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sterni 8fed8982b7 feat(nix/buildkite): reflect deps between derivations in pipelines
Most of the steps in our buildkite pipeline build derivations without
doing anything else. A lot of those derivations depend on each other.
Consequently, buildkite will schedule builds of derivations whose
dependencies are still in the process of being built. The result is many
buildkite agents doing nothing but blocking on other derivations being
built. We can easily prevent this by using the dependency information we
can get from the derivation (files) of the targets we want to build and
translating them into buildkite step dependencies.

The hard part of this has already been done for a while:
//nix/dependency-analyzer finds the dependencies between a list of
“known” derivations (even if they only depend on each other through
intermediate derivations) without depending on a specific derivation
builder convention, but rather relying on `.drv` files. It still has a
few rough edges, but has been working reliably for our purposes.

Since our steps are identified by derivation hashes, we can just
directly use the available dependency data. Luckily, buildkite seems to
just takes a step as if it was completed if it is skipped, so we don't
even have to check whether dependencies have been skipped or not.

On whitby it seems that the dependency analysis costs about a minute
additionally (which is how long it takes to run
//nix/dependency-analyzer in isolation just about).

Supersedes cl/5063, cl/5060, cl/5064 and cl/5065.

Change-Id: I91d2eb2b43d60811cac0d26fa94467298f622970
Reviewed-on: https://cl.tvl.fyi/c/depot/+/11116
Autosubmit: sterni <sternenseemann@systemli.org>
Tested-by: BuildkiteCI
Reviewed-by: ezemtsov <eugene.zemtsov@gmail.com>
2024-04-16 16:16:05 +00:00
.gcroots feat(.envrc): gcroot third_party.sources 2022-09-15 11:27:53 +00:00
.nixery feat(ops/modules): Add module for running Nixery 2021-08-12 14:55:59 +00:00
corp chore: update links to tvixbolt 2024-02-24 10:17:56 +00:00
docs docs(CONTRIBUTING): update character length limit 2024-03-19 23:47:26 +00:00
fun chore(fun/paroxysm): update deps and build against in tree crimp 2024-03-11 16:52:45 +00:00
lisp chore(depot): update OWNERS files for aspen 2023-12-20 18:35:58 +00:00
net chore(net/crimp): update dependencies 2024-03-11 16:52:45 +00:00
nix feat(nix/buildkite): reflect deps between derivations in pipelines 2024-04-16 16:16:05 +00:00
ops feat(automatic-gc): robust way to disable automatic-gc 2024-03-31 21:44:26 +00:00
third_party feat(nix/buildkite): use keys based on drvPaths where possible 2024-04-16 16:15:35 +00:00
tools fix(depotfmt): only exclude *imported* tvix tests 2024-03-15 14:22:49 +00:00
tvix docs(tvix/castore/blobservice): explain open_read for small blobs more 2024-04-15 19:33:37 +00:00
users refactor(tvix/nix-compat): move worker_protocol into nix_daemon mod 2024-04-13 10:09:35 +00:00
views fix(tvix): apply cbtemulator patch in tvix view 2024-04-13 12:09:47 +00:00
web fix(web/panettone): Hotfixes for full text search change 2024-03-31 20:58:18 +00:00
.envrc feat(.envrc): gcroot third_party.sources 2022-09-15 11:27:53 +00:00
.git-blame-ignore-revs fix: add cl/4397 (treewide nixpkgs-fmt) to git-blame-ignore-revs 2022-02-07 18:15:09 +00:00
.gitignore feat(buildkite): avoid building extraSteps in pipeline construction 2024-03-07 15:39:56 +00:00
.hgignore chore(hgignore): ignore .git for hg 2020-06-14 18:23:13 +00:00
.mailmap chore(mailmap): add my name to mailmap 2020-07-18 18:15:05 +00:00
.rgignore chore: Only exclude //third_party/git from ripgrep 2020-05-17 23:58:22 +01:00
buf.gen.yaml feat(nix/bufCheck): ensure .pb.go is up to date 2022-12-27 13:27:40 +00:00
buf.yaml chore(buf): Use nixpkgs-provided buf 2022-10-21 18:39:03 +00:00
default.nix fix(aspen/system): Fix and reenable system build 2024-04-07 14:19:01 +00:00
LICENSE chore: another year of licensing 2023-04-09 13:34:18 +00:00
OWNERS chore(depot): update OWNERS files for aspen 2023-12-20 18:35:58 +00:00
README.md chore(users): grfn -> aspen 2024-02-14 19:37:41 +00:00
RULES feat(whitby): Let sterni bear the wheel 2021-05-23 19:06:15 +00:00
rustfmt.toml feat(depotfmt): Check & format Rust code with rustfmt 2022-02-08 12:06:39 +00:00

