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2024-01-31 r/7460 fix(tvix): Represent strings as byte arraysAspen Smith4-66/+97
C++ nix uses C-style zero-terminated char pointers to represent strings internally - however, up to this point, tvix has used Rust `String` and `str` for string values. Since those are required to be valid utf-8, we haven't been able to properly represent all the string values that Nix supports. To fix that, this change converts the internal representation of the NixString struct from `Box<str>` to `BString`, from the `bstr` crate - this is a wrapper around a `Vec<u8>` with extra functions for treating that byte vector as a "morally string-like" value, which is basically exactly what we need. Since this changes a pretty fundamental assumption about a pretty core type, there are a *lot* of changes in a lot of places to make this work, but I've tried to keep the general philosophy and intent of most of the code in most places intact. Most notably, there's nothing that's been done to make the derivation stuff in //tvix/glue work with non-utf8 strings everywhere, instead opting to just convert to String/str when passing things into that - there *might* be something to be done there, but I don't know what the rules should be and I don't want to figure them out in this change. To deal with OS-native paths in a way that also works in WASM for tvixbolt, this also adds a dependency on the "os_str_bytes" crate. Fixes: b/189 Fixes: b/337 Change-Id: I5e6eb29c62f47dd91af954f5e12bfc3d186f5526 Reviewed-on: https://cl.tvl.fyi/c/depot/+/10200 Reviewed-by: tazjin <tazjin@tvl.su> Reviewed-by: flokli <flokli@flokli.de> Reviewed-by: sterni <sternenseemann@systemli.org> Autosubmit: aspen <root@gws.fyi> Tested-by: BuildkiteCI
2024-01-25 r/7448 feat(tvix/eval): track pattern binding namesFlorian Klink1-2/+9
These need to be preserved at least for builtins.toXML. Also, we incorrectly only wrote an <attrspat> in case ellipsis was true, but that's not the case. Change-Id: I6bff9c47c2922f878d5c43e48280cda9c9ddb692 Reviewed-on: https://cl.tvl.fyi/c/depot/+/10686 Tested-by: BuildkiteCI Autosubmit: flokli <flokli@flokli.de> Reviewed-by: aspen <root@gws.fyi>
2024-01-24 r/7446 feat(tvix/eval): expose value_to_xml for test casesFlorian Klink2-1/+4
It's debateable on whether the serialization code should be exposed a bit more prominently or not. Change-Id: Iff7a28f884b1490b12b145dfdadbedacb84fd387 Reviewed-on: https://cl.tvl.fyi/c/depot/+/10684 Tested-by: BuildkiteCI Reviewed-by: sterni <sternenseemann@systemli.org> Reviewed-by: tazjin <tazjin@tvl.su>
2024-01-17 r/7406 fix(tvix/eval): catchable-aware `throw`Ryan Lahfa1-0/+4
`throw (throw "a")` should work and propagate the internal throw. Before this commit, it didn't work. Change-Id: Id5d46f74e484dba99e912ad9fa211f3bf1617bac Reviewed-on: https://cl.tvl.fyi/c/depot/+/10600 Tested-by: BuildkiteCI Reviewed-by: flokli <flokli@flokli.de>
2024-01-17 r/7405 fix(tvix/eval): catchable-aware `elem`Ryan Lahfa1-0/+4
`elem` did not catch the list being a catchable. This surfaced during Nixpkgs evaluation. Change-Id: Icf19b94e914e35a435c4412d769ee63ba59ab7b0 Reviewed-on: https://cl.tvl.fyi/c/depot/+/10599 Reviewed-by: flokli <flokli@flokli.de> Tested-by: BuildkiteCI
2024-01-17 r/7403 fix(tvix/eval): `getContext` merges underlying valuesRyan Lahfa1-17/+65
