QOI_MASK_2) == QOI_OP_INDEX) {
+					px = index[b1];
+				} else if ((b1 & QOI_MASK_2) == QOI_OP_DIFF) {
+					px.SetRed(
+						  px.GetRed() + ((b1 >> 4) & 0x03) - 2);
+					px.SetGreen(
+						px.GetGreen() + ((b1 >> 2) & 0x03) - 2);
+					px.SetBlue(
+						 px.GetBlue() + ( b1       & 0x03) - 2);
+				} else if ((b1 & QOI_MASK_2) == QOI_OP_LUMA) {
+					int b2 = data.Get(pos++);
+					int vg = (b1 & 0x3f) - 32;
+					px.SetRed(
+						  px.GetRed() + vg - 8 + ((b2 >> 4) & 0x0f));
+					px.SetGreen(
+						px.GetGreen() + vg);
+					px.SetBlue(
+						 px.GetBlue() + vg - 8 + (b2 & 0x0f));
+				} else if ((b1 & QOI_MASK_2) == QOI_OP_RUN) {
+					run = (b1 & 0x3f);
+				}
+				index[QOI_COLOR_HASH(px) % 64] = px;
+			}
+			Image.SetPixel(px_x, px_y, px);
+		}
+	}
+
+	Signal(ChangeSignal);
+	return true;
+}
+
+
+void PlQoiImageFileModel::QuitLoading()
+{
+	if (L) {
+		if (L->file) fclose(L->file);
+		delete L;
+		L = NULL;
+	}
+}
+
+
+void PlQoiImageFileModel::TryStartSaving()
+{
+	throw emException("PlQoiImageFileModel: Saving not implemented.");
+}
+
+
+bool PlQoiImageFileModel::TryContinueSaving()
+{
+	return false;
+}
+
+
+void PlQoiImageFileModel::QuitSaving()
+{
+}
+
+
+emUInt64 PlQoiImageFileModel::CalcMemoryNeed()
+{
+	return
+		(emUInt64)L->width * L->height * L->channels + L->file_len;
+}
+
+
+double PlQoiImageFileModel::CalcFileProgress()
+{
+	return 0.0;
+}
+
+extern "C" {
+	emPanel * PlQoiFpPluginFunc(
+		emPanel::ParentArg parent, const emString & name,
+		const emString & path, emFpPlugin * plugin,
+		emString * errorBuf
+	)
+	{
+		if (plugin->Properties.GetCount()) {
+			*errorBuf="PlQoiFpPlugin: No properties allowed.";
+			return NULL;
+		}
+		return new emImageFilePanel(
+			parent, name,
+			PlQoiImageFileModel::Acquire(
+				parent.GetRootContext(), path
+			)
+		);
+	}
+}

tools/eaglemode/plugins/yatracker/default.nix

@@ -0,0 +1,18 @@
+{ depot, pkgs, ... }:
+
+let
+  em = depot.tools.eaglemode;
+  emSrc = with pkgs; srcOnly eaglemode;
+in
+(em.buildPlugin {
+  name = "yatracker";
+  version = "canon";
+  src = ./.;
+  target = "PlYaTracker";
+}).overrideAttrs (_: {
+  postInstall = ''
+    mkdir -p $out/icons
+    ${pkgs.imagemagick}/bin/convert $src/logo.webp $out/icons/yandex-tracker.tga
+  '';
+})
+

tools/eaglemode/plugins/yatracker/etc/emCore/FpPlugins/PlYaTracker.emFpPlugin

@@ -0,0 +1,6 @@
+#%rec:emFpPlugin%#
+
+FileTypes = { ".YaTracker" }
+Priority = 1.0
+Library = "PlYaTracker"
+Function = "PlYaTrackerPluginFunc"

tools/eaglemode/plugins/yatracker/makers/PlYaTracker.maker.pm

@@ -0,0 +1,47 @@
+package PlYaTracker;
+
+use strict;
+use warnings;
+
+sub GetDependencies
+{
+	return ('emCore');
+}
+
+sub IsEssential
+{
+	return 0;
+}
+
+sub GetFileHandlingRules
+{
+	return ();
+}
+
+sub GetExtraBuildOptions
+{
+	return ();
+}
+
+sub Build
+{
+	shift;
+	my %options=@_;
+
+	system(
+		@{$options{'unicc_call'}},
+		"--math",
+		"--rtti",
+		"--exceptions",
+		"--bin-dir"       , "bin",
+		"--lib-dir"       , "lib",
+		"--obj-dir"       , "obj",
+		"--inc-search-dir", "include",
+		"--link"          , "emCore",
+		"--type"          , "dynlib",
+		"--name"          , "PlYaTracker",
+		"src/PlYaTracker/PlYaTracker.cpp"
+	)==0 or return 0;
+
+	return 1;
+}

tools/eaglemode/plugins/yatracker/src/PlYaTracker/PlYaTracker.cpp

@@ -0,0 +1,58 @@
+#include <emCore/emFilePanel.h>
+#include <emCore/emFpPlugin.h>
+#include <emCore/emRecFileModel.h>
+#include <emCore/emToolkit.h>
+
+class PlYaTrackerConfig final : public emRecFileModel, public emStructRec {
+ public:
+  static emRef<PlYaTrackerConfig> Acquire(emContext& context,
+                                          const emString& name,
+                                          bool common = true);
+
+  virtual const char* GetFormatName() const;
+
+  emStringRec URL;
+  emStringRec Token;
+
+ protected:
+  PlYaTrackerConfig(emContext& context, const emString& name);
+};
+
+emRef<PlYaTrackerConfig> PlYaTrackerConfig::Acquire(emContext& context,
+                                                    const emString& name,
+                                                    bool common) {
+  EM_IMPL_ACQUIRE(PlYaTrackerConfig, context, name, common)
+}
+
+const char* PlYaTrackerConfig::GetFormatName() const { return "PlYaTracker"; }
+
+PlYaTrackerConfig::PlYaTrackerConfig(emContext& context, const emString& name)
+    : emRecFileModel(context, name),
+      emStructRec(),
+      URL(this, "URL"),
+      Token(this, "Token") {
+  PostConstruct(*this);
+}
+
+class PlYaTrackerFilePanel : public emFilePanel {
+ public:
+  PlYaTrackerFilePanel(ParentArg parent, const emString& name,
+                       emRef<PlYaTrackerConfig> config);
+
+ private:
+  emRef<PlYaTrackerConfig> Config;
+};
+
+PlYaTrackerFilePanel::PlYaTrackerFilePanel(ParentArg parent,
+                                           const emString& name,
+                                           emRef<PlYaTrackerConfig> config)
+    : emFilePanel(parent, name, config), Config(config) {}
+
+extern "C" {
+emPanel* PlYaTrackerPluginFunc(emPanel::ParentArg parent, const emString& name,
+                               const emString& path, emFpPlugin* plugin,
+                               emString* errorBuf) {
+  return new PlYaTrackerFilePanel(
+      parent, name, PlYaTrackerConfig::Acquire(parent.GetRootContext(), path));
+}
+}

tools/eaglemode/wrapper.go

@@ -0,0 +1,156 @@
+// Eagle Mode configuration wrapper that recreates the required directory
+// structure for Eagle Mode based on the output of depot.tools.eaglemode.etcDir
+//
+// This will replace *all* symlinks in the Eagle Mode configuration directory,
+// but it will not touch actual files. Missing folders will be created.
+package main
+
+import (
+	"flag"
+	"fmt"
+	"io/fs"
+	"log"
+	"os"
+	"os/user"
+	"path"
+	"path/filepath"
+	"strings"
+)
+
+func configDir() (string, error) {
+	v := os.Getenv("EM_USER_CONFIG_DIR")
+	if v != "" {
+		return v, nil
+	}
+
+	usr, err := user.Current()
+	if err != nil {
+		return "", fmt.Errorf("failed to get current user: %w", err)
+	}
+
+	return path.Join(usr.HomeDir, ".eaglemode"), nil
+}
+
+// cleanupConfig removes *all* existing symlinks in the configuration which do
+// not point into the right Nix store path.
+func cleanupConfig(conf string, dir string) (map[string]bool, error) {
+	// In case of first launch, we might have to create the directory.
+	_ = os.MkdirAll(dir, 0755)
+	c := 0
+
+	currentFiles := map[string]bool{}
+
+	walker := func(p string, d fs.DirEntry, e error) error {
+		if e != nil {
+			return fmt.Errorf("could not walk %s in config directory: %w", p, e)
+		}
+
+		if d.Type()&fs.ModeSymlink != 0 {
+			target, err := os.Readlink(p)
+			if err != nil {
+				return fmt.Errorf("could not read link for %s: %w", p, err)
+			}
+
+			if !strings.HasPrefix(target, conf) {
+				err = os.Remove(p)
+				c++
+				if err != nil {
+					return fmt.Errorf("could not remove stale link %q: %w", p, err)
+				}
+				log.Printf("removed stale symlink %q", p)
+			} else {
+				currentFiles[p] = false
+			}
+		}
+
+		if d.Type().IsRegular() {
+			currentFiles[p] = true
+		}
+
+		return nil
+	}
+
+	err := filepath.WalkDir(dir, walker)
+	if err != nil {
+		return nil, err
+	}
+
+	if c > 0 {
+		log.Printf("removed %v stale symlinks", c)
+	}
+
+	return currentFiles, nil
+}
+
+// linkConfig traverses the given Eagle Mode configuration and links everything
+// to the expected location in the user's configuration directory.
+//
+// If the user placed actual files in the configuration directory at paths that
+// would be overwritten, they will not be touched.
+func linkConfig(conf string, dir string, existing map[string]bool) error {
+	walker := func(p string, d fs.DirEntry, e error) error {
+		if e != nil {
+			return fmt.Errorf("could not walk %s in config directory: %w", p, e)
+		}
+
+		target := path.Join(dir, strings.TrimPrefix(p, conf))
+
+		if d.Type().IsDir() {
+			err := os.MkdirAll(target, 0755)
+			if err != nil {
+				return fmt.Errorf("could not create directory %q: %w", target, err)
+			}
+
+			return nil
+		}
+
+		if shadow, exists := existing[target]; exists {
+			if shadow {
+				log.Printf("WARN: file %q already exists and shadows a file from configuration", target)
+			}
+
+			return nil
+		}
+
+		err := os.Symlink(p, target)
+		if err != nil {
+			return fmt.Errorf("failed to link %q: %w", target, err)
+		}
+
+		return nil
+	}
+
+	return filepath.WalkDir(conf, walker)
+}
+
+func main() {
+	emConfig := flag.String("em-config", "", "path to em-config dir")
+
+	flag.Parse()
+	log.Println("verifying current Eagle Mode configuration")
+
+	if *emConfig == "" {
+		log.Fatalf("Eagle Mode configuration must be given")
+	}
+
+	if !strings.HasPrefix(*emConfig, "/nix/store/") {
+		log.Fatalf("Eagle Mode configuration must be in Nix store")
+	}
+
+	dir, err := configDir()
+	if err != nil {
+		log.Fatalf("could not determine Eagle Mode config dir: %v", err)
+	}
+
+	currentFiles, err := cleanupConfig(*emConfig, dir)
+	if err != nil {
+		log.Fatalf("failed to remove stale symlinks: %v", err)
+	}
+
+	err = linkConfig(*emConfig, dir, currentFiles)
+	if err != nil {
+		log.Fatalf("failed to link new configuration: %v", err)
+	}
+
+	log.Println("Eagle Mode configuration updated")
+}

tvix/Cargo.toml

@@ -27,6 +27,8 @@ members = [
   "glue",
   "nar-bridge",
   "nix-compat",
+  "nix-compat-derive",
+  "nix-compat-derive-tests",
   "serde",
   "store",
   "tracing",
@@ -37,6 +39,128 @@ members = [
 # https://github.com/rust-lang/rust-clippy/issues/12281
 blocks_in_conditions = "allow"
 
