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2023-08-20 r/6494 feat(tvix/nix-compat): don't swallow hash validation errorsRyan Lahfa1-1/+111
Previously, Output deserialization would silence validation errors and provide `None` for `hash_with_mode` as soon as a validation error would happen inside of the `NixHashWithMode` deserialization, e.g. invalid hash length would not provide an validation error but a silent `None` value. This is problematic, we workaround a serde limitation here by writing our own Deserializer. As you can see, we write some boilerplate code unfortunately, as, for example: - `#[serde(fail_if_unparsed_as="Option::is_none")]` is not a thing, otherwise, we could have been able to just bubble up errors in case of "not fully parsed" (and not missing) values. - `From<&serde_json::Value> for serde::de::Unexpected` is not a thing, otherwise, we could just map invalid type errors and reuse the existing types instead of doing extremely bizarre things with `serde::de::Unexpected::Other`, note: this is a not problem for expected, we know what we expect, we don't know what we received in practice. I decided to write a `NixHashWithMode::from_map` which will eat a map deserialized via `serde_json`, so our serde magic is not totally "data model" agnostic. I wanted to go for data model agnosticity and enable maximal performance, e.g. building the structure as the map values are streamed in the Visitor, this is needlessly painful because `Output` and `NixHashWithMode` are in different files and this really makes sense only if we write the full implementation in one file, indeed, otherwise, you end up duplicating the work or having strange coupling. So, for now, we will allocate a full map of the fields inside the `Output`, i.e. if any "unknown field" is in that map, we will deserialize it for no reason. Doing it properly, as I repeat it in the code and to flokli at C3Camp 2023, requires to patch serde upstream IMHO. Change-Id: I46fe6ccb8c390c48d6934fd3e3f02a0dfe59557b Reviewed-on: https://cl.tvl.fyi/c/depot/+/9107 Tested-by: BuildkiteCI Reviewed-by: flokli <flokli@flokli.de>
2023-08-19 r/6491 refactor(tvix/nix-compat/derivation): cargo clippyFlorian Klink1-3/+2
This `.into_iter()` call is equivalent to `.iter()` and will not consume the `BTreeMap`. Change-Id: Ie26637ebecb0bea5b09c447cc45ed207f8b50913 Reviewed-on: https://cl.tvl.fyi/c/depot/+/9088 Autosubmit: flokli <flokli@flokli.de> Reviewed-by: raitobezarius <tvl@lahfa.xyz> Tested-by: BuildkiteCI
2023-08-19 r/6487 refactor(tvix/nix-compat/derivation/escape): move to Vec<u8>Florian Klink2-7/+7
We only need bstr::ByteSlice to be able to use replace, it doesn't need to return a BString. Change-Id: I811948436fb89652e880970c2c05356183f3e439 Reviewed-on: https://cl.tvl.fyi/c/depot/+/9084 Tested-by: BuildkiteCI Autosubmit: flokli <flokli@flokli.de> Reviewed-by: raitobezarius <tvl@lahfa.xyz>
2023-07-31 r/6458 refactor(tvix/nix-compat/derivation/tests): fix typoFlorian Klink1-1/+1
Change-Id: I764232378f79f16c781870d467469db91a2f14d2 Reviewed-on: https://cl.tvl.fyi/c/depot/+/9001 Autosubmit: flokli <flokli@flokli.de> Reviewed-by: raitobezarius <tvl@lahfa.xyz> Tested-by: BuildkiteCI
2023-07-31 r/6457 refactor(tvix/nix-compat): use local write::*;Florian Klink1-15/+17
Change-Id: I43cc1d5b3419255f815490b2e10f05db19e3bffc Reviewed-on: https://cl.tvl.fyi/c/depot/+/9000 Autosubmit: flokli <flokli@flokli.de> Tested-by: BuildkiteCI Reviewed-by: raitobezarius <tvl@lahfa.xyz>
2023-07-31 r/6456 refactor(tvix/nix-compat/test): rename `data` identifierFlorian Klink1-23/+26
