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2024-07-07 r/8357 refactor(tvix): point SSL_CERT_FILE to /dev/nullFlorian Klink1-3/+3
reqwest wants to be able to read a file of trust roots when constructed, but as it doesn't actually do any HTTPS connections inside the nix build, an empty list of trust roots is totally sufficient. Thankfully /dev/null provides such a file. Change-Id: I9bd1619b2c9f8ff2a6640d2ac410d4de5b20c2ea Reviewed-on: https://cl.tvl.fyi/c/depot/+/11961 Autosubmit: flokli <flokli@flokli.de> Tested-by: BuildkiteCI Reviewed-by: aspen <root@gws.fyi>
2024-07-07 r/8353 test(tvix/cli): Make the REPL testableAspen Smith1-0/+3
Juggle around the internals of the tvix-cli crate so that we expose the Repl as a public type with a `send` method, that sends a string to the repl and *captures all output* so that it can be subsequently asserted on in tests. Then, demonstrate that this works with a single (for now) REPL test using expect-test to assert on the output of a single command sent to the REPL. As the REPL gets more complicated, this will allow us to make tests that cover that complex behavior. Change-Id: I88175bd72d8760c79faade95ebb1d956f08a7b83 Reviewed-on: https://cl.tvl.fyi/c/depot/+/11958 Autosubmit: aspen <root@gws.fyi> Tested-by: BuildkiteCI Reviewed-by: flokli <flokli@flokli.de>
2024-04-22 r/7989 refactor(tvix/cli/default.nix): make eval tests and benches derivationsFlorian Klink1-49/+45
This makes the eval tests and benchmarks standalone Nix derivations and readTree targets: ``` nix-build -A tvix.cli.eval-nixpkgs-cross-hello-outpath nix-build -A tvix.cli.benchmark-nixpkgs-attrnames ``` Even without doing any fetches, We need to set `SSL_CERT_FILE`, so reqwest is able to load its CA roots. Change-Id: Ib45282d01044165c7816391adbeeb26334f8e924 Reviewed-on: https://cl.tvl.fyi/c/depot/+/11493 Reviewed-by: raitobezarius <tvl@lahfa.xyz> Tested-by: BuildkiteCI Autosubmit: flokli <flokli@flokli.de>
2024-01-16 r/7393 fix(tvix/cli/ci): prevent unnecessary dep on compared out/drv pathsterni1-1/+1
Change-Id: Ieab16fd5fad67a4ed0124f118aef8abbefd51cdb Reviewed-on: https://cl.tvl.fyi/c/depot/+/10646 Reviewed-by: flokli <flokli@flokli.de> Tested-by: BuildkiteCI Autosubmit: sterni <sternenseemann@systemli.org>
2024-01-03 r/7342 feat(tvix/cli): test `firefox` `(drv|out)Path`Ryan Lahfa1-0/+2
With context strings, we are now able to reproduce up to firefox. Until a more problematic example can be found, we should at least lean on this particular example. Change-Id: Ibeaf799d26e1f160b6c93f8ccd978702a2a7e3e1 Reviewed-on: https://cl.tvl.fyi/c/depot/+/10460 Reviewed-by: flokli <flokli@flokli.de> Reviewed-by: tazjin <tazjin@tvl.su> Tested-by: BuildkiteCI
2023-12-12 r/7171 feat(tvix/cli): add benchmark for bf286a54bcAdam Joseph1-0/+2
cl/7558 used this expression as a benchmark to justify the introduction of LightSpan::Delayed: builtins.length (builtins.attrNames (import ${pkgs.path} {})) Let's add it as a benchmark case so it can be referenced easily. Benchmark: {"nixpkgs-attrnames":{"kbytes":"233824","system":"0.32","user":"2.02"}} Change-Id: Idb6c69ddd284605dd3b5fd9ac5c79a69b9a470b7 Reviewed-on: https://cl.tvl.fyi/c/depot/+/10253 Autosubmit: Adam Joseph <adam@westernsemico.com> Reviewed-by: tazjin <tazjin@tvl.su> Tested-by: BuildkiteCI
2023-12-12 r/7163 feat(tvix/cli): add macrobenchmarkAdam Joseph1-1/+61