+[workspace.dependencies]
+anyhow = "1.0.86"
+async-compression = "0.4.12"
+async-process = "2.2.4"
+async-stream = "0.3.5"
+async-tempfile = "0.4.0"
+axum = "0.7.5"
+# https://github.com/liufuyang/bigtable_rs/pull/86
+bigtable_rs = { git = "https://github.com/liufuyang/bigtable_rs", rev = "1818355a5373a5bc2c84287e3a4e3807154ac8ef" }
+bitflags = "2.6.0"
+blake3 = "1.5.4"
+bstr = "1.10.0"
+bytes = "1.7.1"
+clap = "4.5.16"
+codemap = "0.1.3"
+codemap-diagnostic = "0.1.2"
+count-write = "0.1.0"
+criterion = "0.5"
+data-encoding = "2.6.0"
+digest = "0.10.7"
+dirs = "4.0.0"
+ed25519 = "2.2.3"
+ed25519-dalek = "2.1.1"
+enum-primitive-derive = "0.3.0"
+erased-serde = "0.4.5"
+expect-test = "1.5.0"
+fastcdc = "3.1.0"
+fuse-backend-rs = "0.11.0"
+futures = "0.3.30"
+genawaiter = { version = "0.99.1", default-features = false }
+glob = "0.3.1"
+hex-literal = "0.4.1"
+http = "1.1.0"
+hyper-util = "0.1.7"
+indicatif = "0.17.8"
+itertools = "0.12.1"
+lazy_static = "1.5.0"
+lexical-core = "0.8.5"
+libc = "0.2.158"
+lru = "0.12.4"
+magic = "0.16.2"
+md-5 = "0.10.6"
+mimalloc = "0.1.43"
+nix = "0.27.1"
+nohash-hasher = "0.2.0"
+nom = "7.1.3"
+num-traits = "0.2.19"
+object_store = "0.10.2"
+opentelemetry = "0.24.0"
+opentelemetry-http = "0.13.0"
+opentelemetry-otlp = "0.17.0"
+opentelemetry_sdk = "0.24.1"
+os_str_bytes = "6.6"
+parking_lot = "0.12.3"
+path-clean = "0.1"
+petgraph = "0.6.5"
+pin-project = "1.1"
+pin-project-lite = "0.2.14"
+pretty_assertions = "1.4.0"
+proc-macro2 = "1.0.86"
+proptest = { version = "1.5.0", default-features = false }
+prost = "0.13.1"
+prost-build = "0.13.1"
+quote = "1.0.37"
+redb = "2.1.2"
+regex = "1.10.6"
+reqwest = { version = "0.12.7", default-features = false }
+reqwest-middleware = "0.3.3"
+reqwest-tracing = { version = "0.5.3", default-features = false }
+rnix = "0.11.0"
+rowan = "*"
+rstest = "0.19.0"
+rstest_reuse = "0.6.0"
+rustc-hash = "2.0.0"
+rustyline = "10.1.1"
+serde = "1.0.209"
+serde_json = "1.0"
+serde_qs = "0.12.0"
+serde_tagged = "0.3.0"
+serde_with = "3.9.0"
+sha1 = "0.10.6"
+sha2 = "0.10.8"
+sled = "0.34.7"
+smol_str = "0.2.2"
+tabwriter = "1.4"
+tempfile = "3.12.0"
+test-strategy = "0.2.1"
+thiserror = "1.0.63"
+threadpool = "1.8.1"
+tokio = "1.39.3"
+tokio-listener = "0.4.3"
+tokio-retry = "0.3.0"
+tokio-stream = "0.1.15"
+tokio-tar = "0.3.1"
+tokio-test = "0.4.4"
+tokio-util = "0.7.11"
+tonic = "0.12.2"
+tonic-build = "0.12.2"
+tonic-health = { version = "0.12.2", default-features = false }
+tonic-reflection = "0.12.2"
+tower = "0.4.13"
+tower-http = "0.5.2"
+tracing = "0.1.40"
+tracing-indicatif = "0.3.6"
+tracing-opentelemetry = "0.25.0"
+tracing-subscriber = "0.3.18"
+tracing-tracy = "0.11.2"
+trybuild = "1.0.99"
+url = "2.5.2"
+vhost = "0.6"
+vhost-user-backend = "0.8"
+virtio-bindings = "0.2.2"
+virtio-queue = "0.7"
+vm-memory = "0.10"
+vmm-sys-util = "0.11"
+vu128 = "1.1.0"
+walkdir = "2.5.0"
+# https://github.com/jneem/wu-manber/pull/1
+wu-manber = { git = "https://github.com/tvlfyi/wu-manber.git" }
+xattr = "1.3.1"
+zstd = "0.13.2"
+
 # Add a profile to all targets that enables release optimisations, but
 # retains debug symbols. This is great for use with
 # benchmarking/profiling tools.

tvix/README.md

@@ -61,7 +61,7 @@ This folder contains the following components:
 * `//tvix/castore` - subtree storage/transfer in a content-addressed fashion
 * `//tvix/cli` - preliminary REPL & CLI implementation for Tvix
 * `//tvix/eval` - an implementation of the Nix programming language
-* `//tvix/nar-bridge-go` - a HTTP webserver providing a Nix HTTP Binary Cache interface in front of a tvix-store
+* `//tvix/nar-bridge` - a HTTP webserver providing a Nix HTTP Binary Cache interface in front of a tvix-store
 * `//tvix/nix-compat` - a Rust library for compatibility with C++ Nix, features like encodings and hashing schemes and formats
 * `//tvix/serde` - a Rust library for using the Nix language for app configuration
 * `//tvix/store` - a "filesystem" linking Nix store paths and metadata with the content-addressed layer

tvix/boot/README.md

@@ -31,23 +31,37 @@ the `tvix` directory:
 export PATH=$PATH:$PWD/target/release-with-debug
 ```
 
-Secondly, configure tvix to use the local backend:
+Now, spin up tvix-daemon, connecting to some (local) backends:
 
 ```
-export BLOB_SERVICE_ADDR=sled://$PWD/blobs.sled
+tvix-store --otlp=false daemon \
+  --blob-service-addr=objectstore+file://$PWD/blobs \
+  --directory-service-addr=sled://$PWD/directories.sled \
+  --path-info-service-addr=sled://$PWD/pathinfo.sled &
+```
+
+Copy some data into tvix-store (we use `nar-bridge` for this for now):
+
+```
+mg run //tvix:nar-bridge -- --otlp=false &
+rm -Rf ~/.cache/nix; nix copy --to http://localhost:9000\?compression\=none $(mg build //third_party/nixpkgs:hello)
+pkill nar-bridge
+```
+
+By default, the `tvix-store virtiofs` command used in the `runVM` script
+connects to a running `tvix-store daemon` via gRPC - in which case you want to
+keep `tvix-store daemon` running.
+
+In case you want to have `tvix-store virtiofs` open the stores directly, kill
+`tvix-store daemon` too, and export the addresses from above:
+
+```
+pkill tvix-store
+export BLOB_SERVICE_ADDR=objectstore+file://$PWD/blobs
 export DIRECTORY_SERVICE_ADDR=sled://$PWD/directories.sled
 export PATH_INFO_SERVICE_ADDR=sled://$PWD/pathinfo.sled
 ```
 
-Potentially copy some data into tvix-store (via nar-bridge):
-
-```
-mg run //tvix:store -- daemon &
-$(mg build //tvix:nar-bridge-go)/bin/nar-bridge-http &
-rm -Rf ~/.cache/nix; nix copy --to http://localhost:9000\?compression\=none $(mg build //third_party/nixpkgs:hello)
-pkill nar-bridge-http; pkill tvix-store
-```
-
 #### Interactive shell
 Run the VM like this:
 
@@ -100,9 +114,12 @@ Hello, world!
 [    0.299422] reboot: Power down
 ```
 
-#### Execute a NixOS system closure
+#### Boot a NixOS system closure
-It's also possible to invoke a system closure. To do this, tvix-init honors the
+It's also possible to boot a system closure. To do this, tvix-init honors the
-init= cmdline option, and will switch_root to it.
+init= cmdline option, and will `switch_root` to it.
+
+Make sure to first copy that system closure into tvix-store,
+using a similar `nix copy` comamnd as above.
 
