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2023-01-06 r/5594 test(tvix/eval): add test for builtins paritysterni3-0/+41
This will eventually force us to have a base builtins set in common with C++ Nix, i.e. all 2.3 builtins except the controversial builtins.valueSize. Change-Id: I2c767f07d6a14711911658e87da9f18ede57a143 Reviewed-on: https://cl.tvl.fyi/c/depot/+/7747 Autosubmit: sterni <sternenseemann@systemli.org> Tested-by: BuildkiteCI Reviewed-by: tazjin <tazjin@tvl.su>
2023-01-04 r/5582 fix(tvix/eval): ' is allowed in nonfirst position in Nix identifierssterni2-0/+31
With this is_valid_nix_identifier should line up with the upstream lexer definition: ID [a-zA-Z\_][a-zA-Z0-9\_\'\-]* While we're working on this, add a simple test checking the various formatting rules. Interestingly, it would not be suitable as an identity test, since you have to write { "assert" = null; } in order to avoid an evaluation error, but C++ Nix is happy to print this as { assert = null; } – maybe should be considered to be a bug. Change-Id: I0a4e1ccb5033a80f3767fb8d1c4bba08d303c5d8 Reviewed-on: https://cl.tvl.fyi/c/depot/+/7744 Autosubmit: sterni <sternenseemann@systemli.org> Tested-by: BuildkiteCI Reviewed-by: tazjin <tazjin@tvl.su>
2023-01-04 r/5581 refactor(tvix/eval): streamline construction of globals/builtinsVincent Ambo1-2/+1
Previously the construction of globals (a compiler-only concept) and builtins (a (now) user-facing API) was intermingled between multiple different modules, and kind of difficult to understand. The complexity of this had grown in large part due to the implementation of `builtins.import`, which required the notorious "knot-tying" trick using Rc::new_cyclic (see cl/7097) for constructing the set of globals. As part of the new `Evaluation` API users should have the ability to bring their own builtins, and control explicitly whether or not impure builtins are available (regardless of whether they're compiled in or not). To streamline the construction and allow the new API features to work, this commit restructures things by making these changes: 1. The `tvix_eval::builtins` module is now only responsible for exporting sets of builtins. It no longer has any knowledge of whether or not certain sets (e.g. only pure, or pure+impure) are enabled, and it has no control over which builtins are globally available (this is now handled in the compiler). 2. The compiler module is now responsible for both constructing the final attribute set of builtins from the set of builtins supplied by a user, as well as for populating its globals (that is identifiers which are available at the top-level scope). 3. The `Evaluation` API now carries a `builtins` field which is populated with the pure builtins by default, and can be extended by users. 4. The `import` feature has been moved into the compiler, as a special case. In general, builtins no longer have the ability to reference the "fix point" of the globals set. This should not change any functionality, and in fact preserves minor differences between Tvix/Nix that we already had (such as `builtins.builtins` not existing). Change-Id: Icdf5dd50eb81eb9260d89269d6e08b1e67811a2c Reviewed-on: https://cl.tvl.fyi/c/depot/+/7738 Reviewed-by: sterni <sternenseemann@systemli.org> Autosubmit: tazjin <tazjin@tvl.su> Tested-by: BuildkiteCI Reviewed-by: flokli <flokli@flokli.de>
2022-12-29 r/5541 refactor(tvix/eval): persistent, memory-sharing OrdMap for NixAttrsVincent Ambo1-5/+5
