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2022-12-15 r/5420 refactor(tvix): build Rust projects using crate2nixVincent Ambo1-32/+7
Introduces granular dependency builds using crate2nix, bootstrapped off the generated configuration from the newly introduced workspace (see cl/7533). This commit checks in the generated Cargo.nix file which can be regenerated with a parameterless invocation of `crate2nix generate` in `//tvix`. I tried generating this in IFD, but it turned out to be harder than what seemed worthwhile for now. In this setup, the various build targets for Rust projects end up being attributes of the imported `Cargo.nix` file at the `tvix.crates` attribute. These still lack configuration, however, which has been fixed in the various `default.nix` files of individual projects. Note that we (temporarily) lose the ability to build tvix-eval's benchmarks in CI. I haven't figured out what magic incantation summons them from the void again ... The `eval-okay-readDir` tests from both test suites have been disabled because they fail for unknown reasons when run in this new derivation. Somebody will have to debug it! Change-Id: I2014614ccb9c8951aedbd71df7966ca191a13695 Reviewed-on: https://cl.tvl.fyi/c/depot/+/7538 Autosubmit: tazjin <tazjin@tvl.su> Reviewed-by: flokli <flokli@flokli.de> Tested-by: BuildkiteCI
2022-12-15 r/5419 refactor(tvix): share a Cargo.lock file between Rust projectsVincent Ambo1-1/+1
This relates to the (abandoned) cl/7256. Introduces a Cargo workspace at //tvix that is primarily intended to be used as a workaround for the annoying Nix+Rust tooling while having a consistent set of dependencies. This is driven in part by a desire to adopt crate2nix and get more granular Nix builds for Tvix's Rust projects, and in part by a need to split //tvix/eval into something providing the CLI (REPL etc.), and a library providing eval, without significantly altering the structure of build targets. To accomplish this the workspace has been designed to allow projects to remain independent build targets. I want to avoid lumping all the projects together - something like //tvix/eval should always be independent of other parts of tvix. A helper function in //tvix/default.nix lets downstream naersk projects construct a sparse root for the project which combines the workspace's `Cargo.lock` with the project's own `Cargo.toml`. Note that cargo commands in the workspace itself require the build dependencies of _all_ projects to be present, which is currently a bit annoying to accomplish. This introduces some breakage: 1. It breaks usage of rust-analyser without being in a shell with the dependencies of *all* Tvix projects, as it is not capable of respecting only the subset of dependencies for a part of the workspace. 2. It is no longer possible to run tests using `cargo test`, as the test generation crate we use does not work with workspaces: https://github.com/frehberg/test-generator/issues/6 This still works in the Nix build as we construct a Cargo project that looks like it's not in a workspace there. Until somebody fixes that crate / writes a new macro / does something else with the test suite, the way to run the tests is through the Nix build. Long-term we'll probably want to get rid of cargo completely, it's just a big wart and most tooling works without it if correctly configured, but we don't have time for that now. Change-Id: I846bff7a8429a25c077fd1e9ef4e3c34a299a4a1 Reviewed-on: https://cl.tvl.fyi/c/depot/+/7533 Reviewed-by: flokli <flokli@flokli.de> Autosubmit: tazjin <tazjin@tvl.su> Tested-by: BuildkiteCI
2022-11-08 r/5263 feat(tvix/eval): Add a proc-macro for defining builtinsGriffin Smith1-0/+4
Add a single new proc macro to a new proc-macro crate, `tvix-eval-proc-macros` for defining an inline module containing nix builtins, and automatically generating a function within that module which returns a list of those builtins as `tvix_eval::value::Builtin`. Change-Id: Ie4afae438914d2af93d15637151a49b4c68aa352 Reviewed-on: https://cl.tvl.fyi/c/depot/+/7198 Reviewed-by: tazjin <tazjin@tvl.su> Reviewed-by: Adam Joseph <adam@westernsemico.com> Tested-by: BuildkiteCI
2022-10-20 r/5162 test(tvix): nix-planned test verification using C++ Nix 2.3 and 2.11sterni1-120/+0
Reimplement the test discovery of the lang tests script in Nix which allows for a more flexible skipping logic that can e.g. react to the C++ Nix version used. This allows us to run the test suite against both C++ Nix 2.3 and the latest C++ Nix version 2.11. The latter is mainly useful, so we can implement newer Nix features and still verify them against the C++ implementation. Change-Id: I30c802844133b86b5e49f5e4f4fefacdb6215e0e Reviewed-on: https://cl.tvl.fyi/c/depot/+/7042 Autosubmit: sterni <sternenseemann@systemli.org> Tested-by: BuildkiteCI Reviewed-by: tazjin <tazjin@tvl.su>