 
 ```

tvix/boot/default.nix

@@ -1,13 +1,16 @@
-{ depot, pkgs, ... }:
+{ lib, pkgs, ... }:
 
 rec {
   # A binary that sets up /nix/store from virtiofs, lists all store paths, and
   # powers off the machine.
-  tvix-init = depot.nix.buildGo.program {
+  tvix-init = pkgs.buildGoModule rec {
     name = "tvix-init";
-    srcs = [
+    src = lib.fileset.toSource {
-      ./tvix-init.go
+      root = ./.;
-    ];
+      fileset = ./tvix-init.go;
+    };
+    vendorHash = null;
+    postPatch = "go mod init ${name}";
   };
 
   # A kernel with virtiofs support baked in

tvix/boot/tests/default.nix

@@ -65,8 +65,8 @@ let
               --otlp=false \
               daemon -l $PWD/tvix-store.sock &
 
-          # Wait for the socket to be created.
+          # Wait for the service to report healthy.
-          while [ ! -e $PWD/tvix-store.sock ]; do sleep 1; done
+          timeout 22 sh -c "until ${pkgs.ip2unix}/bin/ip2unix -r out,path=$PWD/tvix-store.sock ${pkgs.grpc-health-check}/bin/grpc-health-check --address 127.0.0.1 --port 8080; do sleep 1; done"
 
           # Export env vars so that subsequent tvix-store commands will talk to
           # our tvix-store daemon over the unix socket.
@@ -89,8 +89,8 @@ let
             --otlp=false \
             -l $PWD/nar-bridge.sock &
 
-          # Wait for the socket to be created.
+          # Wait for nar-bridge to report healthy.
-          while [ ! -e $PWD/nar-bridge.sock ]; do sleep 1; done
+          timeout 22 sh -c "until ${pkgs.curl}/bin/curl -s --unix-socket $PWD/nar-bridge.sock http:///nix-binary-cache; do sleep 1; done"
 
           # Upload. We can't use nix copy --to http://…, as it wants access to the nix db.
           # However, we can use mkBinaryCache to assemble .narinfo and .nar.xz to upload,
@@ -119,14 +119,20 @@ let
           grep "${assertVMOutput}" output.txt
         '';
         requiredSystemFeatures = [ "kvm" ];
+        # HACK: The boot tests are sometimes flaky, and we don't want them to
+        # periodically fail other build. Have Buildkite auto-retry them 2 times
+        # on failure.
+        # Logs for individual failures are still available, so it won't hinder
+        # flakiness debuggability.
+        meta.ci.buildkiteExtraStepArgs = {
+          retry.automatic = true;
+        };
       } // lib.optionalAttrs (isClosure && !useNarBridge) {
         __structuredAttrs = true;
         exportReferencesGraph.closure = [ path ];
       });
 
-  systemFor = sys: (depot.ops.nixos.nixosFor sys).system;
+  testSystem = (pkgs.nixos {
-
-  testSystem = systemFor ({ modulesPath, pkgs, ... }: {
     # Set some options necessary to evaluate.
     boot.loader.systemd-boot.enable = true;
     # TODO: figure out how to disable this without causing eval to fail
@@ -146,7 +152,10 @@ let
 
     # Don't warn about stateVersion.
     system.stateVersion = "24.05";
-  });
+
+    # Speed-up evaluation and building.
+    documentation.enable = lib.mkForce false;
+  }).config.system.build.toplevel;
 
 in
 depot.nix.readTree.drvTargets
@@ -157,8 +166,8 @@ depot.nix.readTree.drvTargets
   });
   docs-persistent = (mkBootTest {
     blobServiceAddr = "objectstore+file:///build/blobs";
-    directoryServiceAddr = "sled:///build/directories.sled";
+    directoryServiceAddr = "redb:///build/directories.redb";
-    pathInfoServiceAddr = "sled:///build/pathinfo.sled";
+    pathInfoServiceAddr = "redb:///build/pathinfo.redb";
     path = ../../docs;
     importPathName = "docs";
   });
@@ -171,6 +180,8 @@ depot.nix.readTree.drvTargets
 
   closure-nixos = (mkBootTest {
     blobServiceAddr = "objectstore+file:///build/blobs";
+    pathInfoServiceAddr = "redb:///build/pathinfo.redb";
+    directoryServiceAddr = "redb:///build/directories.redb";
     path = testSystem;
     isClosure = true;
     vmCmdline = "init=${testSystem}/init panic=-1"; # reboot immediately on panic

tvix/build-go/build.pb.go

@@ -3,7 +3,7 @@
 
 // Code generated by protoc-gen-go. DO NOT EDIT.
 // versions:
-// 	protoc-gen-go v1.34.1
+// 	protoc-gen-go v1.34.2
 // 	protoc        (unknown)
 // source: tvix/build/protos/build.proto
 
@@ -66,8 +66,8 @@ type BuildRequest struct {
 
 	// The list of all root nodes that should be visible in `inputs_dir` at the
 	// time of the build.
-	// As root nodes are content-addressed, no additional signatures are needed
+	// As all references are content-addressed, no additional signatures are
-	// to substitute / make these available in the build environment.
+	// needed to substitute / make these available in the build environment.
 	// Inputs MUST be sorted by their names.
 	Inputs []*castore_go.Node `protobuf:"bytes,1,rep,name=inputs,proto3" json:"inputs,omitempty"`
 	// The command (and its args) executed as the build script.
@@ -560,7 +560,7 @@ func file_tvix_build_protos_build_proto_rawDescGZIP() []byte {
 }
 
 var file_tvix_build_protos_build_proto_msgTypes = make([]protoimpl.MessageInfo, 5)
-var file_tvix_build_protos_build_proto_goTypes = []interface{}{
+var file_tvix_build_protos_build_proto_goTypes = []any{
 	(*BuildRequest)(nil),                  // 0: tvix.build.v1.BuildRequest
 	(*Build)(nil),                         // 1: tvix.build.v1.Build
 	(*BuildRequest_EnvVar)(nil),           // 2: tvix.build.v1.BuildRequest.EnvVar
@@ -588,7 +588,7 @@ func file_tvix_build_protos_build_proto_init() {
 		return
 	}
 	if !protoimpl.UnsafeEnabled {
-		file_tvix_build_protos_build_proto_msgTypes[0].Exporter = func(v interface{}, i int) interface{} {
+		file_tvix_build_protos_build_proto_msgTypes[0].Exporter = func(v any, i int) any {
 			switch v := v.(*BuildRequest); i {
 			case 0:
 				return &v.state
@@ -600,7 +600,7 @@ func file_tvix_build_protos_build_proto_init() {
 				return nil
 			}
 		}
-		file_tvix_build_protos_build_proto_msgTypes[1].Exporter = func(v interface{}, i int) interface{} {
+		file_tvix_build_protos_build_proto_msgTypes[1].Exporter = func(v any, i int) any {
 			switch v := v.(*Build); i {
 			case 0:
 				return &v.state
@@ -612,7 +612,7 @@ func file_tvix_build_protos_build_proto_init() {
 				return nil
 			}
 		}
-		file_tvix_build_protos_build_proto_msgTypes[2].Exporter = func(v interface{}, i int) interface{} {
+		file_tvix_build_protos_build_proto_msgTypes[2].Exporter = func(v any, i int) any {
 			switch v := v.(*BuildRequest_EnvVar); i {
 			case 0:
 				return &v.state
@@ -624,7 +624,7 @@ func file_tvix_build_protos_build_proto_init() {
 				return nil
 			}
 		}
-		file_tvix_build_protos_build_proto_msgTypes[3].Exporter = func(v interface{}, i int) interface{} {
+		file_tvix_build_protos_build_proto_msgTypes[3].Exporter = func(v any, i int) any {
 			switch v := v.(*BuildRequest_BuildConstraints); i {
 			case 0:
 				return &v.state
@@ -636,7 +636,7 @@ func file_tvix_build_protos_build_proto_init() {
 				return nil
 			}
 		}
-		file_tvix_build_protos_build_proto_msgTypes[4].Exporter = func(v interface{}, i int) interface{} {
+		file_tvix_build_protos_build_proto_msgTypes[4].Exporter = func(v any, i int) any {
 			switch v := v.(*BuildRequest_AdditionalFile); i {
 			case 0:
 				return &v.state

tvix/build-go/rpc_build.pb.go

@@ -3,7 +3,7 @@
 
 // Code generated by protoc-gen-go. DO NOT EDIT.
 // versions:
-// 	protoc-gen-go v1.34.1
+// 	protoc-gen-go v1.34.2
 // 	protoc        (unknown)
 // source: tvix/build/protos/rpc_build.proto
 
@@ -40,7 +40,7 @@ var file_tvix_build_protos_rpc_build_proto_rawDesc = []byte{
 	0x69, 0x6c, 0x64, 0x76, 0x31, 0x62, 0x06, 0x70, 0x72, 0x6f, 0x74, 0x6f, 0x33,
 }
 
-var file_tvix_build_protos_rpc_build_proto_goTypes = []interface{}{
+var file_tvix_build_protos_rpc_build_proto_goTypes = []any{
 	(*BuildRequest)(nil), // 0: tvix.build.v1.BuildRequest
 	(*Build)(nil),        // 1: tvix.build.v1.Build
 }

tvix/build/Cargo.toml

@@ -4,33 +4,31 @@ version = "0.1.0"
 edition = "2021"
 
 [dependencies]
-bytes = "1.4.0"
+bytes = { workspace = true }
-clap = { version = "4.0", features = ["derive", "env"] }
+clap = { workspace = true, features = ["derive", "env"] }
-itertools = "0.12.0"
+itertools = { workspace = true }
-prost = "0.13.1"
+prost = { workspace = true }
-thiserror = "1.0.56"
+thiserror = { workspace = true }
-tokio = { version = "1.32.0" }
+tokio = { workspace = true }
-tokio-listener = { version = "0.4.1", features = [ "tonic012" ] }
+tokio-listener = { workspace = true, features = ["tonic012"] }
-tonic = { version = "0.12.0", features = ["tls", "tls-roots"] }
+tonic = { workspace = true, features = ["tls", "tls-roots"] }
 tvix-castore = { path = "../castore" }
 tvix-tracing = { path = "../tracing" }
-tracing = "0.1.40"
+tracing = { workspace = true }
-url = "2.4.0"
+url = { workspace = true }
-
+mimalloc = { workspace = true }
-[dependencies.tonic-reflection]
+tonic-reflection = { workspace = true, optional = true }
-optional = true
-version = "0.12.0"
 
 [build-dependencies]
-prost-build = "0.13.1"
+prost-build = { workspace = true }
-tonic-build = "0.12.0"
+tonic-build = { workspace = true }
 
 [features]
 default = []
 tonic-reflection = ["dep:tonic-reflection", "tvix-castore/tonic-reflection"]
 
 [dev-dependencies]
-rstest = "0.19.0"
+rstest = { workspace = true }
 
 [lints]
 workspace = true

tvix/build/build.rs

@@ -20,15 +20,15 @@ fn main() -> Result<()> {
         .extern_path(".tvix.castore.v1", "::tvix_castore::proto")
         .compile(
             &[
-                "tvix/build/protos/build.proto",
+                "build/protos/build.proto",
-                "tvix/build/protos/rpc_build.proto",
+                "build/protos/rpc_build.proto",
             ],
             // If we are in running `cargo build` manually, using `../..` works fine,
             // but in case we run inside a nix build, we need to instead point PROTO_ROOT
-            // to a sparseTree containing that structure.
+            // to a custom tree containing that structure.
             &[match std::env::var_os("PROTO_ROOT") {
                 Some(proto_root) => proto_root.to_str().unwrap().to_owned(),
-                None => "../..".to_string(),
+                None => "..".to_string(),
             }],
         )
 }

tvix/build/default.nix

@@ -4,8 +4,8 @@
   runTests = true;
 }).overrideAttrs (old: rec {
   meta.ci.targets = lib.filter (x: lib.hasPrefix "with-features" x || x == "no-features") (lib.attrNames passthru);
-  passthru = depot.tvix.utils.mkFeaturePowerset {
+  passthru = old.passthru // (depot.tvix.utils.mkFeaturePowerset {
     inherit (old) crateName;
     features = [ "tonic-reflection" ];
-  };
+  });
 })

tvix/build/protos/build.proto

@@ -5,7 +5,7 @@ syntax = "proto3";
 
 package tvix.build.v1;
 
-import "tvix/castore/protos/castore.proto";
+import "castore/protos/castore.proto";
 
 option go_package = "code.tvl.fyi/tvix/build-go;buildv1";
 
@@ -47,8 +47,8 @@ option go_package = "code.tvl.fyi/tvix/build-go;buildv1";
 message BuildRequest {
   // The list of all root nodes that should be visible in `inputs_dir` at the
   // time of the build.
-  // As root nodes are content-addressed, no additional signatures are needed
+  // As all references are content-addressed, no additional signatures are
-  // to substitute / make these available in the build environment.
+  // needed to substitute / make these available in the build environment.
   // Inputs MUST be sorted by their names.
   repeated tvix.castore.v1.Node inputs = 1;
 

tvix/build/protos/default.nix

@@ -1,17 +1,12 @@
-{ depot, pkgs, ... }:
+{ depot, pkgs, lib, ... }:
 let
-  protos = depot.nix.sparseTree {
+  protos = lib.sourceByRegex depot.path.origSrc [
-    name = "build-protos";
+    "buf.yaml"
-    root = depot.path.origSrc;
+    "buf.gen.yaml"
-    paths = [
+    # We need to include castore.proto (only), as it's referred.
-      # We need to include castore.proto (only), as it's referred.
+    "^tvix(/castore(/protos(/castore\.proto)?)?)?$"
-      ../../castore/protos/castore.proto
+    "^tvix(/build(/protos(/.*\.proto)?)?)?$"
-      ./build.proto
+  ];
-      ./rpc_build.proto
-      ../../../buf.yaml
-      ../../../buf.gen.yaml
-    ];
-  };
 in
 depot.nix.readTree.drvTargets {
   inherit protos;

tvix/build/protos/rpc_build.proto

@@ -4,7 +4,7 @@ syntax = "proto3";
 
 package tvix.build.v1;
 
-import "tvix/build/protos/build.proto";
+import "build/protos/build.proto";
 
 option go_package = "code.tvl.fyi/tvix/build-go;buildv1";
 

tvix/build/src/bin/tvix-build.rs

@@ -17,6 +17,11 @@ use tvix_build::proto::FILE_DESCRIPTOR_SET;
 #[cfg(feature = "tonic-reflection")]
 use tvix_castore::proto::FILE_DESCRIPTOR_SET as CASTORE_FILE_DESCRIPTOR_SET;
 
+use mimalloc::MiMalloc;
+
+#[global_allocator]
+static GLOBAL: MiMalloc = MiMalloc;
+
 #[derive(Parser)]
 #[command(author, version, about, long_about = None)]
 struct Cli {
@@ -85,11 +90,18 @@ async fn main() -> Result<(), Box<dyn std::error::Error + Send + Sync>> {
 
             #[cfg(feature = "tonic-reflection")]
             {
-                let reflection_svc = tonic_reflection::server::Builder::configure()
+                router = router.add_service(
-                    .register_encoded_file_descriptor_set(CASTORE_FILE_DESCRIPTOR_SET)