This uses the `im::OrdMap` for `NixAttrs` to enable sharing of memory between different iterations of a map. This slightly speeds up eval, but not significantly. Future work might include benchmarking whether using a `HashMap` and only ordering in cases where order is actually required would help. This switches to a fork of `im` that fixes some bugs with its OrdMap implementation. Change-Id: I2f6a5ff471b6d508c1e8a98b13f889f49c0d9537 Reviewed-on: https://cl.tvl.fyi/c/depot/+/7676 Reviewed-by: sterni <sternenseemann@systemli.org> Tested-by: BuildkiteCI
2022-12-25 r/5486 fix(tvix/eval): fix current clippy warningsVincent Ambo2-8/+6
It's been a while since the last time, so quite a lot of stuff has accumulated here. Change-Id: I0762827c197b30a917ff470fd8ae8f220f6ba247 Reviewed-on: https://cl.tvl.fyi/c/depot/+/7597 Reviewed-by: grfn <grfn@gws.fyi> Autosubmit: tazjin <tazjin@tvl.su> Tested-by: BuildkiteCI
2022-12-21 r/5459 feat(tvix/eval): add EvalIO to public crate APIVincent Ambo1-2/+8
This lets users set the `io_handle` field on an `Evaluation`, which is then propagated to the VM. Change-Id: I616d7140724fb2b4db47c2ebf95451d5303a487a Reviewed-on: https://cl.tvl.fyi/c/depot/+/7566 Reviewed-by: grfn <grfn@gws.fyi> Tested-by: BuildkiteCI
2022-12-21 r/5439 refactor(tvix/eval): use new public API in test codeVincent Ambo1-39/+44
This removes internal uses of the previous crate::eval module, which is being removed. Change-Id: I5fb3c53460a9c5381853d0258f9ed074ab23c630 Reviewed-on: https://cl.tvl.fyi/c/depot/+/7543 Tested-by: BuildkiteCI Autosubmit: tazjin <tazjin@tvl.su> Reviewed-by: grfn <grfn@gws.fyi>
2022-12-15 r/5420 refactor(tvix): build Rust projects using crate2nixVincent Ambo5-0/+0
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
2022-12-02 r/5374 test(tvix/eval): check inner forcing despite declaring pointersterni2-0/+12
Maybe counter-intuitively the inner elements of a list or the attribute values of an attribute set will be forced despite pointer equality (but only one layer deep). Change-Id: I485d96452fb56f5fb342d39039c9137725b33d3f Reviewed-on: https://cl.tvl.fyi/c/depot/+/7371 Reviewed-by: Adam Joseph <adam@westernsemico.com> Tested-by: BuildkiteCI
2022-12-02 r/5373 test(tvix/eval): add a test for repeated keys in listToAttrsVincent Ambo2-0/+14
This came up in the Nix Language channel today and I thought it warranted a test case. We did actually implement this correctly. Change-Id: I4b37c92d06eb6e3a7f59ea3d10af38f2b0a93d53 Reviewed-on: https://cl.tvl.fyi/c/depot/+/7493 Reviewed-by: sterni <sternenseemann@systemli.org> Autosubmit: tazjin <tazjin@tvl.su> Tested-by: BuildkiteCI
2022-12-02 r/5369 test(tvix/eval): verify pointer equality checkssterni2-0/+47
Change-Id: I9baf2810fbd5b6ee8bfe10fce5b64801a35c1d67 Reviewed-on: https://cl.tvl.fyi/c/depot/+/7369 Reviewed-by: tazjin <tazjin@tvl.su> Reviewed-by: Adam Joseph <adam@westernsemico.com> Tested-by: BuildkiteCI
2022-12-02 r/5368 test(tvix/eval): verify pointer equality in list comparisonssterni2-0/+7
Change-Id: I617d402c8ecc7aaf607c4bdcd58a06ebddb71fac Reviewed-on: https://cl.tvl.fyi/c/depot/+/7370 Reviewed-by: tazjin <tazjin@tvl.su> Tested-by: BuildkiteCI Reviewed-by: Adam Joseph <adam@westernsemico.com>
2022-11-26 r/5339 fix(tvix/eval): OpAdd must weakly stringify if either arg is stringAdam Joseph2-0/+8
Tests included. Change-Id: I7a4905d6103813373e383e2e8629c5fd243d6bca Reviewed-on: https://cl.tvl.fyi/c/depot/+/7377 Tested-by: BuildkiteCI Reviewed-by: tazjin <tazjin@tvl.su> Autosubmit: Adam Joseph <adam@westernsemico.com>
2022-11-25 r/5310 test(tvix/eval): add eval-okay-closure-pointer-compareAdam Joseph2-0/+15