2022-10-19 r/5161 feat(tvix/eval): expect not-yet-passing tests to failAdam Joseph1-0/+1
It is helpful to be able to use the test suite as a regression test: make a change to the compiler/vm, re-run the tests, and if there are any failures you know it's your fault. Right now we can't do that, because the expected-to-fail tests are mixed in with the expected-to-pass tests. So we can't use them as a regression test. Change-Id: Ied606882b9835a7effd7e75bfcf3e5f827e0a2c8 Signed-off-by: Adam Joseph <adam@westernsemico.com> Reviewed-on: https://cl.tvl.fyi/c/depot/+/7036 Reviewed-by: tazjin <tazjin@tvl.su> Tested-by: BuildkiteCI
2022-10-15 r/5135 feat(tvix/eval): Implement builtins.fromJSONGriffin Smith1-5/+9
Using `serde_json` for parsing JSON here, plus an `impl FromJSON for Value`. The latter is primarily to stay "dependency light" for now - likely going with an actual serde `Deserialize` impl in the future is going to be way better as it allows saving significantly on intermediary allocations. Change-Id: I152a0448ff7c87cf7ebaac927c38912b99de1c18 Reviewed-on: https://cl.tvl.fyi/c/depot/+/6920 Tested-by: BuildkiteCI Reviewed-by: tazjin <tazjin@tvl.su>
2022-10-02 r/5018 feat(tvix/eval): Add passthru build for benchmark binariesGriffin Smith1-4/+16
Add a new derivation target to the passthru of tvix.eval that builds the benchmark binaries, *and* copies them to the outupts of the derivation via the (somewhat arcane) `copyBinsFilter` jq script arg to naersk. This is a bit annoying because (as far as I can tell) the derivations returned by naersk aren't directly overridable, so we have to explicitly fixpoint the attrs we're passing. Also, since this is now a separate target to build the benchmarks, we can remove `--all-targets` from the build of `tvix-eval` itself since that was only added to build benchmarks in CI, and make regular (non-benchmark) builds a bit faster. Change-Id: I136b8526790545e93b1ae666abaefb51cbbee390 Reviewed-on: https://cl.tvl.fyi/c/depot/+/6847 Autosubmit: grfn <grfn@gws.fyi> Tested-by: BuildkiteCI Reviewed-by: sterni <sternenseemann@systemli.org>
2022-09-17 r/4886 test(tvix/eval): Add the start of a nix oracle test suiteGriffin Smith1-0/+4
Add the start of a test suite that compares tvix eval results against nix, using the string repr of the value as the comparison. This shells out to a nix-instantiate binary, which is configurable as an environment variable, to eval - there's some extra machinery there to setup a new nix store as a tempdir to allow running this test inside the nix build for tvix-eval itself. Currently this has a macro that'll allow writing lots and lots of hardcoded tests, but going forward I'm also going to be looking into adding proptest-based generation of expressions to compare. Change-Id: I9f4895fab1e668ed2b7dfd6f92f8c80de1bbb16b Reviewed-on: https://cl.tvl.fyi/c/depot/+/6307 Autosubmit: grfn <grfn@gws.fyi> Reviewed-by: tazjin <tazjin@tvl.su> Tested-by: BuildkiteCI
2022-09-04 r/4646 fix(tvix/eval): don't rebuild drv upon changes in cargo target dirsterni1-1/+4
This avoids unnecessary rebuilds of //tvix/eval when working on it locally using impure cargo. Change-Id: I028033a6345a9655e2877a534448706b8f85a1a1 Reviewed-on: https://cl.tvl.fyi/c/depot/+/6317 Tested-by: BuildkiteCI Autosubmit: sterni <sternenseemann@systemli.org> Reviewed-by: tazjin <tazjin@tvl.su>
2022-09-02 r/4604 chore(tvix/eval): Build with --all-targetsGriffin Smith1-0/+1
Primarily to make sure we build benchmark targets, and avoid breaking them Change-Id: I0c43f4cf99ddfd38e7545ef2d8276ef6b240a1e8 Reviewed-on: https://cl.tvl.fyi/c/depot/+/6285 Tested-by: BuildkiteCI Reviewed-by: tazjin <tazjin@tvl.su>
2022-08-26 r/4511 test(tvix/eval): make sure all language tests also pass with C++ Nixsterni1-1/+120
Change-Id: I8428a82db9bf7af5c0273178acbf3e4d7355f5d9 Reviewed-on: https://cl.tvl.fyi/c/depot/+/6153 Tested-by: BuildkiteCI Reviewed-by: tazjin <tazjin@tvl.su>
2022-08-24 r/4468 chore(tvix/eval): enable test runs in naerskVincent Ambo1-0/+1
Change-Id: I08c3a66a3f5c98d914d17a2ad6de98b1c02e50b2 Reviewed-on: https://cl.tvl.fyi/c/depot/+/6134 Tested-by: BuildkiteCI Autosubmit: tazjin <tazjin@tvl.su> Reviewed-by: grfn <grfn@gws.fyi>
2022-08-12 r/4400 chore(tvix/eval): check in naersk-based default.nixVincent Ambo1-0/+5
Change-Id: I9ff0c4a196747361a3e421863beaff07a4972b0f Reviewed-on: https://cl.tvl.fyi/c/depot/+/6067 Tested-by: BuildkiteCI Reviewed-by: grfn <grfn@gws.fyi>