+                    tonic_reflection::server::Builder::configure()
-                    .register_encoded_file_descriptor_set(FILE_DESCRIPTOR_SET)
+                        .register_encoded_file_descriptor_set(CASTORE_FILE_DESCRIPTOR_SET)
-                    .build()?;
+                        .register_encoded_file_descriptor_set(FILE_DESCRIPTOR_SET)
-                router = router.add_service(reflection_svc);
+                        .build_v1alpha()?,
+                );
+                router = router.add_service(
+                    tonic_reflection::server::Builder::configure()
+                        .register_encoded_file_descriptor_set(CASTORE_FILE_DESCRIPTOR_SET)
+                        .register_encoded_file_descriptor_set(FILE_DESCRIPTOR_SET)
+                        .build_v1()?,
+                );
             }
 
             info!(listen_address=%listen_address, "listening");

tvix/build/src/proto/mod.rs

@@ -1,7 +1,7 @@
 use std::path::{Path, PathBuf};
 
 use itertools::Itertools;
-use tvix_castore::proto::{NamedNode, ValidateNodeError};
+use tvix_castore::DirectoryError;
 
 mod grpc_buildservice_wrapper;
 
@@ -19,7 +19,7 @@ pub const FILE_DESCRIPTOR_SET: &[u8] = tonic::include_file_descriptor_set!("tvix
 #[derive(Debug, thiserror::Error)]
 pub enum ValidateBuildRequestError {
     #[error("invalid input node at position {0}: {1}")]
-    InvalidInputNode(usize, ValidateNodeError),
+    InvalidInputNode(usize, DirectoryError),
 
     #[error("input nodes are not sorted by name")]
     InputNodesNotSorted,
@@ -123,20 +123,21 @@ impl BuildRequest {
     /// and all restrictions around paths themselves (relative, clean, …) need
     // to be fulfilled.
     pub fn validate(&self) -> Result<(), ValidateBuildRequestError> {
-        // validate all input nodes
+        // validate names. Make sure they're sorted
-        for (i, n) in self.inputs.iter().enumerate() {
-            // ensure the input node itself is valid
-            n.validate()
-                .map_err(|e| ValidateBuildRequestError::InvalidInputNode(i, e))?;
-        }
 
-        // now we can look at the names, and make sure they're sorted.
+        let mut last_name: bytes::Bytes = "".into();
-        if !is_sorted(
+        for (i, node) in self.inputs.iter().enumerate() {
-            self.inputs
+            // TODO(flokli): store result somewhere
-                .iter()
+            let (name, _node) = node
-                .map(|e| e.node.as_ref().unwrap().get_name()),
+                .clone()
-        ) {
+                .into_name_and_node()
-            Err(ValidateBuildRequestError::InputNodesNotSorted)?
+                .map_err(|e| ValidateBuildRequestError::InvalidInputNode(i, e))?;
+
+            if name.as_ref() <= last_name.as_ref() {
+                return Err(ValidateBuildRequestError::InputNodesNotSorted);
+            } else {
+                last_name = name.into()
+            }
         }
 
         // validate working_dir

tvix/castore-go/castore.pb.go

@@ -3,7 +3,7 @@
 
 // Code generated by protoc-gen-go. DO NOT EDIT.
 // versions:
-// 	protoc-gen-go v1.34.1
+// 	protoc-gen-go v1.34.2
 // 	protoc        (unknown)
 // source: tvix/castore/protos/castore.proto
 
@@ -466,7 +466,7 @@ func file_tvix_castore_protos_castore_proto_rawDescGZIP() []byte {
 }
 
 var file_tvix_castore_protos_castore_proto_msgTypes = make([]protoimpl.MessageInfo, 5)
-var file_tvix_castore_protos_castore_proto_goTypes = []interface{}{
+var file_tvix_castore_protos_castore_proto_goTypes = []any{
 	(*Directory)(nil),     // 0: tvix.castore.v1.Directory
 	(*DirectoryNode)(nil), // 1: tvix.castore.v1.DirectoryNode
 	(*FileNode)(nil),      // 2: tvix.castore.v1.FileNode
@@ -493,7 +493,7 @@ func file_tvix_castore_protos_castore_proto_init() {
 		return
 	}
 	if !protoimpl.UnsafeEnabled {
-		file_tvix_castore_protos_castore_proto_msgTypes[0].Exporter = func(v interface{}, i int) interface{} {
+		file_tvix_castore_protos_castore_proto_msgTypes[0].Exporter = func(v any, i int) any {
 			switch v := v.(*Directory); i {
 			case 0:
 				return &v.state
@@ -505,7 +505,7 @@ func file_tvix_castore_protos_castore_proto_init() {
 				return nil
 			}
 		}
-		file_tvix_castore_protos_castore_proto_msgTypes[1].Exporter = func(v interface{}, i int) interface{} {
+		file_tvix_castore_protos_castore_proto_msgTypes[1].Exporter = func(v any, i int) any {
 			switch v := v.(*DirectoryNode); i {
 			case 0:
 				return &v.state
@@ -517,7 +517,7 @@ func file_tvix_castore_protos_castore_proto_init() {
 				return nil
 			}
 		}
-		file_tvix_castore_protos_castore_proto_msgTypes[2].Exporter = func(v interface{}, i int) interface{} {
+		file_tvix_castore_protos_castore_proto_msgTypes[2].Exporter = func(v any, i int) any {
 			switch v := v.(*FileNode); i {
 			case 0:
 				return &v.state
@@ -529,7 +529,7 @@ func file_tvix_castore_protos_castore_proto_init() {
 				return nil
 			}
 		}
-		file_tvix_castore_protos_castore_proto_msgTypes[3].Exporter = func(v interface{}, i int) interface{} {
+		file_tvix_castore_protos_castore_proto_msgTypes[3].Exporter = func(v any, i int) any {
 			switch v := v.(*SymlinkNode); i {
 			case 0:
 				return &v.state
@@ -541,7 +541,7 @@ func file_tvix_castore_protos_castore_proto_init() {
 				return nil
 			}
 		}
-		file_tvix_castore_protos_castore_proto_msgTypes[4].Exporter = func(v interface{}, i int) interface{} {
+		file_tvix_castore_protos_castore_proto_msgTypes[4].Exporter = func(v any, i int) any {
 			switch v := v.(*Node); i {
 			case 0:
 				return &v.state
@@ -554,7 +554,7 @@ func file_tvix_castore_protos_castore_proto_init() {
 			}
 		}
 	}
-	file_tvix_castore_protos_castore_proto_msgTypes[4].OneofWrappers = []interface{}{
+	file_tvix_castore_protos_castore_proto_msgTypes[4].OneofWrappers = []any{
 		(*Node_Directory)(nil),
 		(*Node_File)(nil),
 		(*Node_Symlink)(nil),

tvix/castore-go/rpc_blobstore.pb.go

@@ -3,7 +3,7 @@
 
 // Code generated by protoc-gen-go. DO NOT EDIT.
 // versions:
-// 	protoc-gen-go v1.34.1
+// 	protoc-gen-go v1.34.2
 // 	protoc        (unknown)
 // source: tvix/castore/protos/rpc_blobstore.proto
 
@@ -415,7 +415,7 @@ func file_tvix_castore_protos_rpc_blobstore_proto_rawDescGZIP() []byte {
 }
 
 var file_tvix_castore_protos_rpc_blobstore_proto_msgTypes = make([]protoimpl.MessageInfo, 6)
-var file_tvix_castore_protos_rpc_blobstore_proto_goTypes = []interface{}{
+var file_tvix_castore_protos_rpc_blobstore_proto_goTypes = []any{
 	(*StatBlobRequest)(nil),            // 0: tvix.castore.v1.StatBlobRequest
 	(*StatBlobResponse)(nil),           // 1: tvix.castore.v1.StatBlobResponse
 	(*ReadBlobRequest)(nil),            // 2: tvix.castore.v1.ReadBlobRequest
@@ -444,7 +444,7 @@ func file_tvix_castore_protos_rpc_blobstore_proto_init() {
 		return
 	}
 	if !protoimpl.UnsafeEnabled {
-		file_tvix_castore_protos_rpc_blobstore_proto_msgTypes[0].Exporter = func(v interface{}, i int) interface{} {
+		file_tvix_castore_protos_rpc_blobstore_proto_msgTypes[0].Exporter = func(v any, i int) any {
 			switch v := v.(*StatBlobRequest); i {
 			case 0:
 				return &v.state
@@ -456,7 +456,7 @@ func file_tvix_castore_protos_rpc_blobstore_proto_init() {
 				return nil
 			}
 		}
-		file_tvix_castore_protos_rpc_blobstore_proto_msgTypes[1].Exporter = func(v interface{}, i int) interface{} {
+		file_tvix_castore_protos_rpc_blobstore_proto_msgTypes[1].Exporter = func(v any, i int) any {
 			switch v := v.(*StatBlobResponse); i {
 			case 0:
 				return &v.state
@@ -468,7 +468,7 @@ func file_tvix_castore_protos_rpc_blobstore_proto_init() {
 				return nil
 			}
 		}
-		file_tvix_castore_protos_rpc_blobstore_proto_msgTypes[2].Exporter = func(v interface{}, i int) interface{} {
+		file_tvix_castore_protos_rpc_blobstore_proto_msgTypes[2].Exporter = func(v any, i int) any {
 			switch v := v.(*ReadBlobRequest); i {
 			case 0:
 				return &v.state
@@ -480,7 +480,7 @@ func file_tvix_castore_protos_rpc_blobstore_proto_init() {
 				return nil
 			}
 		}
-		file_tvix_castore_protos_rpc_blobstore_proto_msgTypes[3].Exporter = func(v interface{}, i int) interface{} {
+		file_tvix_castore_protos_rpc_blobstore_proto_msgTypes[3].Exporter = func(v any, i int) any {
 			switch v := v.(*BlobChunk); i {
 			case 0:
 				return &v.state
@@ -492,7 +492,7 @@ func file_tvix_castore_protos_rpc_blobstore_proto_init() {
 				return nil
 			}
 		}
-		file_tvix_castore_protos_rpc_blobstore_proto_msgTypes[4].Exporter = func(v interface{}, i int) interface{} {
+		file_tvix_castore_protos_rpc_blobstore_proto_msgTypes[4].Exporter = func(v any, i int) any {
 			switch v := v.(*PutBlobResponse); i {
 			case 0:
 				return &v.state
@@ -504,7 +504,7 @@ func file_tvix_castore_protos_rpc_blobstore_proto_init() {
 				return nil
 			}
 		}
-		file_tvix_castore_protos_rpc_blobstore_proto_msgTypes[5].Exporter = func(v interface{}, i int) interface{} {
+		file_tvix_castore_protos_rpc_blobstore_proto_msgTypes[5].Exporter = func(v any, i int) any {
 			switch v := v.(*StatBlobResponse_ChunkMeta); i {
 			case 0:
 				return &v.state

tvix/castore-go/rpc_directory.pb.go

@@ -3,7 +3,7 @@
 
 // Code generated by protoc-gen-go. DO NOT EDIT.
 // versions:
-// 	protoc-gen-go v1.34.1
+// 	protoc-gen-go v1.34.2
 // 	protoc        (unknown)
 // source: tvix/castore/protos/rpc_directory.proto
 
@@ -199,7 +199,7 @@ func file_tvix_castore_protos_rpc_directory_proto_rawDescGZIP() []byte {
 }
 
 var file_tvix_castore_protos_rpc_directory_proto_msgTypes = make([]protoimpl.MessageInfo, 2)
-var file_tvix_castore_protos_rpc_directory_proto_goTypes = []interface{}{
+var file_tvix_castore_protos_rpc_directory_proto_goTypes = []any{
 	(*GetDirectoryRequest)(nil),  // 0: tvix.castore.v1.GetDirectoryRequest
 	(*PutDirectoryResponse)(nil), // 1: tvix.castore.v1.PutDirectoryResponse
 	(*Directory)(nil),            // 2: tvix.castore.v1.Directory
@@ -223,7 +223,7 @@ func file_tvix_castore_protos_rpc_directory_proto_init() {
 	}
 	file_tvix_castore_protos_castore_proto_init()
 	if !protoimpl.UnsafeEnabled {
-		file_tvix_castore_protos_rpc_directory_proto_msgTypes[0].Exporter = func(v interface{}, i int) interface{} {
+		file_tvix_castore_protos_rpc_directory_proto_msgTypes[0].Exporter = func(v any, i int) any {
 			switch v := v.(*GetDirectoryRequest); i {
 			case 0:
 				return &v.state
@@ -235,7 +235,7 @@ func file_tvix_castore_protos_rpc_directory_proto_init() {
 				return nil
 			}
 		}
-		file_tvix_castore_protos_rpc_directory_proto_msgTypes[1].Exporter = func(v interface{}, i int) interface{} {
+		file_tvix_castore_protos_rpc_directory_proto_msgTypes[1].Exporter = func(v any, i int) any {
 			switch v := v.(*PutDirectoryResponse); i {
 			case 0:
 				return &v.state
@@ -248,7 +248,7 @@ func file_tvix_castore_protos_rpc_directory_proto_init() {
 			}
 		}
 	}
-	file_tvix_castore_protos_rpc_directory_proto_msgTypes[0].OneofWrappers = []interface{}{
+	file_tvix_castore_protos_rpc_directory_proto_msgTypes[0].OneofWrappers = []any{
 		(*GetDirectoryRequest_Digest)(nil),
 	}
 	type x struct{}

tvix/castore/Cargo.toml

@@ -4,100 +4,68 @@ version = "0.1.0"
 edition = "2021"
 
 [dependencies]
-async-compression = { version = "0.4.9", features = ["tokio", "zstd"]}
+async-compression = { workspace = true, features = ["tokio", "zstd"] }
-async-stream = "0.3.5"
+async-stream = { workspace = true }
-async-tempfile = "0.4.0"
+async-tempfile = { workspace = true }
-blake3 = { version = "1.3.1", features = ["rayon", "std", "traits-preview"] }
+blake3 = { workspace = true, features = ["rayon", "std", "traits-preview"] }
-bstr = "1.6.0"
+bstr = { workspace = true }
-bytes = "1.4.0"
+bytes = { workspace = true }
-data-encoding = "2.6.0"
+data-encoding = { workspace = true }
-digest = "0.10.7"
+digest = { workspace = true }
-fastcdc = { version = "3.1.0", features = ["tokio"] }
+fastcdc = { workspace = true, features = ["tokio"] }
-futures = "0.3.30"
+futures = { workspace = true }
-lazy_static = "1.4.0"
+lazy_static = { workspace = true }
-object_store = { version = "0.10.1", features = ["http"] }
+object_store = { workspace = true, features = ["http"] }
-parking_lot = "0.12.1"
+parking_lot = { workspace = true }
-pin-project-lite = "0.2.13"
+pin-project-lite = { workspace = true }
-prost = "0.13.1"
+prost = { workspace = true }
-sled = { version = "0.34.7" }
+sled = { workspace = true }
-thiserror = "1.0.38"
+thiserror = { workspace = true }
-tokio-stream = { version = "0.1.14", features = ["fs", "net"] }
+tokio-stream = { workspace = true, features = ["fs", "net"] }
-tokio-util = { version = "0.7.9", features = ["io", "io-util", "codec"] }
+tokio-util = { workspace = true, features = ["io", "io-util", "codec"] }
-tokio-tar = "0.3.1"
+tokio-tar = { workspace = true }
-tokio = { version = "1.32.0", features = ["fs", "macros", "net", "rt", "rt-multi-thread", "signal"] }
+tokio = { workspace = true, features = ["fs", "macros", "net", "rt", "rt-multi-thread", "signal"] }
-tonic = "0.12.0"
+tonic = { workspace = true }
-tower = "0.4.13"
+tower = { workspace = true }
-tracing = "0.1.37"
+tracing = { workspace = true }
-tracing-indicatif = "0.3.6"
+tracing-indicatif = { workspace = true }