This test case checks two things: * A sanity check that "pointer equality for functions" means not just the lambda, but also the upvalues. * To be pointer-equal, it is not enough for the upvalues to be normal-form equal (i.e. `nix_eq()`-equal); the upvalues must be *pointer*-equal. The second part of the test case checks for this. Signed-off-by: Adam Joseph <adam@westernsemico.com> Change-Id: I4e59327a6f199b8212e97197b212e3c3934bb3f0 Reviewed-on: https://cl.tvl.fyi/c/depot/+/7372 Reviewed-by: sterni <sternenseemann@systemli.org> Tested-by: BuildkiteCI
2022-11-24 r/5308 test(tvix/eval): test limits of builtins.seq's forcingsterni2-2/+2
Change-Id: I6dfc9108220762ef3372cd2739e91d79c01a55e1 Reviewed-on: https://cl.tvl.fyi/c/depot/+/7366 Tested-by: BuildkiteCI Autosubmit: sterni <sternenseemann@systemli.org> Reviewed-by: tazjin <tazjin@tvl.su>
2022-11-21 r/5296 test(tvix/eval): enable eval-okay-closure test from nix_testsVincent Ambo2-1/+2
This function covers builtins.genericClosure, seemingly including weird behaviour around the order in which the work set is processed. For some reason, in C++ Nix the test expectation is written in XML which we do not yet support, so I have created a new expectation file using `nix-instantiate --eval --strict` on the file (yes, using C++ Nix). Change-Id: Id90e7117d120dc66d963a51083c4d8e8f2d9f181 Reviewed-on: https://cl.tvl.fyi/c/depot/+/7311 Reviewed-by: sterni <sternenseemann@systemli.org> Tested-by: BuildkiteCI
2022-11-10 r/5276 feat(tvix/eval): detect division by zerojhahn2-0/+2
This detects if the second argument of a division is a zero (either as integer or as float). If so, an error message is displayed. This fixes b/219. Change-Id: I50203d14a71482bc757832a2c8dee08eb7d35c49 Reviewed-on: https://cl.tvl.fyi/c/depot/+/7258 Tested-by: BuildkiteCI Reviewed-by: flokli <flokli@flokli.de>
2022-11-06 r/5255 feat(tvix/eval): placeholder builtin implementationsVincent Ambo2-0/+0
Adds initial placeholders for builtins.{derivation, unsafeDiscardStringContext}. Change-Id: I67a126c9b9f9f4f11e2256e69b9a32ebd9eb1b0e Reviewed-on: https://cl.tvl.fyi/c/depot/+/7187 Autosubmit: tazjin <tazjin@tvl.su> Tested-by: BuildkiteCI Reviewed-by: grfn <grfn@gws.fyi>
2022-11-04 r/5244 feat(tvix/eval): implement builtins.splitAdam Joseph2-0/+0
This implements builtins.split, and passes eval-okay-regex-split.nix (which is moved out of notyetpassing). Signed-off-by: Adam Joseph <adam@westernsemico.com> Change-Id: Ieb0975da2058966c697ee0e2f5b3f26ccabfae57 Reviewed-on: https://cl.tvl.fyi/c/depot/+/7143 Tested-by: BuildkiteCI Reviewed-by: grfn <grfn@gws.fyi>
2022-11-04 r/5242 test(tvix/eval): add a test case for groupBy with thunksAdam Joseph2-0/+7
We have to be careful implementing `builtins.groupBy`, since the list may contain thunks, and tvix's to_xxx() functions do not work on thunks. Signed-off-by: Adam Joseph <adam@westernsemico.com> Change-Id: I182b6fc2d4296f864ed16744ef70b153e8e6978a Reviewed-on: https://cl.tvl.fyi/c/depot/+/7039 Reviewed-by: tazjin <tazjin@tvl.su> Tested-by: BuildkiteCI
2022-11-04 r/5241 fix(tvix/eval): quote keys which are not valid identifiersAdam Joseph2-0/+2
The impl Display for NixAttrs needs to wrap double quotes around any keys which are not valid Nix identifiers. This commit does that, and adds a test (which fails prior to this commit and passes after this commit). Change-Id: Ie31ce91e8637cb27073f23f115db81feefdc6424 Reviewed-on: https://cl.tvl.fyi/c/depot/+/7084 Autosubmit: Adam Joseph <adam@westernsemico.com> Reviewed-by: tazjin <tazjin@tvl.su> Tested-by: BuildkiteCI
2022-10-31 r/5226 fix(tvix/eval): nix_eq() must recurseAdam Joseph4-0/+2