Previously, we were assembling very naively an attribute set composed of context we saw. But it was forgetting that `"${drv}${drv.drvPath}"` would contain 2 contexts with the same key, but with different values, one with `outputs = [ "out" ];` and `allOutputs = true;`. Following this reasoning and comparing with what Nix does, we ought to merge underlying values systematically. Hence, I bring `itertools` to perform a group by on the key and merge everything on the fly, it's not beautiful but it's the best I could find, notice that I don't use `group_by` but I talk about group by, that is, because `group_by` is a `group_by_consecutive`, see https://github.com/rust-itertools/itertools/issues/374. Initially, I tried to do it without a `into_grouping_map_by`, it was akin to assemble the final `NixAttrs` directly, it was less readable and harder to pull out because we don't have a lot of in-place mutable functions on our data structures. Change-Id: I9933c9bd88ffe04de50dda14f21879b60d8b8cd4 Reviewed-on: https://cl.tvl.fyi/c/depot/+/10620 Tested-by: BuildkiteCI Reviewed-by: tazjin <tazjin@tvl.su>
2024-01-17 r/7400 fix(tvix/eval): context-aware `dirOf`Ryan Lahfa1-1/+1
`dirOf` forgot to accepts contextful strings, e.g. derivations and propagates this context further. Change-Id: I6c05944a3ce5073e243e7676c9be56c48407d657 Reviewed-on: https://cl.tvl.fyi/c/depot/+/10618 Reviewed-by: flokli <flokli@flokli.de> Tested-by: BuildkiteCI
2024-01-17 r/7399 fix(tvix/eval): context-aware… `hasContext`Ryan Lahfa1-1/+1
Yes, `hasContext e` should work where `e` is a contextful strings, otherwise, it is really useless. Change-Id: I5eb071fc257217d6e8a63fe519132ebd98186696 Reviewed-on: https://cl.tvl.fyi/c/depot/+/10617 Tested-by: BuildkiteCI Reviewed-by: flokli <flokli@flokli.de>
2024-01-14 r/7379 fix(tvix/eval): catchable-aware builtinsRyan Lahfa1-0/+235
A bunch of operations in Tvix are not aware of catchable values and does not propagate them. In the meantime, as we wait for a better solution, we just offer this commit for moving the needle. Change-Id: Ic3f0e1550126b0847b597dfc1402c35e0eeef469 Reviewed-on: https://cl.tvl.fyi/c/depot/+/10473 Tested-by: BuildkiteCI Reviewed-by: tazjin <tazjin@tvl.su>
2024-01-03 r/7340 feat(tvix/eval): context-aware `split`Ryan Lahfa1-5/+14
Nix does something like: ```cpp NixStringContext context; const auto str = state.forceString(*args[1], context, pos, "while evaluating the second argument passed to builtins.split"); ``` And then do nothing with that context, therefore, we follow them and make `split` aware of the context but still do nothing with it. Change-Id: I4fee1936600ce86d99d00893ca3f64013213935b Reviewed-on: https://cl.tvl.fyi/c/depot/+/10428 Tested-by: BuildkiteCI Reviewed-by: tazjin <tazjin@tvl.su> Autosubmit: raitobezarius <tvl@lahfa.xyz>
2024-01-03 r/7339 feat(tvix/eval): impl `unsafeDiscardStringContext`Ryan Lahfa1-4/+19
Change-Id: I7f0cc42cbebfe5cd27bf6d4f58a4af927b83646a Reviewed-on: https://cl.tvl.fyi/c/depot/+/10423 Autosubmit: raitobezarius <tvl@lahfa.xyz> Reviewed-by: tazjin <tazjin@tvl.su> Tested-by: BuildkiteCI
2024-01-03 r/7332 feat(tvix/eval): `match` DO NOT propagate contextRyan Lahfa1-6/+13
`match` silently ignore the input context and do not propagate it and successful matches. The why is unclear but nixpkgs does rely implicitly on this behavior because dynamic attribute selection cannot be done with contextful strings. Change-Id: I5167fa9b2c2db8ecab0c2fb3e9895c9cfce6eeb2 Reviewed-on: https://cl.tvl.fyi/c/depot/+/10441 Autosubmit: raitobezarius <tvl@lahfa.xyz> Tested-by: BuildkiteCI Reviewed-by: tazjin <tazjin@tvl.su>