 tvix-tracing = { path = "../tracing", features = ["tonic"] }
-url = "2.4.0"
+url = { workspace = true }
-walkdir = "2.4.0"
+walkdir = { workspace = true }
-zstd = "0.13.0"
+zstd = { workspace = true }
-serde = { version = "1.0.197", features = [ "derive" ] }
+serde = { workspace = true, features = ["derive"] }
-serde_with = "3.7.0"
+serde_with = { workspace = true }
-serde_qs = "0.12.0"
+serde_qs = { workspace = true }
-petgraph = "0.6.4"
+petgraph = { workspace = true }
-erased-serde = "0.4.5"
+erased-serde = { workspace = true }
-serde_tagged = "0.3.0"
+serde_tagged = { workspace = true }
-hyper-util = "0.1.6"
+hyper-util = { workspace = true }
-
+redb = { workspace = true }
-[dependencies.bigtable_rs]
+bigtable_rs = { workspace = true, optional = true }
-optional = true
+fuse-backend-rs = { workspace = true, optional = true }
-version = "0.2.10"
+libc = { workspace = true, optional = true }
-
+threadpool = { workspace = true, optional = true }
-[dependencies.fuse-backend-rs]
+tonic-reflection = { workspace = true, optional = true }
-optional = true
+vhost = { workspace = true, optional = true }
-version = "0.11.0"
+vhost-user-backend = { workspace = true, optional = true }
-
+virtio-queue = { workspace = true, optional = true }
-[dependencies.libc]
+vm-memory = { workspace = true, optional = true }
-optional = true
+vmm-sys-util = { workspace = true, optional = true }
-version = "0.2.144"
+virtio-bindings = { workspace = true, optional = true }
-
-[dependencies.threadpool]
-version = "1.8.1"
-optional = true
-
-[dependencies.tonic-reflection]
-optional = true
-version = "0.12.0"
-
-[dependencies.vhost]
-optional = true
-version = "0.6"
-
-[dependencies.vhost-user-backend]
-optional = true
-version = "0.8"
-
-[dependencies.virtio-queue]
-optional = true
-version = "0.7"
-
-[dependencies.vm-memory]
-optional = true
-version = "0.10"
-
-[dependencies.vmm-sys-util]
-optional = true
-version = "0.11"
-
-[dependencies.virtio-bindings]
-optional = true
-version = "0.2.1"
 
 [build-dependencies]
-prost-build = "0.13.1"
+prost-build = { workspace = true }
-tonic-build = "0.12.0"
+tonic-build = { workspace = true }
 
 [dev-dependencies]
-async-process = "2.1.0"
+async-process = { workspace = true }
-rstest = "0.19.0"
+rstest = { workspace = true }
-tempfile = "3.3.0"
+tempfile = { workspace = true }
-tokio-retry = "0.3.0"
+tokio-retry = { workspace = true }
-hex-literal = "0.4.1"
+hex-literal = { workspace = true }
-rstest_reuse = "0.6.0"
+rstest_reuse = { workspace = true }
-xattr = "1.3.1"
+xattr = { workspace = true }
-serde_json = "*"
+serde_json = { workspace = true }
 
 [features]
 default = ["cloud"]
@@ -125,6 +93,3 @@ tonic-reflection = ["dep:tonic-reflection"]
 # Requires the following packages in $PATH:
 # cbtemulator, google-cloud-bigtable-tool
 integration = []
-
-[lints]
-workspace = true

tvix/castore/build.rs

@@ -20,16 +20,16 @@ fn main() -> Result<()> {
         .type_attribute(".", "#[derive(Eq, Hash)]")
         .compile(
             &[
-                "tvix/castore/protos/castore.proto",
+                "castore/protos/castore.proto",
-                "tvix/castore/protos/rpc_blobstore.proto",
+                "castore/protos/rpc_blobstore.proto",
-                "tvix/castore/protos/rpc_directory.proto",
+                "castore/protos/rpc_directory.proto",
             ],
             // If we are in running `cargo build` manually, using `../..` works fine,
             // but in case we run inside a nix build, we need to instead point PROTO_ROOT
-            // to a sparseTree containing that structure.
+            // to a custom tree containing that structure.
             &[match std::env::var_os("PROTO_ROOT") {
                 Some(proto_root) => proto_root.to_str().unwrap().to_owned(),
-                None => "../..".to_string(),
+                None => "..".to_string(),
             }],
         )
 }

tvix/castore/protos/default.nix

@@ -1,16 +1,10 @@
-{ depot, pkgs, ... }:
+{ depot, pkgs, lib, ... }:
 let
-  protos = depot.nix.sparseTree {
+  protos = lib.sourceByRegex depot.path.origSrc [
-    name = "castore-protos";
+    "buf.yaml"
-    root = depot.path.origSrc;
+    "buf.gen.yaml"
-    paths = [
+    "^tvix(/castore(/protos(/.*\.proto)?)?)?$"
-      ./castore.proto
+  ];
-      ./rpc_blobstore.proto
-      ./rpc_directory.proto
-      ../../../buf.yaml
-      ../../../buf.gen.yaml
-    ];
-  };
 in
 depot.nix.readTree.drvTargets {
   inherit protos;

tvix/castore/protos/rpc_directory.proto

@@ -4,7 +4,7 @@ syntax = "proto3";
 
 package tvix.castore.v1;
 
-import "tvix/castore/protos/castore.proto";
+import "castore/protos/castore.proto";
 
 option go_package = "code.tvl.fyi/tvix/castore-go;castorev1";
 

tvix/castore/src/blobservice/combinator.rs

@@ -1,14 +1,12 @@
 use std::sync::Arc;
 
-use futures::{StreamExt, TryStreamExt};
-use tokio_util::io::{ReaderStream, StreamReader};
 use tonic::async_trait;
-use tracing::{instrument, warn};
+use tracing::instrument;
 
 use crate::composition::{CompositionContext, ServiceBuilder};
 use crate::{B3Digest, Error};
 
-use super::{naive_seeker::NaiveSeeker, BlobReader, BlobService, BlobWriter};
+use super::{BlobReader, BlobService, BlobWriter, ChunkedReader};
 
 /// Combinator for a BlobService, using a "local" and "remote" blobservice.
 /// Requests are tried in (and returned from) the local store first, only if
@@ -71,19 +69,16 @@ where
                     // otherwise, a chunked reader, which will always try the
                     // local backend first.
 
-                    // map Vec<ChunkMeta> to Vec<(B3Digest, u64)>
+                    let chunked_reader = ChunkedReader::from_chunks(
-                    let chunks: Vec<(B3Digest, u64)> = remote_chunks
+                        remote_chunks.into_iter().map(|chunk| {
-                        .into_iter()
-                        .map(|chunk_meta| {
                             (
-                                B3Digest::try_from(chunk_meta.digest)
+                                chunk.digest.try_into().expect("invalid b3 digest"),
-                                    .expect("invalid chunk digest"),
+                                chunk.size,
-                                chunk_meta.size,
                             )
-                        })
+                        }),
-                        .collect();
+                        Arc::new(self.clone()) as Arc<dyn BlobService>,
-
+                    );
-                    Ok(Some(make_chunked_reader(self.clone(), chunks)))
+                    Ok(Some(Box::new(chunked_reader)))
                 }
             }
         }
@@ -131,41 +126,3 @@ impl ServiceBuilder for CombinedBlobServiceConfig {
         }))
     }
 }
-
-fn make_chunked_reader<BS>(
-    // This must consume, as we can't retain references to blob_service,
-    // as it'd add a lifetime to BlobReader in general, which will get
-    // problematic in TvixStoreFs, which is using async move closures and cloning.
-    blob_service: BS,
-    // A list of b3 digests for individual chunks, and their sizes.
-    chunks: Vec<(B3Digest, u64)>,
-) -> Box<dyn BlobReader>
-where
-    BS: BlobService + Clone + 'static,
-{
-    // TODO: offset, verified streaming
-
-    // construct readers for each chunk
-    let blob_service = blob_service.clone();
-    let readers_stream = tokio_stream::iter(chunks).map(move |(digest, _)| {
-        let d = digest.to_owned();
-        let blob_service = blob_service.clone();
-        async move {
-            blob_service.open_read(&d.to_owned()).await?.ok_or_else(|| {
-                warn!(chunk.digest = %digest, "chunk not found");
-                std::io::Error::new(std::io::ErrorKind::NotFound, "chunk not found")
-            })
-        }
-    });
-
-    // convert the stream of readers to a stream of streams of byte chunks
-    let bytes_streams = readers_stream.then(|elem| async { elem.await.map(ReaderStream::new) });
-
-    // flatten into one stream of byte chunks
-    let bytes_stream = bytes_streams.try_flatten();
-
-    // convert into AsyncRead
-    let blob_reader = StreamReader::new(bytes_stream);
-
-    Box::new(NaiveSeeker::new(Box::pin(blob_reader)))
-}

tvix/castore/src/blobservice/mod.rs

@@ -11,7 +11,6 @@ mod combinator;
 mod from_addr;
 mod grpc;
 mod memory;
-mod naive_seeker;
 mod object_store;
 
 #[cfg(test)]

tvix/castore/src/blobservice/naive_seeker.rs

@@ -1,265 +0,0 @@
-use super::BlobReader;
-use futures::ready;
-use pin_project_lite::pin_project;
-use std::io;
-use std::task::Poll;
-use tokio::io::AsyncRead;
-use tracing::{debug, instrument, trace, warn};
-
-pin_project! {
-    /// This implements [tokio::io::AsyncSeek] for and [tokio::io::AsyncRead] by
-    /// simply skipping over some bytes, keeping track of the position.
-    /// It fails whenever you try to seek backwards.
-    ///
-    /// ## Pinning concerns:
-    ///
-    /// [NaiveSeeker] is itself pinned by callers, and we do not need to concern
-    /// ourselves regarding that.
-    ///
-    /// Though, its fields as per
-    /// <https://doc.rust-lang.org/std/pin/#pinning-is-not-structural-for-field>
-    /// can be pinned or unpinned.
-    ///
-    /// So we need to go over each field and choose our policy carefully.
-    ///
-    /// The obvious cases are the bookkeeping integers we keep in the structure,
-    /// those are private and not shared to anyone, we never build a
-    /// `Pin<&mut X>` out of them at any point, therefore, we can safely never
-    /// mark them as pinned. Of course, it is expected that no developer here
-    /// attempt to `pin!(self.pos)` to pin them because it makes no sense. If
-    /// they have to become pinned, they should be marked `#[pin]` and we need
-    /// to discuss it.
-    ///
-    /// So the bookkeeping integers are in the right state with respect to their
-    /// pinning status. The projection should offer direct access.
-    ///
-    /// On the `r` field, i.e. a `BufReader<R>`, given that
-    /// <https://docs.rs/tokio/latest/tokio/io/struct.BufReader.html#impl-Unpin-for-BufReader%3CR%3E>
-    /// is available, even a `Pin<&mut BufReader<R>>` can be safely moved.
-    ///
-    /// The only care we should have regards the internal reader itself, i.e.
-    /// the `R` instance, see that Tokio decided to `#[pin]` it too:
-    /// <https://docs.rs/tokio/latest/src/tokio/io/util/buf_reader.rs.html#29>
-    ///
-    /// In general, there's no `Unpin` instance for `R: tokio::io::AsyncRead`
-    /// (see <https://docs.rs/tokio/latest/tokio/io/trait.AsyncRead.html>).
-    ///
-    /// Therefore, we could keep it unpinned and pin it in every call site
-    /// whenever we need to call `poll_*` which can be confusing to the non-
-    /// expert developer and we have a fair share amount of situations where the
-    /// [BufReader] instance is naked, i.e. in its `&mut BufReader<R>`
-    /// form, this is annoying because it could lead to expose the naked `R`
-    /// internal instance somehow and would produce a risk of making it move
-    /// unexpectedly.
-    ///
-    /// We choose the path of the least resistance as we have no reason to have
-    /// access to the raw `BufReader<R>` instance, we just `#[pin]` it too and
-    /// enjoy its `poll_*` safe APIs and push the unpinning concerns to the
-    /// internal implementations themselves, which studied the question longer
-    /// than us.
-    pub struct NaiveSeeker<R: tokio::io::AsyncRead> {
-        #[pin]
-        r: tokio::io::BufReader<R>,
-        pos: u64,
-        bytes_to_skip: u64,
-    }
-}
-
-/// The buffer size used to discard data.
-const DISCARD_BUF_SIZE: usize = 4096;
-
-impl<R: tokio::io::AsyncRead> NaiveSeeker<R> {
-    pub fn new(r: R) -> Self {
-        NaiveSeeker {
-            r: tokio::io::BufReader::new(r),
-            pos: 0,
-            bytes_to_skip: 0,
-        }
-    }
-}
-
-impl<R: tokio::io::AsyncRead> tokio::io::AsyncRead for NaiveSeeker<R> {
-    #[instrument(level = "trace", skip_all)]
-    fn poll_read(
-        self: std::pin::Pin<&mut Self>,
-        cx: &mut std::task::Context<'_>,
-        buf: &mut tokio::io::ReadBuf<'_>,
-    ) -> Poll<std::io::Result<()>> {
-        // The amount of data read can be determined by the increase
-        // in the length of the slice returned by `ReadBuf::filled`.
-        let filled_before = buf.filled().len();
-
-        let this = self.project();
-        ready!(this.r.poll_read(cx, buf))?;
-
-        let bytes_read = buf.filled().len() - filled_before;
-        *this.pos += bytes_read as u64;
-
-        trace!(bytes_read = bytes_read, new_pos = this.pos, "poll_read");
-
-        Ok(()).into()
-    }
-}
-
-impl<R: tokio::io::AsyncRead> tokio::io::AsyncBufRead for NaiveSeeker<R> {
-    fn poll_fill_buf(
-        self: std::pin::Pin<&mut Self>,
-        cx: &mut std::task::Context<'_>,
-    ) -> Poll<io::Result<&[u8]>> {
-        self.project().r.poll_fill_buf(cx)
-    }
-
-    #[instrument(level = "trace", skip(self))]
-    fn consume(self: std::pin::Pin<&mut Self>, amt: usize) {
-        let this = self.project();
-        this.r.consume(amt);