depot

Build status

This repository is the monorepo for the community around The Virus Lounge, containing our personal tools and infrastructure. Everything in here is built using Nix.

A large portion of the software here is very self-referential, meaning that it exists to sustain the operation of the repository. This is the case because we partially see this as an experiment in tooling for monorepos.

Highlights

Services

  • Source code is available primarily through Sourcegraph on cs.tvl.fyi, where it is searchable and even semantically indexed. A lower-tech view of the repository is also available via cgit-pink on code.tvl.fyi.

    The repository can be cloned using git from https://cl.tvl.fyi/depot.

  • All code in the depot, with the exception of code that is checked in to individual //users folders, needs to be reviewed. We use Gerrit on cl.tvl.fyi for this.

  • Issues are tracked via our own issue tracker on b.tvl.fyi. Its source code lives at //web/panettone/.

  • Smaller todo-list entries which do not warrant a separate issue are listed at todo.tvl.fyi.

  • We use Buildkite for CI. Recent builds are listed on tvl.fyi/builds and pipelines are configured dynamically via //ops/pipelines.

  • A search service that makes TVL services available via textual shortcuts is available: atward

All services that we host are deployed on NixOS machines that we manage. Their configuration is tracked in //ops/{modules,machines}.

Nix

  • //nix/readTree contains the Nix code which automatically registers projects in our Nix attribute hierarchy based on their in-tree location
  • //tools/nixery contains the source code of Nixery, a container registry that can build images ad-hoc from Nix packages
  • //nix/yants contains Yet Another Nix Type System, which we use for a variety of things throughout the repository
  • //nix/buildGo implements a Nix library that can build Go software in the style of Bazel's rules_go. Go programs in this repository are built using this library.
  • //nix/buildLisp implements a Nix library that can build Common Lisp software. Currently only SBCL is supported. Lisp programs in this repository are built using this library.
  • //web/blog and //web/atom-feed: A Nix-based static site generator which generates the web page and Atom feed for tazj.in (//users/tazjin/homepage) and tvl.fyi (//web/tvl)
  • //web/bubblegum contains a CGI-based web framework written in Nix.
  • //nix/nint: A shebang-compatible interpreter wrapper for Nix.
  • //tvix contains initial work towards a modular architecture for Nix.

We have a variety of other tools and libraries in the //nix folder which may be of interest.

Packages / Libraries

  • //net/alcoholic_jwt contains an easy-to-use JWT-validation library for Rust
  • //net/crimp contains a high-level HTTP client using cURL for Rust
  • //tools/emacs-pkgs contains various useful Emacs libraries, for example:
    • dottime.el provides dottime in the Emacs modeline
    • nix-util.el provides editing utilities for Nix files
    • term-switcher.el is an ivy-function for switching between vterm buffers
    • tvl.el provides helper functions for interacting with the TVL monorepo
  • //lisp/klatre provides a grab-bag utility library for Common Lisp

User packages

Contributors to the repository have user directories under //users, which can be used for personal or experimental code that does not require review.

Some examples:

  • //users/aspen/xanthous: A (WIP) TUI RPG, written in Haskell.
  • //users/tazjin/emacs: tazjin's Emacs & EXWM configuration
  • //users/tazjin/finito: A persistent finite-state machine library for Rust.

Licensing

Unless otherwise stated in a subdirectory, all code is licensed under the MIT license. See LICENSE for details.

Contributing

If you'd like to contribute to any of the tools in here, please check out the contribution guidelines and our code of conduct.

IRC users can find us in #tvl on hackint, which is also reachable via XMPP at #tvl@irc.hackint.org (sic!).

Hackint also provide a web chat.