This commit adds a simple MVP benchmark, built on our nix infrastructure instead of cargo. It simply runs `tvix-eval` inside of GNU time, and prints the three essential statistics in a short JSON blob. You can run the benchmark with a simple `nix run`, like: nix run -f . tvix.cli.benchmark-hello nix run -f . tvix.cli.benchmark-firefox nix run -f . tvix.cli.benchmark-cross-firefox Currently these blobs are stored only in the CI logs, which I'm sure get garbage-collected at some point. We should be putting them in the git trailers, but that can wait for a future CL. I tried using `cargo bench` for this but found it incredibly frustrating. Maybe I'm doing it wrong. It seems to be designed for microbenchmarks only, and very hard to control. It kept building all sorts of unnecessary stuff (like the tests), and unlike crate2nix it was doing all the builds on only a single machine instead of using more than one machine. Worse, for that single machine it kept picking my laptop instead of my fast servers! It seems excessively cargo-flavored for such a straightforward task. Benchmark: {"hello.outPath":{"kbytes":"244736","system":"0.36","user":"2.76"}} Benchmark: {"firefox.outPath":{"kbytes":"1506736","system":"2.38","user":"32.01"}} Benchmark: {"pkgsCross.aarch64-multiplatform.firefox.outPath":{"kbytes":"11334548","system":"10.70","user":"107.07"}} Change-Id: I85bc046ec551360284d7ecfc81a03914f0085909 Reviewed-on: https://cl.tvl.fyi/c/depot/+/10216 Autosubmit: Adam Joseph <adam@westernsemico.com> Reviewed-by: grfn <grfn@gws.fyi> Reviewed-by: tazjin <tazjin@tvl.su> Tested-by: BuildkiteCI
2023-06-20 r/6336 fix(tvix/eval): only finalise formal arguments if defaultingsterni1-3/+2
When dealing with a formal argument in a function argument pattern that has a default expression, there are two different things that can happen at runtime: Either we select its value from the passed attribute successfully or we need to use the default expression. Both of these may be thunks and both of these may need finalisers. However, in the former case this is taken care of elsewhere, the value will always be finalised already if necessary. In the latter case we may need to finalise the thunk resulting from the default expression. However, the thunk corresponding to the expression may never end up in the local's stack slot. Since finalisation goes by stack slot (and not constants), we need to prevent a case where we don't fall back to the default expression, but finalise anyways. Previously, we worked around this by making `OpFinalise` ignore non-thunks. Since finalisation of already evaluated thunks still crashed, the faulty compilation of function pattern arguments could still cause a crash. As a new approach, we reinstate the old behavior of `OpFinalise` to crash whenever encountering something that is either not a thunk or doesn't need finalisation. This can also help catching (similar) miscompilations in the future. To then prevent the crash, we need to track whether we have fallen back or not at runtime. This is done using an additional phantom on the stack that holds a new `FinaliseRequest` value. When it comes to finalisation we check this value and conditionally execute `OpFinalise` based on its value. Resolves b/261 and b/265 (partially). Change-Id: Ic04fb80ec671a2ba11fa645090769c335fb7f58b Reviewed-on: https://cl.tvl.fyi/c/depot/+/8705 Reviewed-by: tazjin <tazjin@tvl.su> Tested-by: BuildkiteCI Autosubmit: sterni <sternenseemann@systemli.org>
2023-05-29 r/6214 fix(tvix/eval): thunk unary operator applicationssterni1-0/+3