-        *this.pos += amt as u64;
-
-        trace!(new_pos = this.pos, "consume");
-    }
-}
-
-impl<R: tokio::io::AsyncRead> tokio::io::AsyncSeek for NaiveSeeker<R> {
-    #[instrument(level="trace", skip(self), fields(inner_pos=%self.pos), err(Debug))]
-    fn start_seek(
-        self: std::pin::Pin<&mut Self>,
-        position: std::io::SeekFrom,
-    ) -> std::io::Result<()> {
-        let absolute_offset: u64 = match position {
-            io::SeekFrom::Start(start_offset) => {
-                if start_offset < self.pos {
-                    return Err(io::Error::new(
-                        io::ErrorKind::Unsupported,
-                        format!("can't seek backwards ({} -> {})", self.pos, start_offset),
-                    ));
-                } else {
-                    start_offset
-                }
-            }
-            // we don't know the total size, can't support this.
-            io::SeekFrom::End(_end_offset) => {
-                return Err(io::Error::new(
-                    io::ErrorKind::Unsupported,
-                    "can't seek from end",
-                ));
-            }
-            io::SeekFrom::Current(relative_offset) => {
-                if relative_offset < 0 {
-                    return Err(io::Error::new(
-                        io::ErrorKind::Unsupported,
-                        "can't seek backwards relative to current position",
-                    ));
-                } else {
-                    self.pos + relative_offset as u64
-                }
-            }
-        };
-
-        // we already know absolute_offset is >= self.pos
-        debug_assert!(
-            absolute_offset >= self.pos,
-            "absolute_offset {} must be >= self.pos {}",
-            absolute_offset,
-            self.pos
-        );
-
-        // calculate bytes to skip
-        let this = self.project();
-        *this.bytes_to_skip = absolute_offset - *this.pos;
-
-        debug!(bytes_to_skip = *this.bytes_to_skip, "seek");
-
-        Ok(())
-    }
-
-    #[instrument(skip_all)]
-    fn poll_complete(
-        mut self: std::pin::Pin<&mut Self>,
-        cx: &mut std::task::Context<'_>,
-    ) -> Poll<std::io::Result<u64>> {
-        if self.bytes_to_skip == 0 {
-            // return the new position (from the start of the stream)
-            return Poll::Ready(Ok(self.pos));
-        }
-
-        // discard some bytes, until pos is where we want it to be.
-        // We create a buffer that we'll discard later on.
-        let mut discard_buf = [0; DISCARD_BUF_SIZE];
-
-        // Loop until we've reached the desired seek position. This is done by issuing repeated
-        // `poll_read` calls.
-        // If the data is not available yet, we will yield back to the executor
-        // and wait to be polled again.
-        loop {
-            if self.bytes_to_skip == 0 {
-                return Poll::Ready(Ok(self.pos));
-            }
-
-            // calculate the length we want to skip at most, which is either a max
-            // buffer size, or the number of remaining bytes to read, whatever is
-            // smaller.
-            let bytes_to_skip_now = std::cmp::min(self.bytes_to_skip as usize, discard_buf.len());
-            let mut discard_buf = tokio::io::ReadBuf::new(&mut discard_buf[..bytes_to_skip_now]);
-
-            ready!(self.as_mut().poll_read(cx, &mut discard_buf))?;
-            let bytes_skipped = discard_buf.filled().len();
-
-            if bytes_skipped == 0 {
-                return Poll::Ready(Err(io::Error::new(
-                    io::ErrorKind::UnexpectedEof,
-                    "got EOF while trying to skip bytes",
-                )));
-            }
-            // decrement bytes to skip. The poll_read call already updated self.pos.
-            *self.as_mut().project().bytes_to_skip -= bytes_skipped as u64;
-        }
-    }
-}
-
-impl<R: tokio::io::AsyncRead + Send + Unpin + 'static> BlobReader for NaiveSeeker<R> {}
-
-#[cfg(test)]
-mod tests {
-    use super::{NaiveSeeker, DISCARD_BUF_SIZE};
-    use std::io::{Cursor, SeekFrom};
-    use tokio::io::{AsyncReadExt, AsyncSeekExt};
-
-    /// This seek requires multiple `poll_read` as we use a multiples of
-    /// DISCARD_BUF_SIZE when doing the seek.
-    /// This ensures we don't hang indefinitely.
-    #[tokio::test]
-    async fn seek() {
-        let buf = vec![0u8; DISCARD_BUF_SIZE * 4];
-        let reader = Cursor::new(&buf);
-        let mut seeker = NaiveSeeker::new(reader);
-        seeker.seek(SeekFrom::Start(4000)).await.unwrap();
-    }
-
-    #[tokio::test]
-    async fn seek_read() {
-        let mut buf = vec![0u8; DISCARD_BUF_SIZE * 2];
-        buf.extend_from_slice(&[1u8; DISCARD_BUF_SIZE * 2]);
-        buf.extend_from_slice(&[2u8; DISCARD_BUF_SIZE * 2]);
-
-        let reader = Cursor::new(&buf);
-        let mut seeker = NaiveSeeker::new(reader);
-
-        let mut read_buf = vec![0u8; DISCARD_BUF_SIZE];
-        seeker.read_exact(&mut read_buf).await.expect("must read");
-        assert_eq!(read_buf.as_slice(), &[0u8; DISCARD_BUF_SIZE]);
-
-        seeker
-            .seek(SeekFrom::Current(DISCARD_BUF_SIZE as i64))
-            .await
-            .expect("must seek");
-        seeker.read_exact(&mut read_buf).await.expect("must read");
-        assert_eq!(read_buf.as_slice(), &[1u8; DISCARD_BUF_SIZE]);
-
-        seeker
-            .seek(SeekFrom::Start(2 * 2 * DISCARD_BUF_SIZE as u64))
-            .await
-            .expect("must seek");
-        seeker.read_exact(&mut read_buf).await.expect("must read");
-        assert_eq!(read_buf.as_slice(), &[2u8; DISCARD_BUF_SIZE]);
-    }
-}

tvix/castore/src/composition.rs

@@ -149,7 +149,7 @@ impl<'r, 'de: 'r, T: 'static> SeedFactory<'de, TagString<'de>> for RegistryWithF
              .0
             .iter()
             .find(|(k, _)| *k == &(TypeId::of::<T>(), tag.as_ref()))
-            .ok_or_else(|| serde::de::Error::custom("Unknown tag"))?
+            .ok_or_else(|| serde::de::Error::custom(format!("Unknown type: {}", tag)))?
             .1;
 
         let entry: &RegistryEntry<T> = <dyn Any>::downcast_ref(&**seed).unwrap();
@@ -215,7 +215,7 @@ impl<'de, T: 'static> serde::Deserialize<'de> for DeserializeWithRegistry<T> {
 
 #[derive(Debug, thiserror::Error)]
 enum TryFromUrlError {
-    #[error("Unknown tag: {0}")]
+    #[error("Unknown type: {0}")]
     UnknownTag(String),
 }
 
@@ -274,6 +274,9 @@ pub fn add_default_services(reg: &mut Registry) {
 }
 
 pub struct CompositionContext<'a> {
+    // The stack used to detect recursive instantiations and prevent deadlocks
+    // The TypeId of the trait object is included to distinguish e.g. the
+    // BlobService "default" and the DirectoryService "default".
     stack: Vec<(TypeId, String)>,
     composition: Option<&'a Composition>,
 }
@@ -431,10 +434,13 @@ impl Composition {
                         new_context
                             .stack
                             .push((TypeId::of::<T>(), entrypoint.clone()));
-                        let res = config
+                        let res =
-                            .build(&entrypoint, &new_context)
+                            config.build(&entrypoint, &new_context).await.map_err(|e| {
-                            .await
+                                match e.downcast() {
-                            .map_err(|e| CompositionError::Failed(entrypoint, e.into()));
+                                    Ok(e) => *e,
+                                    Err(e) => CompositionError::Failed(entrypoint, e.into()),
+                                }
+                            });
                         tx.send(Some(res.clone())).unwrap();
                         res
                     })
@@ -470,3 +476,66 @@ impl Composition {
         }
     }
 }
+
+#[cfg(test)]
+mod test {
+    use super::*;
+    use crate::blobservice::BlobService;
+    use std::sync::Arc;
+
+    /// Test that we return a reference to the same instance of MemoryBlobService (via ptr_eq)
+    /// when instantiating the same entrypoint twice. By instantiating concurrently, we also
+    /// test the channels notifying the second consumer when the store has been instantiated.
+    #[tokio::test]
+    async fn concurrent() {
+        let blob_services_configs_json = serde_json::json!({
+            "default": {
+                "type": "memory",
+            }
+        });
+
+        let blob_services_configs =
+            with_registry(&REG, || serde_json::from_value(blob_services_configs_json)).unwrap();
+        let mut blob_service_composition = Composition::default();
+        blob_service_composition.extend_with_configs::<dyn BlobService>(blob_services_configs);
+        let (blob_service1, blob_service2) = tokio::join!(
+            blob_service_composition.build::<dyn BlobService>("default"),
+            blob_service_composition.build::<dyn BlobService>("default")
+        );
+        assert!(Arc::ptr_eq(
+            &blob_service1.unwrap(),
+            &blob_service2.unwrap()
+        ));
+    }
+
+    /// Test that we throw the correct error when an instantiation would recurse (deadlock)
+    #[tokio::test]
+    async fn reject_recursion() {
+        let blob_services_configs_json = serde_json::json!({
+            "default": {
+                "type": "combined",
+                "local": "other",
+                "remote": "other"
+            },
+            "other": {
+                "type": "combined",
+                "local": "default",
+                "remote": "default"
+            }
+        });
+
+        let blob_services_configs =
+            with_registry(&REG, || serde_json::from_value(blob_services_configs_json)).unwrap();
+        let mut blob_service_composition = Composition::default();
+        blob_service_composition.extend_with_configs::<dyn BlobService>(blob_services_configs);
+        match blob_service_composition
+            .build::<dyn BlobService>("default")
+            .await
+        {
+            Err(CompositionError::Recursion(stack)) => {
+                assert_eq!(stack, vec!["default".to_string(), "other".to_string()])
+            }
+            other => panic!("should have returned an error, returned: {:?}", other.err()),
+        }
+    }
+}

tvix/castore/src/digests.rs

@@ -6,7 +6,7 @@ use thiserror::Error;
 pub struct B3Digest(Bytes);
 
 // TODO: allow converting these errors to crate::Error
-#[derive(Error, Debug)]
+#[derive(Error, Debug, PartialEq)]
 pub enum Error {
     #[error("invalid digest length: {0}")]
     InvalidDigestLen(usize),
@@ -26,6 +26,11 @@ impl From<B3Digest> for bytes::Bytes {
     }
 }
 
+impl From<blake3::Hash> for B3Digest {
+    fn from(value: blake3::Hash) -> Self {
+        Self(Bytes::copy_from_slice(value.as_bytes()))
+    }
+}
 impl From<digest::Output<blake3::Hasher>> for B3Digest {
     fn from(value: digest::Output<blake3::Hasher>) -> Self {
         let v = Into::<[u8; B3_LEN]>::into(value);
@@ -67,6 +72,12 @@ impl From<&[u8; B3_LEN]> for B3Digest {
     }
 }
 
+impl From<B3Digest> for [u8; B3_LEN] {
+    fn from(value: B3Digest) -> Self {
+        value.0.to_vec().try_into().unwrap()
+    }
+}
+
 impl Clone for B3Digest {
     fn clone(&self) -> Self {
         Self(self.0.to_owned())

tvix/castore/src/directoryservice/bigtable.rs

@@ -9,7 +9,9 @@ use std::sync::Arc;
 use tonic::async_trait;
 use tracing::{instrument, trace, warn};
 
-use super::{utils::traverse_directory, DirectoryPutter, DirectoryService, SimplePutter};
+use super::{
+    utils::traverse_directory, Directory, DirectoryPutter, DirectoryService, SimplePutter,
+};
 use crate::composition::{CompositionContext, ServiceBuilder};
 use crate::{proto, B3Digest, Error};
 
@@ -149,7 +151,7 @@ fn derive_directory_key(digest: &B3Digest) -> String {
 #[async_trait]
 impl DirectoryService for BigtableDirectoryService {
     #[instrument(skip(self, digest), err, fields(directory.digest = %digest))]
-    async fn get(&self, digest: &B3Digest) -> Result<Option<proto::Directory>, Error> {
+    async fn get(&self, digest: &B3Digest) -> Result<Option<Directory>, Error> {
         let mut client = self.client.clone();
         let directory_key = derive_directory_key(digest);
 
@@ -241,28 +243,20 @@ impl DirectoryService for BigtableDirectoryService {
 
         // Try to parse the value into a Directory message.
         let directory = proto::Directory::decode(Bytes::from(row_cell.value))
-            .map_err(|e| Error::StorageError(format!("unable to decode directory proto: {}", e)))?;
+            .map_err(|e| Error::StorageError(format!("unable to decode directory proto: {}", e)))?
-
+            .try_into()
-        // validate the Directory.
-        directory
-            .validate()
             .map_err(|e| Error::StorageError(format!("invalid Directory message: {}", e)))?;
 
         Ok(Some(directory))
     }
 
     #[instrument(skip(self, directory), err, fields(directory.digest = %directory.digest()))]
-    async fn put(&self, directory: proto::Directory) -> Result<B3Digest, Error> {
+    async fn put(&self, directory: Directory) -> Result<B3Digest, Error> {