2024-01-03 r/7331 feat(tvix/eval): implement `getContext` primopRyan Lahfa1-0/+43
Change-Id: I2c5068a28f9883a01b0ff80a5e5ab32ba18bfc1a Reviewed-on: https://cl.tvl.fyi/c/depot/+/10437 Reviewed-by: tazjin <tazjin@tvl.su> Autosubmit: raitobezarius <tvl@lahfa.xyz> Tested-by: BuildkiteCI
2024-01-03 r/7330 feat(tvix/eval): context-aware `replaceStrings`Ryan Lahfa1-6/+23
And it also preserve the original context if it exists. Change-Id: I904f7c13b7f003a267aace6301723780fccaafb7 Reviewed-on: https://cl.tvl.fyi/c/depot/+/10434 Tested-by: BuildkiteCI Reviewed-by: tazjin <tazjin@tvl.su> Autosubmit: raitobezarius <tvl@lahfa.xyz>
2024-01-03 r/7329 chore(tvix/eval): note on context-aware `hashString`Ryan Lahfa1-0/+1
It must propagate context too. Change-Id: If57c22c9723ea02aa013f69d3dcf96054476d8de Reviewed-on: https://cl.tvl.fyi/c/depot/+/10433 Tested-by: BuildkiteCI Autosubmit: raitobezarius <tvl@lahfa.xyz> Reviewed-by: tazjin <tazjin@tvl.su>
2024-01-03 r/7327 feat(tvix/eval): context-aware `concatStringsSep`Ryan Lahfa1-3/+19
Change-Id: Id0e169084d26dc598091d157563c4d959b66279b Reviewed-on: https://cl.tvl.fyi/c/depot/+/10431 Autosubmit: raitobezarius <tvl@lahfa.xyz> Tested-by: BuildkiteCI Reviewed-by: tazjin <tazjin@tvl.su>
2024-01-03 r/7326 chore(tvix/eval): note on context-aware `toString`Ryan Lahfa1-0/+2
Change-Id: Ie26ebd16e95e6a7b6f81051d8269169842978058 Reviewed-on: https://cl.tvl.fyi/c/depot/+/10430 Tested-by: BuildkiteCI Reviewed-by: tazjin <tazjin@tvl.su> Autosubmit: raitobezarius <tvl@lahfa.xyz>
2024-01-03 r/7325 feat(tvix/eval): context-aware `throw`Ryan Lahfa1-1/+2
Change-Id: Ie552dabe4cf93cc396c883268a3bee67796dbbd8 Reviewed-on: https://cl.tvl.fyi/c/depot/+/10429 Autosubmit: raitobezarius <tvl@lahfa.xyz> Tested-by: BuildkiteCI Reviewed-by: tazjin <tazjin@tvl.su>
2024-01-03 r/7324 feat(tvix/eval): context-aware `substring`Ryan Lahfa1-3/+6
`substring` has a very funny behavior when it comes to empty strings, it propagates the context too, this is used in nixpkgs to attach context to strings without using any builtin: `lib.addContextFrom`. Change-Id: Id655356799b3485f7519b3d1914c630f9d8416c3 Reviewed-on: https://cl.tvl.fyi/c/depot/+/10448 Autosubmit: raitobezarius <tvl@lahfa.xyz> Reviewed-by: tazjin <tazjin@tvl.su> Tested-by: BuildkiteCI
2024-01-03 r/7323 feat(tvix/eval): context-aware `abort`Ryan Lahfa1-1/+5
Change-Id: Id5a435961ce3a2a2240b3936ea48515650d445d6 Reviewed-on: https://cl.tvl.fyi/c/depot/+/10427 Autosubmit: raitobezarius <tvl@lahfa.xyz> Reviewed-by: tazjin <tazjin@tvl.su> Tested-by: BuildkiteCI
2024-01-03 r/7320 feat(tvix/eval): context-aware `dirOf`Ryan Lahfa1-1/+3
Change-Id: If73a82a7106de9b479c950741efb70bffabd470a Reviewed-on: https://cl.tvl.fyi/c/depot/+/10424 Reviewed-by: tazjin <tazjin@tvl.su> Autosubmit: raitobezarius <tvl@lahfa.xyz> Tested-by: BuildkiteCI
2024-01-03 r/7319 feat(tvix/eval): context-aware `baseNameOf`Ryan Lahfa1-2/+5
Change-Id: I9f0a8143070805b85276f721bdfbdf7ede2cf615 Reviewed-on: https://cl.tvl.fyi/c/depot/+/10421 Reviewed-by: tazjin <tazjin@tvl.su> Autosubmit: raitobezarius <tvl@lahfa.xyz> Tested-by: BuildkiteCI
2023-12-29 r/7281 feat(tvix/eval): implement `hasContext` primopRyan Lahfa1-4/+3
`hasContext` is now functional. Change-Id: I23b128afc9150b833bc0d9b042d31fee35badadb Reviewed-on: https://cl.tvl.fyi/c/depot/+/10422 Tested-by: BuildkiteCI Autosubmit: raitobezarius <tvl@lahfa.xyz> Reviewed-by: tazjin <tazjin@tvl.su>
2023-12-29 r/7277 fix(tvix/eval): propagate catchables through builtins.attrNamesAdam Joseph1-0/+3