Unary operator applications are thunked which can easily be observed by nix-instantiate --eval -E '[ (!true) (-1) ]' Unfortunately, there are few simple expressions where this makes a difference in the end result. Thus it only cropped up when using nixpkgs for cross compilation: Here we would compile the expression !(stdenv.cc.isGNU or false) to assemble python3Minimal's passthru attribute set (at least this seems to be the most likely explanation from the backtraces I've studied). This means that an unthunked <stdenv.cc.isGNU or false> OpForce OpInvert would be performed in order to assemble this attribute set, causing stdenv.cc to be evaluated too early, causing an infinite recursion. Resolves b/273. It seems that having a test suite that doesn't use --strict and relies on thunks rendered as <CODE> would be beneficial for catching such issues. I've not been able to find a test case with --strict that demonstrates the problem fixed in this CL. Change-Id: I640a5827b963f5b9d0f86fa2142e75e3a6bbee78 Reviewed-on: https://cl.tvl.fyi/c/depot/+/8654 Tested-by: BuildkiteCI Autosubmit: sterni <sternenseemann@systemli.org> Reviewed-by: tazjin <tazjin@tvl.su>
2023-05-24 r/6190 feat(tvix/cli): check nixpkgs eval for pkgs.hello.outPathFlorian Klink1-0/+1
We already evaluate this the same as Nix does, so worth adding it into CI. Change-Id: I529faccac6e5e16e0bc985ab4c3e0cd07bb23293 Reviewed-on: https://cl.tvl.fyi/c/depot/+/8624 Tested-by: BuildkiteCI Reviewed-by: tazjin <tazjin@tvl.su> Autosubmit: flokli <flokli@flokli.de>
2023-05-24 r/6189 feat(tvix/cli): introduce mkNixpkgsEvalCheck, add outPath checkFlorian Klink1-16/+23
This introduces a function that can be instantiated with an attribute path to instantiate, as well as the expected path (normally interpolated with the nix evaluator). Check both pkgs.stdenv.drvPath and pkgs.stdenv.outPath to match. Change-Id: Id667ed35fa159ff83fedb3017ef8d3271aa42695 Reviewed-on: https://cl.tvl.fyi/c/depot/+/8606 Reviewed-by: tazjin <tazjin@tvl.su> Autosubmit: flokli <flokli@flokli.de> Tested-by: BuildkiteCI
2023-03-14 r/5996 chore(tvix/cli): don't set COREPKGS anymoreFlorian Klink1-4/+0
Since cl/8213, tvix bundles corepkgs. Change-Id: I17fa4452a6a1d554ae67b4aed9d9b1e77cb495f5 Reviewed-on: https://cl.tvl.fyi/c/depot/+/8305 Autosubmit: flokli <flokli@flokli.de> Reviewed-by: tazjin <tazjin@tvl.su> Tested-by: BuildkiteCI
2023-02-03 r/5829 test(tvix/cli): eval nixpkgs.stdenv in CI and assert that it matchesVincent Ambo1-2/+26
Change-Id: If80194b5fdbf69512217bd4780e416e678045323 Reviewed-on: https://cl.tvl.fyi/c/depot/+/8023 Reviewed-by: flokli <flokli@flokli.de> Tested-by: BuildkiteCI
2022-12-21 r/5440 refactor(tvix): split binary (REPL etc.) out from evaluator libraryVincent Ambo1-0/+5
The tvix-eval project is independent from any *uses* of the evaluator, such as the tvix-repl. This functionality has been split out into a separate "tvix-cli" crate. Note that this doesn't have to mean that this CLI crate is the "final" CLI crate for tvix, the point of this is not "getting the CLI structure right" but rather "getting the evaluator structure right". This reshuffling is part of restructuring the way that functionality like store communication is injected into language evaluation. Note that at this commit the new CLI crate is not at feature-parity. Change-Id: Id0af03dc8e07ef09a9f882a89612ad555eca8f93 Reviewed-on: https://cl.tvl.fyi/c/depot/+/7541 Autosubmit: tazjin <tazjin@tvl.su> Reviewed-by: grfn <grfn@gws.fyi> Tested-by: BuildkiteCI