Make it more obvious if these are bytes pointing to JSON or ATerm, so we don't get confused. Change-Id: I2402c687b7ba9c05aac20ed63b0df54e4e96a9d8 Reviewed-on: https://cl.tvl.fyi/c/depot/+/8998 Tested-by: BuildkiteCI Autosubmit: flokli <flokli@flokli.de> Reviewed-by: raitobezarius <tvl@lahfa.xyz>
2023-07-31 r/6455 refactor(tvix/nix-compat/derivation): drop some useless allocationsFlorian Klink1-6/+3
Change-Id: I85e44e24e9ec3fe4284f02623a1ac7ca9935e554 Reviewed-on: https://cl.tvl.fyi/c/depot/+/8999 Autosubmit: flokli <flokli@flokli.de> Tested-by: BuildkiteCI Reviewed-by: raitobezarius <tvl@lahfa.xyz>
2023-07-31 r/6454 refactor(tvix/nix-compat/derivation): use writer.write_allFlorian Klink2-8/+10
This is more concise than a io::copy of a Cursor to bytes, and we have everything to be written in memory. Change-Id: I81f34666aa61aef4e16b33423ce4a69c3781efc3 Reviewed-on: https://cl.tvl.fyi/c/depot/+/8997 Autosubmit: flokli <flokli@flokli.de> Reviewed-by: raitobezarius <tvl@lahfa.xyz> Tested-by: BuildkiteCI
2023-07-31 r/6452 refactor(tvix/derivation): move comma writing business upFlorian Klink2-8/+13
write_input_derivations shouldn't need to write a comma to separate it from the previous output from write_outputs. This is better placed in the function calling all of these helper functions. Change-Id: I9ccc440e4665b52369ef39e75151b9a29469ce48 Reviewed-on: https://cl.tvl.fyi/c/depot/+/8995 Reviewed-by: raitobezarius <tvl@lahfa.xyz> Autosubmit: flokli <flokli@flokli.de> Tested-by: BuildkiteCI
2023-07-31 r/6451 refactor(tvix/nix-compat/derivation): generic write_array_elementsFlorian Klink1-14/+14
We're happy with any &[S], as long as <S: AsRef<[u8]>. This allows passing both strings and &[u8]. Change-Id: If2a80d9b1ee33ba328c9cdab4fa83ca7b98a71e2 Reviewed-on: https://cl.tvl.fyi/c/depot/+/8994 Autosubmit: flokli <flokli@flokli.de> Reviewed-by: raitobezarius <tvl@lahfa.xyz> Tested-by: BuildkiteCI
2023-07-31 r/6450 refactor(tvix/nix-compat/derivation): simplifyFlorian Klink3-64/+51
Let the escape function only take care of string escaping, not quoting. Let write_array_elements always quote and escape strings it consumes. Move the business of writing additional wrapping characters around it to the caller. Change-Id: Ib8dea69c409561b49862c531ba5a3fe6c2f061f8 Reviewed-on: https://cl.tvl.fyi/c/depot/+/8993 Reviewed-by: raitobezarius <tvl@lahfa.xyz> Autosubmit: flokli <flokli@flokli.de> Tested-by: BuildkiteCI
2023-07-31 r/6449 refactor(tvix/nix-compat): support non-unicode DerivationsFlorian Klink9-120/+307
Derivations can have non-unicode strings in their env values, so the ATerm representations are not necessarily String anymore, but Vec<u8>. Change-Id: Ic23839471eb7f68d9c3c30667c878830946b6607 Reviewed-on: https://cl.tvl.fyi/c/depot/+/8990 Tested-by: BuildkiteCI Reviewed-by: raitobezarius <tvl@lahfa.xyz> Autosubmit: flokli <flokli@flokli.de>
2023-07-21 r/6433 feat(tvix/nix-compat): have StorePath accept bytesFlorian Klink3-9/+10
The primary constructor for this is now from_bytes, from_string is simply calling .as_bytes() on the string, passing it along. The InvalidName error now contains a Vec<u8>, to encode the invalid name (which might not be a string anymore). from_absolute_path now accepts a &[u8] (even though we might want to make this a OSString of some sort). StorePath::validate_name has been degraded to a pub(crate) function. It's still used in src/derivation, even though it probably shouldn't at all - that cleanup is left for cl/8412 though. Change-Id: I6b4e62a6fa5c4bec13b535279e73444f0b83ad35 Reviewed-on: https://cl.tvl.fyi/c/depot/+/8973 Autosubmit: flokli <flokli@flokli.de> Tested-by: BuildkiteCI Reviewed-by: raitobezarius <tvl@lahfa.xyz>
