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2024-02-20 r/7576 refactor(tvix): don't use Rc::clone explicitlyFlorian Klink1-3/+3
All these functions have an Rc of Rc<TvixStoreIO> or Rc<dyn StoreIO>, so we can call io.clone() directly. Change-Id: I96a5bcb9af4aca93892cb72bcfaf14540da52381 Reviewed-on: https://cl.tvl.fyi/c/depot/+/10989 Tested-by: BuildkiteCI Reviewed-by: tazjin <tazjin@tvl.su>
2024-02-19 r/7557 feat(tvix/glue): Init fetcher builtinsAspen Smith1-3/+15
Initialize a new empty builtins module `fetcher_builtins`, which will contain the builtins which fetch URLs from the internet: * fetchurl * fetchGit * fetchTarball * fetchTree (maybe? this is experimental) These builtins are all implemented in CPP nix at: https://github.com/NixOS/nix/blob/2.20.2/src/libexpr/primops/fetchTree.cc These builtins are added to the evaluation context using a similar mechanism to the derivation builtins, and have been added everywhere derivation builtins were previously being added. Change-Id: I133b91cc9560f23028621414537f712e7bd8a825 Reviewed-on: https://cl.tvl.fyi/c/depot/+/10974 Autosubmit: aspen <root@gws.fyi> Reviewed-by: flokli <flokli@flokli.de> Tested-by: BuildkiteCI
2024-02-02 r/7467 refactor(tvix/eval): Box Value::StringAspen Smith1-4/+4
NixString is *quite* large - like 80 bytes - because of the extra capacity value for BString and because of the context. We want to keep Value small since we're passing it around a lot, so let's box the NixString inside Value::String to save on some memory, and make cloning ostensibly a little cheaper Change-Id: I343c8b4e7f61dc3dcbbaba4382efb3b3e5bbabb2 Reviewed-on: https://cl.tvl.fyi/c/depot/+/10729 Tested-by: BuildkiteCI Reviewed-by: sterni <sternenseemann@systemli.org>
2024-01-31 r/7460 fix(tvix): Represent strings as byte arraysAspen Smith1-7/+4
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
2024-01-18 r/7411 refactor(tvix/glue): add BuildService to TvixStoreIOFlorian Klink1-6/+4
TvixStoreIO triggers builds whenever IO into a not-yet-built store path is requested, if it knows how to build that path. Change-Id: If30e9db6be2f2a30cbc9d0576f357f3ecfa0d35a Reviewed-on: https://cl.tvl.fyi/c/depot/+/10645 Reviewed-by: raitobezarius <tvl@lahfa.xyz> Tested-by: BuildkiteCI
2024-01-18 r/7410 feat(tvix/glue): use TvixStoreIO as derivation builtin stateRyan Lahfa1-15/+31
We propagate a `TvixStoreIO` as the `state` of our derivation-specific builtins in the glue crate. The evaluators `io_handle` itself is using a Rc<dyn EvalIO>. An earlier version of TvixStoreIO was also introducing generics over the different internal services themselves, but we opted for instead hardcoding this to Arc<dyn …> for the sake of less macro voodoo. Change-Id: I535c476f06b840858fa3070c4a237ece47f7a15b Reviewed-on: https://cl.tvl.fyi/c/depot/+/10636 Reviewed-by: raitobezarius <tvl@lahfa.xyz> Autosubmit: raitobezarius <tvl@lahfa.xyz> Tested-by: BuildkiteCI Reviewed-by: flokli <flokli@flokli.de>
2024-01-18 r/7407 refactor(tvix/eval): generalize EvalIO containerFlorian Klink1-2/+2
Don't restrict to a Box<dyn EvalIO>. There's still one or two places where we do restrict, this will be solved by b/262. Change-Id: Ic8d927d6ea81fa12d90b1e4352f35ffaafbd1adf Reviewed-on: https://cl.tvl.fyi/c/depot/+/10639 Tested-by: BuildkiteCI Reviewed-by: raitobezarius <tvl@lahfa.xyz>
2024-01-12 r/7377 feat(tvix/glue): input derivation context testsRyan Lahfa1-0/+32
`args` was not propagating context, here's a regression test for it. Change-Id: I8b6a3148508d40df0077128f0bafe68c098a03bd Reviewed-on: https://cl.tvl.fyi/c/depot/+/10610 Tested-by: BuildkiteCI Reviewed-by: flokli <flokli@flokli.de>
2024-01-12 r/7376 feat(tvix/glue/derivationStrict): support __structuredAttrsFlorian Klink1-0/+24