         let directory_digest = directory.digest();
         let mut client = self.client.clone();
         let directory_key = derive_directory_key(&directory_digest);
 
-        // Ensure the directory we're trying to upload passes validation
+        let data = proto::Directory::from(directory).encode_to_vec();
-        directory
-            .validate()
-            .map_err(|e| Error::InvalidRequest(format!("directory is invalid: {}", e)))?;
-
-        let data = directory.encode_to_vec();
         if data.len() as u64 > CELL_SIZE_LIMIT {
             return Err(Error::StorageError(
                 "Directory exceeds cell limit on Bigtable".into(),
@@ -310,7 +304,7 @@ impl DirectoryService for BigtableDirectoryService {
     fn get_recursive(
         &self,
         root_directory_digest: &B3Digest,
-    ) -> BoxStream<'static, Result<proto::Directory, Error>> {
+    ) -> BoxStream<'static, Result<Directory, Error>> {
         traverse_directory(self.clone(), root_directory_digest)
     }
 

tvix/castore/src/directoryservice/combinators.rs

@@ -7,10 +7,9 @@ use futures::TryStreamExt;
 use tonic::async_trait;
 use tracing::{instrument, trace};
 
-use super::{DirectoryGraph, DirectoryService, RootToLeavesValidator, SimplePutter};
+use super::{Directory, DirectoryGraph, DirectoryService, RootToLeavesValidator, SimplePutter};
 use crate::composition::{CompositionContext, ServiceBuilder};
 use crate::directoryservice::DirectoryPutter;
-use crate::proto;
 use crate::B3Digest;
 use crate::Error;
 
@@ -40,7 +39,7 @@ where
     DS2: DirectoryService + Clone + 'static,
 {
     #[instrument(skip(self, digest), fields(directory.digest = %digest))]
-    async fn get(&self, digest: &B3Digest) -> Result<Option<proto::Directory>, Error> {
+    async fn get(&self, digest: &B3Digest) -> Result<Option<Directory>, Error> {
         match self.near.get(digest).await? {
             Some(directory) => {
                 trace!("serving from cache");
@@ -82,7 +81,7 @@ where
     }
 
     #[instrument(skip_all)]
-    async fn put(&self, _directory: proto::Directory) -> Result<B3Digest, Error> {
+    async fn put(&self, _directory: Directory) -> Result<B3Digest, Error> {
         Err(Error::StorageError("unimplemented".to_string()))
     }
 
@@ -90,7 +89,7 @@ where
     fn get_recursive(
         &self,
         root_directory_digest: &B3Digest,
-    ) -> BoxStream<'static, Result<proto::Directory, Error>> {
+    ) -> BoxStream<'static, Result<Directory, Error>> {
         let near = self.near.clone();
         let far = self.far.clone();
         let digest = root_directory_digest.clone();
@@ -179,3 +178,75 @@ impl ServiceBuilder for CacheConfig {
         }))
     }
 }
+
+#[derive(Clone)]
+pub struct Router<DS1, DS2> {
+    writes: DS1,
+    reads: DS2,
+}
+
+#[async_trait]
+impl<DS1, DS2> DirectoryService for Router<DS1, DS2>
+where
+    DS1: DirectoryService + Clone + 'static,
+    DS2: DirectoryService + Clone + 'static,
+{
+    #[instrument(skip(self, digest), fields(directory.digest = %digest))]
+    async fn get(&self, digest: &B3Digest) -> Result<Option<Directory>, Error> {
+        self.reads.get(digest).await
+    }
+
+    #[instrument(skip_all)]
+    async fn put(&self, directory: Directory) -> Result<B3Digest, Error> {
+        self.writes.put(directory).await
+    }
+
+    #[instrument(skip_all, fields(directory.digest = %root_directory_digest))]
+    fn get_recursive(
+        &self,
+        root_directory_digest: &B3Digest,
+    ) -> BoxStream<'static, Result<Directory, Error>> {
+        self.reads.get_recursive(root_directory_digest)
+    }
+
+    #[instrument(skip_all)]
+    fn put_multiple_start(&self) -> Box<(dyn DirectoryPutter + 'static)> {
+        self.writes.put_multiple_start()
+    }
+}
+
+#[derive(serde::Deserialize, Debug)]
+#[serde(deny_unknown_fields)]
+pub struct RouterConfig {
+    writes: String,
+    reads: String,
+}
+
+impl TryFrom<url::Url> for RouterConfig {
+    type Error = Box<dyn std::error::Error + Send + Sync>;
+    fn try_from(_url: url::Url) -> Result<Self, Self::Error> {
+        Err(Error::StorageError(
+            "Instantiating a CombinedDirectoryService from a url is not supported".into(),
+        )
+        .into())
+    }
+}
+
+#[async_trait]
+impl ServiceBuilder for RouterConfig {
+    type Output = dyn DirectoryService;
+    async fn build<'a>(
+        &'a self,
+        _instance_name: &str,
+        context: &CompositionContext,
+    ) -> Result<Arc<dyn DirectoryService>, Box<dyn std::error::Error + Send + Sync + 'static>> {
+        let (writes, reads) = futures::join!(
+            context.resolve(self.writes.clone()),
+            context.resolve(self.reads.clone())
+        );
+        Ok(Arc::new(Router {
+            writes: writes?,
+            reads: reads?,
+        }))
+    }
+}

tvix/castore/src/directoryservice/directory_graph.rs

@@ -1,7 +1,5 @@
 use std::collections::HashMap;
 
-use bstr::ByteSlice;
-
 use petgraph::{
     graph::{DiGraph, NodeIndex},
     visit::{Bfs, DfsPostOrder, EdgeRef, IntoNodeIdentifiers, Walker},
@@ -10,10 +8,7 @@ use petgraph::{
 use tracing::instrument;
 
 use super::order_validator::{LeavesToRootValidator, OrderValidator, RootToLeavesValidator};
-use crate::{
+use crate::{path::PathComponent, B3Digest, Directory, Node};
-    proto::{self, Directory, DirectoryNode},
-    B3Digest,
-};
 
 #[derive(thiserror::Error, Debug)]
 pub enum Error {
@@ -21,6 +16,11 @@ pub enum Error {
     ValidationError(String),
 }
 
+struct EdgeWeight {
+    name: PathComponent,
+    size: u64,
+}
+
 /// This can be used to validate and/or re-order a Directory closure (DAG of
 /// connected Directories), and their insertion order.
 ///
@@ -58,7 +58,7 @@ pub struct DirectoryGraph<O> {
     //
     // The option in the edge weight tracks the pending validation state of the respective edge, for example if
     // the child has not been added yet.
-    graph: DiGraph<Option<Directory>, Option<DirectoryNode>>,
+    graph: DiGraph<Option<Directory>, Option<EdgeWeight>>,
 
     // A lookup table from directory digest to node index.
     digest_to_node_ix: HashMap<B3Digest, NodeIndex>,
@@ -67,18 +67,18 @@ pub struct DirectoryGraph<O> {
 }
 
 pub struct ValidatedDirectoryGraph {
-    graph: DiGraph<Option<Directory>, Option<DirectoryNode>>,
+    graph: DiGraph<Option<Directory>, Option<EdgeWeight>>,
 
     root: Option<NodeIndex>,
 }
 
-fn check_edge(dir: &DirectoryNode, child: &Directory) -> Result<(), Error> {
+fn check_edge(edge: &EdgeWeight, child: &Directory) -> Result<(), Error> {
     // Ensure the size specified in the child node matches our records.
-    if dir.size != child.size() {
+    if edge.size != child.size() {
         return Err(Error::ValidationError(format!(
             "'{}' has wrong size, specified {}, recorded {}",
-            dir.name.as_bstr(),
+            edge.name,
-            dir.size,
+            edge.size,
             child.size(),
         )));
     }
@@ -88,7 +88,7 @@ fn check_edge(dir: &DirectoryNode, child: &Directory) -> Result<(), Error> {
 impl DirectoryGraph<LeavesToRootValidator> {
     /// Insert a new Directory into the closure
     #[instrument(level = "trace", skip_all, fields(directory.digest=%directory.digest(), directory.size=%directory.size()), err)]
-    pub fn add(&mut self, directory: proto::Directory) -> Result<(), Error> {
+    pub fn add(&mut self, directory: Directory) -> Result<(), Error> {
         if !self.order_validator.add_directory(&directory) {
             return Err(Error::ValidationError(
                 "unknown directory was referenced".into(),
@@ -108,7 +108,7 @@ impl DirectoryGraph<RootToLeavesValidator> {
 
     /// Insert a new Directory into the closure
     #[instrument(level = "trace", skip_all, fields(directory.digest=%directory.digest(), directory.size=%directory.size()), err)]
-    pub fn add(&mut self, directory: proto::Directory) -> Result<(), Error> {
+    pub fn add(&mut self, directory: Directory) -> Result<(), Error> {
         let digest = directory.digest();
         if !self.order_validator.digest_allowed(&digest) {
             return Err(Error::ValidationError("unexpected digest".into()));
@@ -129,12 +129,7 @@ impl<O: OrderValidator> DirectoryGraph<O> {
     }
 
     /// Adds a directory which has already been confirmed to be in-order to the graph
-    pub fn add_order_unchecked(&mut self, directory: proto::Directory) -> Result<(), Error> {
+    pub fn add_order_unchecked(&mut self, directory: Directory) -> Result<(), Error> {
-        // Do some basic validation
-        directory
-            .validate()
-            .map_err(|e| Error::ValidationError(e.to_string()))?;
-
         let digest = directory.digest();
 
         // Teach the graph about the existence of a node with this digest
@@ -149,23 +144,32 @@ impl<O: OrderValidator> DirectoryGraph<O> {
         }
 
         // set up edges to all child directories
-        for subdir in &directory.directories {
+        for (name, node) in directory.nodes() {
-            let subdir_digest: B3Digest = subdir.digest.clone().try_into().unwrap();
+            if let Node::Directory { digest, size } = node {
+                let child_ix = *self
+                    .digest_to_node_ix
+                    .entry(digest.clone())
+                    .or_insert_with(|| self.graph.add_node(None));
 
-            let child_ix = *self
+                let pending_edge_check = match &self.graph[child_ix] {
-                .digest_to_node_ix
+                    Some(child) => {
-                .entry(subdir_digest)
+                        // child is already available, validate the edge now
-                .or_insert_with(|| self.graph.add_node(None));
+                        check_edge(
-
+                            &EdgeWeight {
-            let pending_edge_check = match &self.graph[child_ix] {
+                                name: name.clone(),
-                Some(child) => {
+                                size: *size,
-                    // child is already available, validate the edge now
+                            },
-                    check_edge(subdir, child)?;
+                            child,
-                    None
+                        )?;
-                }
+                        None
-                None => Some(subdir.clone()), // pending validation
+                    }
-            };
+                    None => Some(EdgeWeight {
-            self.graph.add_edge(ix, child_ix, pending_edge_check);
+                        name: name.clone(),
+                        size: *size,
+                    }), // pending validation
+                };
+                self.graph.add_edge(ix, child_ix, pending_edge_check);
+            }
         }
 
         // validate the edges from parents to this node
@@ -183,6 +187,7 @@ impl<O: OrderValidator> DirectoryGraph<O> {
                 .expect("edge not found")
                 .take()
                 .expect("edge is already validated");
+
             check_edge(&edge_weight, &directory)?;
         }
 
@@ -266,37 +271,37 @@ impl ValidatedDirectoryGraph {
             .filter_map(move |i| nodes[i.index()].weight.take())
     }
 }
-
+/*
-#[cfg(test)]
-mod tests {
-    use crate::{
-        fixtures::{DIRECTORY_A, DIRECTORY_B, DIRECTORY_C},
-        proto::{self, Directory},
-    };
-    use lazy_static::lazy_static;
-    use rstest::rstest;
-
-    lazy_static! {
         pub static ref BROKEN_DIRECTORY : Directory = Directory {
-            symlinks: vec![proto::SymlinkNode {
+            symlinks: vec![SymlinkNode {
                 name: "".into(), // invalid name!
                 target: "doesntmatter".into(),
             }],
             ..Default::default()
         };
-
+*/
-        pub static ref BROKEN_PARENT_DIRECTORY: Directory = Directory {
+#[cfg(test)]
-            directories: vec![proto::DirectoryNode {
+mod tests {
-                name: "foo".into(),
+    use crate::fixtures::{DIRECTORY_A, DIRECTORY_B, DIRECTORY_C};
-                digest: DIRECTORY_A.digest().into(),
+    use crate::{Directory, Node};
-                size: DIRECTORY_A.size() + 42, // wrong!
+    use lazy_static::lazy_static;
-            }],
+    use rstest::rstest;
-            ..Default::default()
-        };
-    }
 
     use super::{DirectoryGraph, LeavesToRootValidator, RootToLeavesValidator};
 
+    lazy_static! {
+        pub static ref BROKEN_PARENT_DIRECTORY: Directory =
+            Directory::try_from_iter([
+                (
+                    "foo".try_into().unwrap(),
+                    Node::Directory{
+                        digest: DIRECTORY_A.digest(),
+                        size: DIRECTORY_A.size() + 42, // wrong!
+                    }
+                )
+            ]).unwrap();
+    }
+
     #[rstest]
     /// Uploading an empty directory should succeed.
     #[case::empty_directory(&[&*DIRECTORY_A], false, Some(vec![&*DIRECTORY_A]))]
@@ -312,8 +317,6 @@ mod tests {
     #[case::unconnected_node(&[&*DIRECTORY_A, &*DIRECTORY_C, &*DIRECTORY_B], false, None)]