2023-07-21 r/6432 feat(tvix/nix-compat): fold NameError into ErrorFlorian Klink1-1/+1
This being a nested error makes things more complicated than necessary. Also, this caused BuildStorePathError to only hold NameError, so refactor these utility functions to either return Error, or BuildStorePathError. Change-Id: I046fb403780cc5135df8b8833a291fc2a90fd913 Reviewed-on: https://cl.tvl.fyi/c/depot/+/8972 Tested-by: BuildkiteCI Autosubmit: flokli <flokli@flokli.de> Reviewed-by: tazjin <tazjin@tvl.su>
2023-05-18 r/6161 refactor(tvix/nix-compat): clippyFlorian Klink1-8/+6
Change-Id: Ie5277a5c15d9dfe543ca41fa7c6a1eedf22a9f64 Reviewed-on: https://cl.tvl.fyi/c/depot/+/8593 Reviewed-by: tazjin <tazjin@tvl.su> Tested-by: BuildkiteCI
2023-04-09 r/6088 refactor(nix-compat): Properly encapsulate store path constructionJohn Ericson3-57/+39
Before there was code scattered about (e.g. text hashing module and derivation output computation) constructing store paths from low level building blocks --- there was some duplication and it was easy to make nonsense store paths. Now, we have roughly the same "safe-ish" ways of constructing them as C++ Nix, and only those are exposed: - Make text hashed content-addressed store paths - Make other content-addressed store paths - Make input-addressed fixed output hashes Change-Id: I122a3ee0802b4f45ae386306b95b698991be89c8 Reviewed-on: https://cl.tvl.fyi/c/depot/+/8411 Reviewed-by: flokli <flokli@flokli.de> Tested-by: BuildkiteCI
2023-03-30 r/6060 refactor(tvix/nix-compat): move build_store_path out of derivationFlorian Klink4-111/+20
This doesn't have anything to do with ATerms, we just happen to be using the aterm representation of a Derivation as contents. Moving this into store_path/utils.rs makes these things much cleaner - Have a build_store_path_from_references function, and a build_store_path_from_fingerprint helper function that makes use of it. build_store_path_from_references is invoked from the derivation module which can be used to calculate the derivation path. In the derivation module, we also invoke build_store_path_from_fingerprint during the output path calculation. Change-Id: Ia8d61a5e8e5d3f396f93593676ed3f5d1a3f1d66 Reviewed-on: https://cl.tvl.fyi/c/depot/+/8367 Autosubmit: flokli <flokli@flokli.de> Reviewed-by: tazjin <tazjin@tvl.su> Tested-by: BuildkiteCI
2023-03-30 r/6059 refactor(tvix/nix-compat): use Sha256::new_with_prefixFlorian Klink1-2/+1
Change-Id: I328983008c0680e0448ccff604dbdae312f7988b Reviewed-on: https://cl.tvl.fyi/c/depot/+/8366 Autosubmit: flokli <flokli@flokli.de> Tested-by: BuildkiteCI Reviewed-by: tazjin <tazjin@tvl.su>
2023-03-30 r/6058 refactor(tvix/nix-compat): drop is_derivation in build_store_pathFlorian Klink2-12/+7
This only added a suffix to the input argument, if build_store_path was building the path of a Derivation. As we need to also add the `.drv` suffix to the name we pass into text_hash_string inside calculate_derivation_path, we can simply add the suffix there and drop the parameter from build_store_path. Change-Id: Icd5343dd1458f112b9296b389e81ce2ebdd16a9f Reviewed-on: https://cl.tvl.fyi/c/depot/+/8365 Autosubmit: flokli <flokli@flokli.de> Reviewed-by: tazjin <tazjin@tvl.su> Tested-by: BuildkiteCI
2023-03-30 r/6057 refactor(tvix/nix-compat): add text_hash_string functionFlorian Klink2-60/+15