The current implementation of nix_eq will force one level of thunks and then switch to the (non-forcing) rust Eq::eq() method. This gives incorrect results for lists-of-thunks. This commit changes nix_eq() to be recursive. A regression test (which fails prior to this commit) is included. This fix also causes nix_tests/eval-okay-fromjson.nix to pass, so it is moved out of notyetpassing. Change-Id: I655fd7a5294208a7b39df8e2c3c12a8b9768292f Signed-off-by: Adam Joseph <adam@westernsemico.com> Reviewed-on: https://cl.tvl.fyi/c/depot/+/7142 Tested-by: BuildkiteCI Reviewed-by: tazjin <tazjin@tvl.su>
2022-10-29 r/5223 test(tvix/eval): builtins.sort must preserve order of equal elementssterni2-0/+8
Change-Id: I59a0756940d1e5360a2ab4e886cf0bc9af7b8901 Reviewed-on: https://cl.tvl.fyi/c/depot/+/7133 Autosubmit: sterni <sternenseemann@systemli.org> Tested-by: BuildkiteCI Reviewed-by: tazjin <tazjin@tvl.su>
2022-10-29 r/5222 feat(tvix/eval): Implement builtins.sortGriffin Smith2-0/+0
This is a bit tricky because the comparator can throw errors, so we need to propagate them out if they exist and try to avoid sorting forever by returning a reasonable ordering in this case (as short-circuiting is not available). Co-Authored-By: Vincent Ambo <tazjin@tvl.su> Change-Id: Icae1d30f43ec1ae64b2ba51e73ee467605686792 Reviewed-on: https://cl.tvl.fyi/c/depot/+/7072 Tested-by: BuildkiteCI Reviewed-by: sterni <sternenseemann@systemli.org>
2022-10-29 r/5221 feat(tvix/eval): Implement comparison for listsGriffin Smith2-0/+18
Lists are compared lexicographically in C++ nix as of [0], and our updated nix test suites depend on this. This implements comparison of list values in `Value::nix_cmp` using a very similar algorithm to what C++ does - similarly to there, this requires passing in the VM so we can force thunks in the list elements as we go. [0]: https://github.com/NixOS/nix/commit/09471d2680292af48b2788108de56a8da755d661# Change-Id: I5d8bb07f90647a1fec83f775243e21af856afbb1 Reviewed-on: https://cl.tvl.fyi/c/depot/+/7070 Autosubmit: grfn <grfn@gws.fyi> Reviewed-by: sterni <sternenseemann@systemli.org> Tested-by: BuildkiteCI
2022-10-28 r/5219 feat(tvix/eval): add builtins.replaceStringsJames Landrein4-0/+6
Change-Id: I93dcdaeb101364ee2273bcaeb19acb57cf6b9e7d Reviewed-on: https://cl.tvl.fyi/c/depot/+/7034 Autosubmit: j4m3s <james.landrein@gmail.com> Reviewed-by: Adam Joseph <adam@westernsemico.com> Reviewed-by: tazjin <tazjin@tvl.su> Tested-by: BuildkiteCI
2022-10-26 r/5199 feat(tvix/eval): include filename of failing test when failingAdam Joseph1-5/+5
Unfortunately we have to mangle test case filenames into rust-valid symbols, since test-generator doesn't use `r#"..."` (deliberately?). This means that when a test fails, there's nothing on the console you can copy-and-paste in order to view/edit the code of the failing test case. This commit (partially) fixes it by including the unmangled name in the panic!() string. However failures due to panic!()s inside the vm (including deliberate panics due to panic!()-debugging) still won't display an unmangled filename. Maybe we should reconsider the use of test-generator? Change-Id: I2208a859ffab1264f17f48fd303ff5e19675967e Signed-off-by: Adam Joseph <adam@westernsemico.com> Reviewed-on: https://cl.tvl.fyi/c/depot/+/7092 Tested-by: BuildkiteCI Reviewed-by: tazjin <tazjin@tvl.su>
2022-10-25 r/5198 feat(tvix/eval): add builtins.{floor,ceil}James Landrein4-0/+4
Change-Id: I4e6c4f96f6f5097a5c637eb3dbbd7bb8b34b7d52 Reviewed-on: https://cl.tvl.fyi/c/depot/+/7032 Autosubmit: j4m3s <james.landrein@gmail.com> Tested-by: BuildkiteCI Reviewed-by: tazjin <tazjin@tvl.su> Reviewed-by: grfn <grfn@gws.fyi>
2022-10-24 r/5192 feat(tvix/eval): Implement builtins.mapAttrsGriffin Smith2-0/+0