Change-Id: Id14e39543239272aed041998fd9a78465c9cb8b2 Reviewed-on: https://cl.tvl.fyi/c/depot/+/10359 Autosubmit: Adam Joseph <adam@westernsemico.com> Reviewed-by: sterni <sternenseemann@systemli.org> Tested-by: BuildkiteCI
2023-12-29 r/7276 fix(tvix/eval): propagate catchables through builtins.intersectAttrsAdam Joseph1-0/+6
Change-Id: I4ada8cf10611e98519cb1b1da11bfd06815f2932 Reviewed-on: https://cl.tvl.fyi/c/depot/+/10358 Autosubmit: Adam Joseph <adam@westernsemico.com> Reviewed-by: sterni <sternenseemann@systemli.org> Tested-by: BuildkiteCI
2023-12-29 r/7274 fix(tvix/eval): catchable in type field of nix_eq()Adam Joseph1-4/+11
Change-Id: I165ff77764e272cc94d18cb03ad6cbc9a8ebefde Reviewed-on: https://cl.tvl.fyi/c/depot/+/10348 Autosubmit: Adam Joseph <adam@westernsemico.com> Reviewed-by: sterni <sternenseemann@systemli.org> Tested-by: BuildkiteCI
2023-12-29 r/7273 fix(tvix/eval): builtins.match: propagate catchablesAdam Joseph1-2/+10
Change-Id: I14c9e625c91369e10d0c00380dca992811ae9059 Reviewed-on: https://cl.tvl.fyi/c/depot/+/10346 Reviewed-by: sterni <sternenseemann@systemli.org> Autosubmit: Adam Joseph <adam@westernsemico.com> Tested-by: BuildkiteCI
2023-12-14 r/7218 fix(tvix/eval): remove incorrect imports when coercingsterni1-14/+79
The default behavior of string coercion in C++ Nix is to weakly coerce and import to store if necessary. There is a flag to make it strongly coerce (coerceMore) and a flag that controls whether path values have the corresponding file/directory imported into the store before returning the (store) path as a string (copyToStore). We need to implement our equivalent to the copyToStore (import_paths) flag for the benefit of weak coercions that don't import into the store (dirOf, baseNameOf, readFile, ...) and strong coercions that don't import into the store (toString). This makes coerce_to_string as well as CoercionKind weirder and more versatile, but prevents us from reimplementing parts of the coercion logic constantly as can be seen in the case of baseNameOf. Note that it is not possible to test this properly in //tvix/eval tests due to the lack of an appropriate EvalIO implementation being available. Tests should be added to //tvix/glue down the line. Change-Id: I8fb8ab99c7fe08e311d2ba1c36960746bf22f566 Reviewed-on: https://cl.tvl.fyi/c/depot/+/10361 Autosubmit: sterni <sternenseemann@systemli.org> Tested-by: BuildkiteCI Reviewed-by: Adam Joseph <adam@westernsemico.com>
2023-12-12 r/7205 fix(tvix/eval): substring: propagate catchablesAdam Joseph1-4/+5
Change-Id: Ia9b7858c817fbc9c95a3d1c2855b2445f7830e8d Reviewed-on: https://cl.tvl.fyi/c/depot/+/10326 Tested-by: BuildkiteCI Autosubmit: Adam Joseph <adam@westernsemico.com> Reviewed-by: tazjin <tazjin@tvl.su>
2023-12-12 r/7204 fix(tvix/eval): baseNameOf: propagate catchablesAdam Joseph1-0/+1
Change-Id: Id8dc772ea8f338dfd243210f4108f79072570c3b Reviewed-on: https://cl.tvl.fyi/c/depot/+/10324 Autosubmit: Adam Joseph <adam@westernsemico.com> Tested-by: BuildkiteCI Reviewed-by: tazjin <tazjin@tvl.su>
2023-12-12 r/7203 fix(tvix/eval): builtins.length: propagate catchablesAdam Joseph1-0/+3
This commit fixes out builtins.length so it propagates catchables like cppnix does. Change-Id: I7670bec5eee1d4cd3f67a04c9a6808979fb56a8d Reviewed-on: https://cl.tvl.fyi/c/depot/+/10315 Reviewed-by: tazjin <tazjin@tvl.su> Autosubmit: Adam Joseph <adam@westernsemico.com> Tested-by: BuildkiteCI
2023-12-12 r/7201 fix(tvix/eval): builtins.filter: propagate catchablesAdam Joseph1-2/+5