This adds support to handle the __structuredAttrs argument, which can be passed to builtins.derivationStrict. If __structuredAttrs is passed, and set to true, most of the arguments passed to builtins.derivationStrict are not simply coerced to a string and passed down to "environments", but instead kept in a more structured fashion. Inside ATerm, which is what's relevant as far as path calculation is concerned, a virtual `__json` environment variable is present, containing these structured values. Inside Builds, these structured values are not made available as an environment variable, but a JSON file (and source-able bash script). This will need to be respected once we start emitting BuildRequests, and for that we can probably just parse the `__json` key in Derivation.environment again - or keep this additionally in non-serialized form around during Evaluation. No matter what, this is left for a followup CL. The existing handle_derivation_parameters and populate_outputs helper function were removed, as __structuredAttrs causes quite a change in behaviour, and so handling both in the same place makes it more readable. There's some open questions w.r.t. string contexts for structured attrs itself. A TODO is left for this, but at least path calculation for individual structured attrs derivations are correct now. Part of b/366. Change-Id: Ic293822266ced6f8c4826d8ef0d2e098a4adccaa Reviewed-on: https://cl.tvl.fyi/c/depot/+/10604 Tested-by: BuildkiteCI Reviewed-by: raitobezarius <tvl@lahfa.xyz>
2024-01-12 r/7374 docs(tvix/glue): misc reflowing of commentsRyan Lahfa1-7/+5
My OCD could not be stopped. Change-Id: I2bf504fe0865a5084ad02aee18e6180a8a3e19d7 Reviewed-on: https://cl.tvl.fyi/c/depot/+/10609 Reviewed-by: flokli <flokli@flokli.de> Tested-by: BuildkiteCI
2024-01-08 r/7357 feat(tvix/glue): add test for output path calculationFlorian Klink1-0/+36
This test serves as a minimal reproducer for output path calculation. Derivations with the same name and output hash, but different build recipe should end up with the same outPath. However derivations with different name should end up with a different outPath. Change-Id: I555be59dd87ea675a0816188ed973f96c311e4e1 Reviewed-on: https://cl.tvl.fyi/c/depot/+/10416 Autosubmit: flokli <flokli@flokli.de> Reviewed-by: tazjin <tazjin@tvl.su> Reviewed-by: sterni <sternenseemann@systemli.org> Tested-by: BuildkiteCI
2024-01-03 r/7339 feat(tvix/eval): impl `unsafeDiscardStringContext`Ryan Lahfa1-0/+45
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/7313 test(tvix/glue): add test with passAsFileFlorian Klink1-0/+1
This already succeeds, as the output path calculation path does not need to be aware of any builder-specific custom handling for passAsFile. Change-Id: I9cc9e4e4351cdeaa3ec33ba58ee1569e7a368150 Reviewed-on: https://cl.tvl.fyi/c/depot/+/10520 Reviewed-by: tazjin <tazjin@tvl.su> Autosubmit: flokli <flokli@flokli.de> Tested-by: BuildkiteCI
2024-01-03 r/7311 feat(tvix/glue): emit a warning in case of bad SRI hashesFlorian Klink1-0/+20
And include a test to ensure we show the warning. Change-Id: Ib6a436dbba2592b398b54e44f15a48d1aa345099 Reviewed-on: https://cl.tvl.fyi/c/depot/+/10470 Tested-by: BuildkiteCI Reviewed-by: raitobezarius <tvl@lahfa.xyz>
2023-12-31 r/7289 refactor(tvix/eval): remove code and location from structFlorian Klink1-2/+2
Instead, it's passed in the evaluate/compile_only functions, which feels more naturally. It lets us set up the Evaluation struct long before we actually feed it with data to evaluate. Now that Evaluation::new() would be accepting an empty list of arguments, we can simply implement Default, making things a bit more idiomatic. Change-Id: I4369658634909a0c504fdffa18242a130daa0239 Reviewed-on: https://cl.tvl.fyi/c/depot/+/10475 Tested-by: BuildkiteCI Reviewed-by: tazjin <tazjin@tvl.su> Autosubmit: flokli <flokli@flokli.de>
2023-11-04 r/6939 refactor(tvix/glue): move builtins into separate directoryFlorian Klink1-0/+157
Change-Id: I25b7197458dbfbde8623545dc0a0286eb2744f10 Reviewed-on: https://cl.tvl.fyi/c/depot/+/9911 Autosubmit: flokli <flokli@flokli.de> Tested-by: BuildkiteCI Reviewed-by: raitobezarius <tvl@lahfa.xyz>