I played around a little bit with doing this in-place, but ended up going with this perhaps slightly clone-heavy approach for now because ideally most clones on Value are cheap - but later we should benchmark alternate approaches that get to reuse allocations better if necessary or possible. Change-Id: If998eb2056cedefdf2fb480b0568ac8329ccfc44 Reviewed-on: https://cl.tvl.fyi/c/depot/+/7068 Autosubmit: grfn <grfn@gws.fyi> Reviewed-by: tazjin <tazjin@tvl.su> Tested-by: BuildkiteCI
2022-10-24 r/5190 feat(tvix/eval): implement builtins.currentSystemAdam Joseph2-0/+0
This commit implements builtins.currentSystem, by capturing the cargo environment variable `TARGET` and exposing it to rustc as `TVIX_CURRENT_SYSTEM` so it can be inserted into the source code using `env!()`. The resulting value needs to be massaged a bit, since it is an "LLVM triple". The current code should work for all the platforms for which cppnix works (thanks qyliss for generating the list!). It does *not* reject all of the triples that cppnix's configure.ac rejects -- it is much more forgiving. We can tighten this up in a future commit. Signed-off-by: Adam Joseph <adam@westernsemico.com> Change-Id: I947f504b2af5a7fee8cf0cb301421d2fc9174ce1 Reviewed-on: https://cl.tvl.fyi/c/depot/+/6986 Tested-by: BuildkiteCI Reviewed-by: tazjin <tazjin@tvl.su>
2022-10-23 r/5185 test(tvix/eval): add a test case for nested sibling accessVincent Ambo2-0/+8
Change-Id: I3898284bc4871e5483ead0c27e0f2832d66f2b29 Reviewed-on: https://cl.tvl.fyi/c/depot/+/7061 Tested-by: BuildkiteCI Reviewed-by: grfn <grfn@gws.fyi>
2022-10-22 r/5176 test(tvix/eval): add a test for observing an infinite attribute setVincent Ambo2-0/+5
Note that this test (ironically) fails if the observer is used (e.g. with --trace-runtime), but that's a separate issue. Change-Id: I952eaeac8b5a7acce9c66cd4744ec570280748e7 Reviewed-on: https://cl.tvl.fyi/c/depot/+/7055 Reviewed-by: grfn <grfn@gws.fyi> Tested-by: BuildkiteCI
2022-10-22 r/5175 feat(tvix/eval): Implement builtins.deepSeqGriffin Smith5-0/+3
This is done via a new `deepForce` function on Value. Since values can be cyclical (for example, see the test-case), we need to do some extra work to avoid RefCell borrow errors if we ever hit a graph cycle: While deep-forcing values, we keep a set of thunks that we have already seen and avoid doing any work on the same thunk twice. The set is encapsulated in a separate type to stop potentially invalid pointers from leaking out. Finally, since deep_force is conceptually similar to `VM::force_for_output` (but more suited to usage in eval since it doesn't clone the values) this removes the latter, replacing it with the former. Co-Authored-By: Vincent Ambo <tazjin@tvl.su> Change-Id: Iefddefcf09fae3b6a4d161a5873febcff54b9157 Reviewed-on: https://cl.tvl.fyi/c/depot/+/7000 Tested-by: BuildkiteCI Reviewed-by: grfn <grfn@gws.fyi> Reviewed-by: tazjin <tazjin@tvl.su>
2022-10-22 r/5174 fix(tvix/eval): use top-level span for `force_with_output`Vincent Ambo2-0/+2
When forcing thunks in `force_with_output`, the call stack of the VM is actually empty (as the calls are synthetic and no longer part of the evaluation of the top-level expression). This means that Tvix crashed when constructing error spans for the `fallible` macro, as the assumption of there being an enclosing span was violated. To work around this, we instead pass the span for the whole top-level expression to force_for_output and set this as the span for the enclosing error chain. Existing output logic will already avoid printing the entire expression as an error span. This fixes b/213. Change-Id: I93978e0deaf5bcb0f47a6fa95b3f5bebef5bad4c Reviewed-on: https://cl.tvl.fyi/c/depot/+/7052 Autosubmit: tazjin <tazjin@tvl.su> Tested-by: BuildkiteCI Reviewed-by: grfn <grfn@gws.fyi>
