c6605992c0
That's one possible abstraction to drive builds.
Whenever IO into a store path is requested, we look up the root node,
and in case we don't have it in PathInfoService, but KnownPaths gives us
a Derivation for that output path, trigger a build and await the result.
This recursively might trigger builds for parent paths if they haven't
been built yet.
Another option would be to simply expose a PathInfoService interface for
a builder too, and loop all building into IO via PathInfoService
composition - but let's start with something.
Note tvix-cli doesn't have a configurable BuildService yet, it's plugged
to the DummyBuildService, so whenever it needs to do a build, it'll fail,
but that's how it can be provoked:
```
(builtins.readFile (import <nixpkgs> {}).hello.outPath + "/bin/hello")
[…]
error[E029]: I/O error: /nix/store/cg8a576pz2yfc1wbhxm1zy4x7lrk8pix-hello-2.12.1: builds are not supported with DummyBuildService
--> [code]:1:2
|
1 | (builtins.readFile (import <nixpkgs> {}).hello.outPath + "/bin/hello")
| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
```
Note how this fails, while pure output path calculation
(`(import <nixpkgs> {}).hello.outPath + "/bin/hello")`) still succeeds.
Change-Id: Id2075d8a2b18554d0dd608b4b29146a8cd411e7f
Reviewed-on: https://cl.tvl.fyi/c/depot/+/10793
Reviewed-by: raitobezarius <tvl@lahfa.xyz>
Tested-by: BuildkiteCI
44 lines
1 KiB
TOML
44 lines
1 KiB
TOML
[package]
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name = "tvix-glue"
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version = "0.1.0"
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edition = "2021"
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[dependencies]
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async-recursion = "1.0.5"
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bstr = "1.6.0"
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bytes = "1.4.0"
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data-encoding = "2.3.3"
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futures = "0.3.30"
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nix-compat = { path = "../nix-compat" }
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tvix-build = { path = "../build", default-features = false, features = []}
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tvix-eval = { path = "../eval" }
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tvix-castore = { path = "../castore" }
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tvix-store = { path = "../store", default-features = false, features = []}
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tracing = "0.1.37"
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tokio = "1.28.0"
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thiserror = "1.0.38"
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serde = "1.0.195"
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serde_json = "1.0"
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sha2 = "0.10.8"
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[dependencies.wu-manber]
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git = "https://github.com/tvlfyi/wu-manber.git"
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[dev-dependencies]
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criterion = { version = "0.5", features = ["html_reports"] }
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hex-literal = "0.4.1"
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lazy_static = "1.4.0"
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pretty_assertions = "1.4.0"
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rstest = "0.18.2"
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tempfile = "3.8.1"
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test-case = "3.3.1"
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[features]
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default = ["nix_tests"]
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# Enables running the Nix language test suite from the original C++
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# Nix implementation (at version 2.3) against Tvix.
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nix_tests = []
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[[bench]]
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name = "eval"
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harness = false
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