This commit fixes builtins.filter so it propagates catchables correctly. Change-Id: Ib23a383bc5e272e42052205ffd1e94649a0ebc47 Reviewed-on: https://cl.tvl.fyi/c/depot/+/10313 Autosubmit: Adam Joseph <adam@westernsemico.com> Tested-by: BuildkiteCI Reviewed-by: tazjin <tazjin@tvl.su>
2023-12-12 r/7200 feat(tvix/eval): builtins.hashString: add placeholderAdam Joseph1-0/+12
This adds an unimplemented placeholder for builtins.hashString. Change-Id: Ibc770103acf5dbc3ea7589ab5ca23fe6e07bd91a Reviewed-on: https://cl.tvl.fyi/c/depot/+/10311 Reviewed-by: tazjin <tazjin@tvl.su> Tested-by: BuildkiteCI Autosubmit: Adam Joseph <adam@westernsemico.com>
2023-12-12 r/7199 fix(tvix/eval): builtins.getAttr: propagate catchablesAdam Joseph1-0/+6
Change-Id: I84b6b8f8568d57614a03aff0d6069e0bc27357bf Reviewed-on: https://cl.tvl.fyi/c/depot/+/10310 Reviewed-by: tazjin <tazjin@tvl.su> Tested-by: BuildkiteCI Autosubmit: Adam Joseph <adam@westernsemico.com>
2023-12-12 r/7198 fix(tvix/eval): builtins.elemAt: propagate catchablesAdam Joseph1-0/+6
This commit fixes builtins.elemAt so it propagates catchables like cppnix does. Change-Id: Ieca5e128da17e78af0b14dae4a28a1ff8796e4f2 Reviewed-on: https://cl.tvl.fyi/c/depot/+/10308 Autosubmit: Adam Joseph <adam@westernsemico.com> Tested-by: BuildkiteCI Reviewed-by: tazjin <tazjin@tvl.su>
2023-12-12 r/7196 fix(tvix/eval): propagate catchables through builtins.splitVersionAdam Joseph1-0/+3
This fixes our implementation of builtins.splitVersion so it propagates catchables like cppnix does. Change-Id: Id5d83ea76229f8c8f202aa42353cb609e67de43f Reviewed-on: https://cl.tvl.fyi/c/depot/+/10305 Autosubmit: Adam Joseph <adam@westernsemico.com> Tested-by: BuildkiteCI Reviewed-by: tazjin <tazjin@tvl.su>
2023-12-12 r/7195 feat(tvix/eval): builtins.hasContext: placeholder implementationAdam Joseph1-0/+8
Currently this just `throw`s a message explaining that it is not implemented. This is necessary in order to allow enumerating the nixpkgs release attrset (afaict only one package uses this builtin). Change-Id: I45266d46af579ddb5856b192b6be4b481369543c Reviewed-on: https://cl.tvl.fyi/c/depot/+/10302 Autosubmit: Adam Joseph <adam@westernsemico.com> Tested-by: BuildkiteCI Reviewed-by: tazjin <tazjin@tvl.su>
2023-12-12 r/7194 fix(tvix/eval): baseNameOf should not coerce paths into stringsAdam Joseph1-4/+12
... since this may import them to the store which changes their basename. Fixes b/350. Change-Id: Iabd08ff4d6a424c66d6d7784d7a96b0c078f0a91 Reviewed-on: https://cl.tvl.fyi/c/depot/+/10298 Reviewed-by: tazjin <tazjin@tvl.su> Tested-by: BuildkiteCI Autosubmit: Adam Joseph <adam@westernsemico.com>
2023-12-12 r/7193 fix(tvix/eval): add unimplemented __curPos and builtins.filterSourceAdam Joseph1-0/+17
This commit adds __curPos (to the global scope, yuck) and builtins.filterSource. These are not implemented; forcing them will produce the same result as `throw "message"`. Unfortunately these two post-2.3 features are used throughout nixpkgs. Since an unresolved indentifier is a catchable error, this breaks the entire release eval. With this commit, it simply causes those broken packages that use these features to appear as they are: broken. Change-Id: Ib43dea571f6a9fab4d54869349f80ee4ec5424c2 Reviewed-on: https://cl.tvl.fyi/c/depot/+/10297 Reviewed-by: tazjin <tazjin@tvl.su> Tested-by: BuildkiteCI Autosubmit: Adam Joseph <adam@westernsemico.com>
2023-12-12 r/7176 feat(tvix/eval): nonrecursive coerce_to_string()Adam Joseph1-6/+21