2022-10-20 r/5168 fix(tvix/eval): restore .exp.xml files and skip in test suitesterni3-0/+7
Change-Id: Iebda5e0d99925a0a8c1d6ae1d7a35397d127bf31 Reviewed-on: https://cl.tvl.fyi/c/depot/+/7047 Autosubmit: sterni <sternenseemann@systemli.org> Reviewed-by: tazjin <tazjin@tvl.su> Tested-by: BuildkiteCI
2022-10-20 r/5167 fix(tvix/eval): fix path in notyetpassing testssterni4-4/+4
cl/7036 moved these paths around, but neglected to update the relative paths they contain. Without these updated, they will never start passing! Change-Id: Ib16468611af59729883e501be8486f43d850fd58 Reviewed-on: https://cl.tvl.fyi/c/depot/+/7046 Autosubmit: sterni <sternenseemann@systemli.org> Tested-by: BuildkiteCI Reviewed-by: tazjin <tazjin@tvl.su>
2022-10-20 r/5166 test(tvix/eval): eval-okay-eq.nix can actually be testedsterni3-1/+1
eval-okay-eq.nix is actually an ancient test case that used the ATerm syntax for the test result. It was disabled for a while, since the behavior got reverted for a bit, but works on any reasonably modern Nix implementation. This change matches my [C++ Nix PR]. [C++ Nix PR]: https://github.com/NixOS/nix/pull/7196 Change-Id: I602fd7c83a0bc104ab502c8b6a74e4591272be1a Reviewed-on: https://cl.tvl.fyi/c/depot/+/7045 Autosubmit: sterni <sternenseemann@systemli.org> Tested-by: BuildkiteCI Reviewed-by: tazjin <tazjin@tvl.su>
2022-10-20 r/5165 fix(tvix/eval): eval-okay-pathexists test can be executedsterni2-0/+0
Change-Id: Ibdcaa165024584370ce9578e67985a3526e44f77 Reviewed-on: https://cl.tvl.fyi/c/depot/+/7044 Autosubmit: sterni <sternenseemann@systemli.org> Tested-by: BuildkiteCI Reviewed-by: tazjin <tazjin@tvl.su>
2022-10-20 r/5164 test(tvix/eval): update C++ Nix test suite to current mastersterni22-31/+85
The language test suite actually doesn't require flakes and the new features are mostly sensible (added builtins) as well as some tests for regressions the C++ implementation experienced. The path interpolation test is not included in this update because there is no way to construct an location-independent .exp file for it (the C++ repo also doesn't have one). We may still want to implement that feature eventually (in case rnix adds support for it). The C++ Nix revision used is ac0fb38e8a5a25a84fa17704bd31b453211263eb. Change-Id: I75f1e780ddeeee6f6b1f28cf3c66c288dca2c20c Reviewed-on: https://cl.tvl.fyi/c/depot/+/7043 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 Joseph73-14/+48
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
2022-10-18 r/5156 fix(tvix/eval): wrap dynamic resolution in an extra thunkVincent Ambo3-1/+7
Without this change it was possible to cause situations (see the new test) in which a `with`-namespace was forced prematurely. Change-Id: I879ea7763b43edc693feace2c73c890d426fafd3 Reviewed-on: https://cl.tvl.fyi/c/depot/+/7031 Autosubmit: tazjin <tazjin@tvl.su> Tested-by: BuildkiteCI Reviewed-by: Adam Joseph <adam@westernsemico.com>
2022-10-17 r/5155 feat(nix/eval): Implement builtins.functionArgsGriffin Smith2-0/+81
Now that we're tracking formals on Lambda this ends up being quite easy; we just pull them off of the Lambda for the argument closure and use them to construct the result attribute set. Change-Id: I811cb61ec34c6bef123a4043000b18c0e4ea0125 Reviewed-on: https://cl.tvl.fyi/c/depot/+/7003 Reviewed-by: tazjin <tazjin@tvl.su> Tested-by: BuildkiteCI
2022-10-17 r/5154 feat(tvix/eval): Validate closed formalsGriffin Smith1-0/+1