     /// Uploading B (referring to A) should fail immediately, because A was never uploaded.
     #[case::dangling_pointer(&[&*DIRECTORY_B], true, None)]
-    /// Uploading a directory failing validation should fail immediately.
-    #[case::failing_validation(&[&*BROKEN_DIRECTORY], true, None)]
     /// Uploading a directory which refers to another Directory with a wrong size should fail.
     #[case::wrong_size_in_parent(&[&*DIRECTORY_A, &*BROKEN_PARENT_DIRECTORY], true, None)]
     fn test_uploads(
@@ -366,8 +369,6 @@ mod tests {
     #[case::unconnected_node(&*DIRECTORY_C, &[&*DIRECTORY_C, &*DIRECTORY_B], true, None)]
     /// Downloading B (specified as the root) but receiving A instead should fail immediately, because A has no connection to B (the root).
     #[case::dangling_pointer(&*DIRECTORY_B, &[&*DIRECTORY_A], true, None)]
-    /// Downloading a directory failing validation should fail immediately.
-    #[case::failing_validation(&*BROKEN_DIRECTORY, &[&*BROKEN_DIRECTORY], true, None)]
     /// Downloading a directory which refers to another Directory with a wrong size should fail.
     #[case::wrong_size_in_parent(&*BROKEN_PARENT_DIRECTORY, &[&*BROKEN_PARENT_DIRECTORY, &*DIRECTORY_A], true, None)]
     fn test_downloads(

tvix/castore/src/directoryservice/from_addr.rs

@@ -18,6 +18,11 @@ use super::DirectoryService;
 /// - `sled:///absolute/path/to/somewhere`
 ///   Uses sled, using a path on the disk for persistency. Can be only opened
 ///   from one process at the same time.
+/// - `redb:`
+///   Uses a in-memory redb implementation.
+/// - `redb:///absolute/path/to/somewhere`
+///   Uses redb, using a path on the disk for persistency. Can be only opened
+///   from one process at the same time.
 /// - `grpc+unix:///absolute/path/to/somewhere`
 ///   Connects to a local tvix-store gRPC service via Unix socket.
 /// - `grpc+http://host:port`, `grpc+https://host:port`
@@ -52,6 +57,8 @@ mod tests {
     lazy_static! {
         static ref TMPDIR_SLED_1: TempDir = TempDir::new().unwrap();
         static ref TMPDIR_SLED_2: TempDir = TempDir::new().unwrap();
+        static ref TMPDIR_REDB_1: TempDir = TempDir::new().unwrap();
+        static ref TMPDIR_REDB_2: TempDir = TempDir::new().unwrap();
     }
 
     #[rstest]
@@ -75,6 +82,16 @@ mod tests {
     #[case::memory_invalid_root_path("memory:///", false)]
     /// This sets a memory url path to "/foo", which is invalid.
     #[case::memory_invalid_root_path_foo("memory:///foo", false)]
+    /// This configures redb in temporary mode.
+    #[case::redb_valid_temporary("redb://", true)]
+    /// This configures redb with /, which should fail.
+    #[case::redb_invalid_root("redb:///", false)]
+    /// This configures redb with a host, not path, which should fail.
+    #[case::redb_invalid_host("redb://foo.example", false)]
+    /// This configures redb with a valid path, which should succeed.
+    #[case::redb_valid_path(&format!("redb://{}", &TMPDIR_REDB_1.path().join("foo").to_str().unwrap()), true)]
+    /// This configures redb with a host, and a valid path path, which should fail.
+    #[case::redb_invalid_host_with_valid_path(&format!("redb://foo.example{}", &TMPDIR_REDB_2.path().join("bar").to_str().unwrap()), false)]
     /// Correct scheme to connect to a unix socket.
     #[case::grpc_valid_unix_socket("grpc+unix:///path/to/somewhere", true)]
     /// Correct scheme for unix socket, but setting a host too, which is invalid.

tvix/castore/src/directoryservice/grpc.rs

@@ -1,9 +1,9 @@
 use std::collections::HashSet;
 
-use super::{DirectoryPutter, DirectoryService};
+use super::{Directory, DirectoryPutter, DirectoryService};
 use crate::composition::{CompositionContext, ServiceBuilder};
 use crate::proto::{self, get_directory_request::ByWhat};
-use crate::{B3Digest, Error};
+use crate::{B3Digest, DirectoryError, Error};
 use async_stream::try_stream;
 use futures::stream::BoxStream;
 use std::sync::Arc;
@@ -41,10 +41,7 @@ where
     T::Future: Send,
 {
     #[instrument(level = "trace", skip_all, fields(directory.digest = %digest))]
-    async fn get(
+    async fn get(&self, digest: &B3Digest) -> Result<Option<Directory>, crate::Error> {
-        &self,
-        digest: &B3Digest,
-    ) -> Result<Option<crate::proto::Directory>, crate::Error> {
         // Get a new handle to the gRPC client, and copy the digest.
         let mut grpc_client = self.grpc_client.clone();
         let digest_cpy = digest.clone();
@@ -72,15 +69,10 @@ where
                         "requested directory with digest {}, but got {}",
                         digest, actual_digest
                     )))
-                } else if let Err(e) = directory.validate() {
-                    // Validate the Directory itself is valid.
-                    warn!("directory failed validation: {}", e.to_string());
-                    Err(crate::Error::StorageError(format!(
-                        "directory {} failed validation: {}",
-                        digest, e,
-                    )))
                 } else {
-                    Ok(Some(directory))
+                    Ok(Some(directory.try_into().map_err(|_| {
+                        Error::StorageError("invalid root digest length in response".to_string())
+                    })?))
                 }
             }
             Ok(None) => Ok(None),
@@ -90,11 +82,11 @@ where
     }
 
     #[instrument(level = "trace", skip_all, fields(directory.digest = %directory.digest()))]
-    async fn put(&self, directory: crate::proto::Directory) -> Result<B3Digest, crate::Error> {
+    async fn put(&self, directory: Directory) -> Result<B3Digest, crate::Error> {
         let resp = self
             .grpc_client
             .clone()
-            .put(tokio_stream::once(directory))
+            .put(tokio_stream::once(proto::Directory::from(directory)))
             .await;
 
         match resp {
@@ -113,7 +105,7 @@ where
     fn get_recursive(
         &self,
         root_directory_digest: &B3Digest,
-    ) -> BoxStream<'static, Result<proto::Directory, Error>> {
+    ) -> BoxStream<'static, Result<Directory, Error>> {
         let mut grpc_client = self.grpc_client.clone();
         let root_directory_digest = root_directory_digest.clone();
 
@@ -130,19 +122,11 @@ where
             // The Directory digests we received so far
             let mut received_directory_digests: HashSet<B3Digest> = HashSet::new();
             // The Directory digests we're still expecting to get sent.
-            let mut expected_directory_digests: HashSet<B3Digest> = HashSet::from([root_directory_digest]);
+            let mut expected_directory_digests: HashSet<B3Digest> = HashSet::from([root_directory_digest.clone()]);
 
             loop {
                 match stream.message().await {
                     Ok(Some(directory)) => {
-                        // validate the directory itself.
-                        if let Err(e) = directory.validate() {
-                            Err(crate::Error::StorageError(format!(
-                                "directory {} failed validation: {}",
-                                directory.digest(),
-                                e,
-                            )))?;
-                        }
                         // validate we actually expected that directory, and move it from expected to received.
                         let directory_digest = directory.digest();
                         let was_expected = expected_directory_digests.remove(&directory_digest);
@@ -168,14 +152,28 @@ where
                                 .insert(child_directory_digest);
                         }
 
+                        let directory = directory.try_into()
+                            .map_err(|e: DirectoryError| Error::StorageError(e.to_string()))?;
+
                         yield directory;
                     },
+                    Ok(None) if expected_directory_digests.len() == 1 && expected_directory_digests.contains(&root_directory_digest) => {
+                        // The root directory of the requested closure was not found, return an
+                        // empty stream
+                        return
+                    }
                     Ok(None) => {
-                        // If we were still expecting something, that's an error.
+                        // The stream has ended
-                        if !expected_directory_digests.is_empty() {
+                        let diff_len = expected_directory_digests
+                            // Account for directories which have been referenced more than once,
+                            // but only received once since they were deduplicated
+                            .difference(&received_directory_digests)
+                            .count();
+                        // If this is not empty, then the closure is incomplete
+                        if diff_len != 0 {
                             Err(crate::Error::StorageError(format!(
                                 "still expected {} directories, but got premature end of stream",
-                                expected_directory_digests.len(),
+                                diff_len
                             )))?
                         } else {
                             return
@@ -268,11 +266,11 @@ pub struct GRPCPutter {
 #[async_trait]
 impl DirectoryPutter for GRPCPutter {
     #[instrument(level = "trace", skip_all, fields(directory.digest=%directory.digest()), err)]
-    async fn put(&mut self, directory: proto::Directory) -> Result<(), crate::Error> {
+    async fn put(&mut self, directory: Directory) -> Result<(), crate::Error> {
         match self.rq {
             // If we're not already closed, send the directory to directory_sender.
             Some((_, ref directory_sender)) => {
-                if directory_sender.send(directory).is_err() {
+                if directory_sender.send(directory.into()).is_err() {
                     // If the channel has been prematurely closed, invoke close (so we can peek at the error code)
                     // That error code is much more helpful, because it
                     // contains the error message from the server.

tvix/castore/src/directoryservice/memory.rs

@@ -1,4 +1,4 @@
-use crate::{proto, B3Digest, Error};
+use crate::{B3Digest, Error};
 use futures::stream::BoxStream;
 use std::collections::HashMap;
 use std::sync::Arc;
@@ -7,8 +7,9 @@ use tonic::async_trait;
 use tracing::{instrument, warn};
 
 use super::utils::traverse_directory;
-use super::{DirectoryPutter, DirectoryService, SimplePutter};
+use super::{Directory, DirectoryPutter, DirectoryService, SimplePutter};
 use crate::composition::{CompositionContext, ServiceBuilder};
+use crate::proto;
 
 #[derive(Clone, Default)]
 pub struct MemoryDirectoryService {
@@ -18,7 +19,7 @@ pub struct MemoryDirectoryService {
 #[async_trait]
 impl DirectoryService for MemoryDirectoryService {
     #[instrument(skip(self, digest), fields(directory.digest = %digest))]
-    async fn get(&self, digest: &B3Digest) -> Result<Option<proto::Directory>, Error> {
+    async fn get(&self, digest: &B3Digest) -> Result<Option<Directory>, Error> {
         let db = self.db.read().await;
 
         match db.get(digest) {
@@ -37,35 +38,20 @@ impl DirectoryService for MemoryDirectoryService {
                     )));
                 }
 
-                // Validate the Directory itself is valid.
+                Ok(Some(directory.clone().try_into().map_err(|e| {
-                if let Err(e) = directory.validate() {
+                    crate::Error::StorageError(format!("corrupted directory: {}", e))
-                    warn!("directory failed validation: {}", e.to_string());
+                })?))
-                    return Err(Error::StorageError(format!(
-                        "directory {} failed validation: {}",
-                        actual_digest, e,
-                    )));
-                }
-
-                Ok(Some(directory.clone()))
             }
         }
     }
 
     #[instrument(skip(self, directory), fields(directory.digest = %directory.digest()))]
-    async fn put(&self, directory: proto::Directory) -> Result<B3Digest, Error> {
+    async fn put(&self, directory: Directory) -> Result<B3Digest, Error> {
         let digest = directory.digest();
 
-        // validate the directory itself.
-        if let Err(e) = directory.validate() {
-            return Err(Error::InvalidRequest(format!(
-                "directory {} failed validation: {}",
-                digest, e,
-            )));
-        }
-
         // store it
         let mut db = self.db.write().await;
-        db.insert(digest.clone(), directory);
+        db.insert(digest.clone(), directory.into());
 
         Ok(digest)
     }
@@ -74,7 +60,7 @@ impl DirectoryService for MemoryDirectoryService {
     fn get_recursive(
         &self,
         root_directory_digest: &B3Digest,
-    ) -> BoxStream<'static, Result<proto::Directory, Error>> {
+    ) -> BoxStream<'static, Result<Directory, Error>> {
         traverse_directory(self.clone(), root_directory_digest)
     }