After this commit, the only non-builtins uses of generators are: - coerce_to_string() uses generators::request_enter_lambda() - Thunk::force() uses generators::request_enter_lambda() That's it! Once those two are taken care of, GenCo can become an implementation detail of `builtins::BuiltinGen`. No more crazy nonlocal flow control within the interpreter: if you've got a GenCo floating around in your code it's because you're writing a builtin, which isn't part of the core interpreter. The interpreter won't need GenCos to talk to itself anymore. Technically generators::request_path_import() is also used by coerce_to_string(), but that's just because the io_handle happens to be part of the VM. There's no recursion-depth issue there, so the call doesn't need to go through the generator mechanism (request_path_import() doesn't call back to the interpreter!) Change-Id: I83ce5774d49b88fdafdd61160975b4937a435bb0 Reviewed-on: https://cl.tvl.fyi/c/depot/+/10256 Reviewed-by: tazjin <tazjin@tvl.su> Tested-by: BuildkiteCI Autosubmit: Adam Joseph <adam@westernsemico.com>
2023-12-12 r/7175 feat(tvix/eval): nonrecursive deep_force()Adam Joseph1-3/+3
This commit implements deep_force() nonrecursively, by maintaining an explicit stack rather than using the call stack for recursion. As an added bonus, we don't need to pass around the SharedThunkSet anymore, and can in fact completely eliminate SharedThunkSet. Change-Id: I7c4f59f37834d451a28bf6be317eb0a90eac4ee6 Reviewed-on: https://cl.tvl.fyi/c/depot/+/10252 Tested-by: BuildkiteCI Reviewed-by: tazjin <tazjin@tvl.su> Autosubmit: Adam Joseph <adam@westernsemico.com>
2023-12-12 r/7169 fix(tvix/eval): preserve catchables in nix_cmp_ordering(), fix b/338Adam Joseph1-4/+5
This commit fixes b/338 by properly propagating catchables through comparison operations. Change-Id: I6b0283a40f228ecf9a6398d24c060bdacb1077cf Reviewed-on: https://cl.tvl.fyi/c/depot/+/10221 Reviewed-by: tazjin <tazjin@tvl.su> Tested-by: BuildkiteCI Autosubmit: Adam Joseph <adam@westernsemico.com>
2023-12-12 r/7167 feat(tvix/eval): nonrecursive nix_cmp_ordering(), fixes b/339Adam Joseph1-1/+2
This commit rewrites Value::nix_cmp_ordering() into an equivalent nonrecursive form. Except for calls to Thunk::force(), the new form no longer uses generators, and is async only because of the fact that it calls Thunk::force(). I originally believed that this commit would make evaluation faster. In fact it is slightly slower. I believe this is due to the added vec![] allocation. I am investigating. Prev-Nixpkgs-Benchmark: {"attrpath":"pkgsCross.aarch64-multiplatform.hello.outPath","peak-kbytes":"460048","system-seconds":"0.68","user-seconds":"5.73"} This-Nixpkgs-Benchmark: {"attrpath":"pkgsCross.aarch64-multiplatform.hello.outPath","peak-kbytes":"460224","system-seconds":"0.67","user-seconds":"5.84"} Change-Id: Ic627bc220d9c5aa3c5e68b9b8bf199837cd55af5 Reviewed-on: https://cl.tvl.fyi/c/depot/+/10212 Reviewed-by: tazjin <tazjin@tvl.su> Tested-by: BuildkiteCI Autosubmit: Adam Joseph <adam@westernsemico.com>
2023-12-12 r/7166 fix(tvix/eval): never use partial_cmp() (partial fix b/338)Adam Joseph1-1/+1