Validate "closed formals" (formal parameters without an ellipsis) via a new ValidateClosedFormals op, which checks the arguments (in an attr set at the top of the stack) against the formal parameters on the Lambda in the current frame, and returns a new UnexpectedArgument error (including the span of the formals themselves!!) if any arguments aren't allowed Change-Id: Idcc47a59167a83be1832a6229f137d84e426c56c Reviewed-on: https://cl.tvl.fyi/c/depot/+/7002 Reviewed-by: tazjin <tazjin@tvl.su> Tested-by: BuildkiteCI
2022-10-17 r/5152 feat(tvix/eval): Implement builtins.seqGriffin Smith3-0/+3
Since we already have infra for forcing arguments to builtins, this ends up being almost *too* simple - we just return the second argument! Change-Id: I070d3d0b551c4dcdac095f67b31e22e0de90cbd7 Reviewed-on: https://cl.tvl.fyi/c/depot/+/6999 Reviewed-by: kanepyork <rikingcoding@gmail.com> Reviewed-by: tazjin <tazjin@tvl.su> Tested-by: BuildkiteCI
2022-10-16 r/5148 feat(tvix/eval): implement builtins.partitionJames Landrein2-0/+14
Change-Id: I8b591f3057c68c1542046fc5a771973f2238c9df Reviewed-on: https://cl.tvl.fyi/c/depot/+/7020 Autosubmit: j4m3s <james.landrein@gmail.com> Reviewed-by: tazjin <tazjin@tvl.su> Tested-by: BuildkiteCI
2022-10-16 r/5141 fix(tvix/eval): don't coerce variable name to stringsterni1-0/+1
Change-Id: I8aa878dee009901feb453c489ce37c12fa3a31a8 Reviewed-on: https://cl.tvl.fyi/c/depot/+/7026 Autosubmit: sterni <sternenseemann@systemli.org> Reviewed-by: Adam Joseph <adam@westernsemico.com> Reviewed-by: tazjin <tazjin@tvl.su> Tested-by: BuildkiteCI
2022-10-15 r/5137 feat(tvix/eval): Implement builtins.intersectAttrsGriffin Smith2-0/+4
Change-Id: Iaba9bcfa19f283cd0c1931be2f211e2528a1a940 Reviewed-on: https://cl.tvl.fyi/c/depot/+/6998 Tested-by: BuildkiteCI Reviewed-by: tazjin <tazjin@tvl.su> Reviewed-by: kanepyork <rikingcoding@gmail.com>
2022-10-15 r/5136 feat(tvix/eval): Initial impl of builtins.matchGriffin Smith2-0/+30
Implement an *initial* version of builtins.match, using the rust `regex` crate for regular expressions. The rust regex crate definitely has different semantics than nix's regular expressions - but we'd like to see how far we can get before the incompatibility starts to matter. This consciously leaves out any sort of memo for compiled regular expressions (which upstream nix also has) for the sake of expediency - in the future we should implement that so we don't have to compile the same regular expression multiple times. Change-Id: I5b718635831ec83397940e417a9047c4342b6fa1 Reviewed-on: https://cl.tvl.fyi/c/depot/+/6989 Tested-by: BuildkiteCI Reviewed-by: Adam Joseph <adam@westernsemico.com> Reviewed-by: tazjin <tazjin@tvl.su>
2022-10-15 r/5135 feat(tvix/eval): Implement builtins.fromJSONGriffin Smith4-0/+28
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>
2022-10-15 r/5133 fix(tvix/eval): bring foldl' strictness in line with C++ Nixsterni5-0/+9
Working on https://github.com/NixOS/nix/pull/7158, I discovered that C++ Nix actually is strict in the accumulator, just not in the first value. This seems due to the fact that in the C++ evaluator, function calls don't seem to be thunked unconditionally and foldl' just elects not to wrap it in a thunk (don't quote me on this summary, even though it seems to line up with the code for primop_foldlStrict and testable behavior). It doesn't seem worth it to risk breaking the odd Nix expression just to be strict in one more value per invocation of foldl' (i.e. the initial accumulator value `nul`), so let's match the existing C++ Nix behavior here. Change-Id: If59e62271a90d97cb440f0ca72a58ec7840d1690 Reviewed-on: https://cl.tvl.fyi/c/depot/+/7022 Autosubmit: sterni <sternenseemann@systemli.org> Tested-by: BuildkiteCI Reviewed-by: tazjin <tazjin@tvl.su>