This is part of a fix for b/338. We should never use PartialOrd::partial_cmp(). All Nix types except floats are obviously totally-ordered. In addition, it turns out that because Nix treats division by zero rather than producing a NaN, and because it does not support "negative zero", even floats are in fact totally ordered in Nix. Therefore, every call to PartialOrd::partial_cmp() in tvix is an error. We have to *implement* this function, but we should never call it on built-in types. Moreover, nix_cmp_ordering() currently returns an Option<Ordering>. I'm not sure what was going on there, since it's impossible for it to return None. This commit fixes it to return simply Ordering rather than Option<Ordering>. Change-Id: If5c084164cf19cfb38c5a15554c0422faa5f895d Reviewed-on: https://cl.tvl.fyi/c/depot/+/10218 Autosubmit: Adam Joseph <adam@westernsemico.com> Reviewed-by: tazjin <tazjin@tvl.su> Tested-by: BuildkiteCI
2023-12-05 r/7119 fix(tvix/eval): Return error rather than panicking on bad substringAspen Smith1-1/+1
If builtins.substring is invoked with (byte!!) offsets that aren't at codepoint boundaries, return an error rather than panicking. This is still incorrect (see b/337) but pushes the incorrectness forward a step. Change-Id: I5a4261f2ff250874cd36489ef598dcf886669d04 Reviewed-on: https://cl.tvl.fyi/c/depot/+/10199 Tested-by: BuildkiteCI Autosubmit: grfn <grfn@gws.fyi> Reviewed-by: sterni <sternenseemann@systemli.org>
2023-11-25 r/7065 refactor(tvix/eval): use `or_default` helper in entry APIVincent Ambo1-3/+1
This fixes a future clippy lint. Change-Id: Ic830e94ef23595580c1037f10878c76bbb546dd9 Reviewed-on: https://cl.tvl.fyi/c/depot/+/10110 Tested-by: BuildkiteCI Reviewed-by: Adam Joseph <adam@westernsemico.com>
2023-11-05 r/6955 chore(tvix): fix trivial clippy lintsVincent Ambo1-2/+2
Relates to b/321. Change-Id: I37284f89b186e469eb432e2bbedb37aa125a6ad4 Reviewed-on: https://cl.tvl.fyi/c/depot/+/9961 Tested-by: BuildkiteCI Reviewed-by: flokli <flokli@flokli.de> Autosubmit: tazjin <tazjin@tvl.su>
2023-11-03 r/6930 refactor(tvix/eval): more efficiently intersect attributesVincent Ambo1-9/+70
builtins.intersectAttrs is used a _lot_ in nixpkgs eval, for whatever reason. We previously had a very inefficient implementation that would allocate for each comparison. It stuck out like a sore thumb in perf analysis. This moves to a custom algorithm with two iterators, one for the left and one for the right side, advancing them along the (borrowed) map keys until a match is found and allocation is required. I've not made any effort to reduce the verbosity of this code, I don't think it's worth it. On my machine this reduces the mean runtime of evaluating `nixpkgs.emacs.outPath` by ~8%. Change-Id: Ie506d82cb8d5f45909628f771a6b73e0eca16b27 Reviewed-on: https://cl.tvl.fyi/c/depot/+/9898 Autosubmit: tazjin <tazjin@tvl.su> Tested-by: BuildkiteCI Reviewed-by: flokli <flokli@flokli.de>
2023-09-24 r/6650 fix(tvix/eval): fix b/281 by adding Value::CatchableAdam Joseph3-43/+75
This commit makes catchable errors a variant of Value. The main downside of this approach is that we lose the ability to use Rust's `?` syntax for propagating catchable errors. Change-Id: Ibe89438d8a70dcec29e016df692b5bf88a5cad13 Reviewed-on: https://cl.tvl.fyi/c/depot/+/9289 Reviewed-by: tazjin <tazjin@tvl.su> Autosubmit: Adam Joseph <adam@westernsemico.com> Tested-by: BuildkiteCI
2023-09-24 r/6649 refactor(tvix/eval): factor CatchableErrorKind out of ErrorKindAdam Joseph1-2/+4
This commit creates a separate enum for "catchable" errors (the kind that `builtins.tryEval` can detect). Change-Id: Ie81d1112526d852255d9842f67045f88eab192af Reviewed-on: https://cl.tvl.fyi/c/depot/+/9287 Tested-by: BuildkiteCI Reviewed-by: tazjin <tazjin@tvl.su> Autosubmit: Adam Joseph <adam@westernsemico.com>
generated by cgit-pink 1.4.1 (git 2.44.2) at 2024-12-01T19·55+0000