Use it to calculate the text_hash_string, which is then used in the calculate_derivation_path and path_with_references functions. Relates to b/263. Change-Id: I7478825e2a23a11224212fea5e3fd06daa97d5e5 Reviewed-on: https://cl.tvl.fyi/c/depot/+/8364 Autosubmit: flokli <flokli@flokli.de> Reviewed-by: tazjin <tazjin@tvl.su> Tested-by: BuildkiteCI
2023-03-15 r/6012 refactor(tvix/nix-compat): remove get_fixed_output() funcFlorian Klink1-66/+52
The behaviour of this function is a bit unintuitive, and cl/8310 already inlined the other consumer of it. Rewrite the last consumer of the function, so we can drop it. Change-Id: I59c8486037ce3f777667d1d9e4f4a9316d5a0cb9 Reviewed-on: https://cl.tvl.fyi/c/depot/+/8311 Tested-by: BuildkiteCI Reviewed-by: tazjin <tazjin@tvl.su>
2023-03-15 r/6011 refactor(tvix/nix-compat): simplify fingerprint calculationFlorian Klink1-76/+54
Instead of having two very similar match branches for the FOD and non- FOD case, detect the FOD case while looping over all outputs. In the case of anything other than recursive sha256 FODs, the fingerprint and output path calculation is exactly the same. Change-Id: Ieb6995653d008766e595cf29d7cd4fb1334e33dd Reviewed-on: https://cl.tvl.fyi/c/depot/+/8310 Tested-by: BuildkiteCI Reviewed-by: tazjin <tazjin@tvl.su> Autosubmit: flokli <flokli@flokli.de>
2023-03-15 r/6009 refactor(tvix/nix-compat): -derivation::Hash, +NixHashFlorian Klink4-75/+75
This stops using our own custom Hash structure, which was mostly only used because we had to parse the JSON representation somehow. Since cl/8217, there's a `NixHash` struct, which is better suited to hold this data. Converting the format requires a bit of serde labor though, but that only really matters when interacting with JSON representations (which we mostly don't). Change-Id: Idc5ee511e36e6726c71f66face8300a441b0bf4c Reviewed-on: https://cl.tvl.fyi/c/depot/+/8304 Autosubmit: flokli <flokli@flokli.de> Tested-by: BuildkiteCI Reviewed-by: tazjin <tazjin@tvl.su>
2023-03-14 r/6000 refactor(tvix/nix-compat): rename helper funcFlorian Klink1-3/+3
This only trims the output paths from a Derivation struct, not the output hashes. Change-Id: I9250fec4602ed05bb64540c4a89ddb6fb052be1f Reviewed-on: https://cl.tvl.fyi/c/depot/+/8303 Tested-by: BuildkiteCI Reviewed-by: tazjin <tazjin@tvl.su> Autosubmit: flokli <flokli@flokli.de>
2023-03-14 r/5999 refactor(tvix/nix-compat): remove manual mapFlorian Klink1-8/+6
Change-Id: I1652e24c9be28112d98683de2d2db51dc46001ed Reviewed-on: https://cl.tvl.fyi/c/depot/+/8302 Reviewed-by: tazjin <tazjin@tvl.su> Autosubmit: flokli <flokli@flokli.de> Tested-by: BuildkiteCI
2023-03-14 r/5998 refactor(tvix/nix-compat): rename test nameFlorian Klink1-1/+1
Change-Id: Ia6af8d4b53fbd4d9ea26f0094cd98dde66a91f78 Reviewed-on: https://cl.tvl.fyi/c/depot/+/8301 Autosubmit: flokli <flokli@flokli.de> Reviewed-by: tazjin <tazjin@tvl.su> Tested-by: BuildkiteCI
2023-03-14 r/5997 fix(tvix/store/derivation): fix commentFlorian Klink1-1/+1
The digest is encoded in LOWERHEX here, not nixbase32. Change-Id: I8e14742f0135966424073bfdb93ada8cd7bd52e2 Reviewed-on: https://cl.tvl.fyi/c/depot/+/8300 Tested-by: BuildkiteCI Autosubmit: flokli <flokli@flokli.de> Reviewed-by: tazjin <tazjin@tvl.su>
2023-03-14 r/5995 refactor(tvix/nix-compat): replace calculate_drv_replacement_strFlorian Klink2-51/+68
Call this function derivation_or_fod_hash, and return a NixHash. This is more in line with how cppnix calls this, and allows using to_nix_hash_string() in some places. Change-Id: Iebf5355f08ed5c9a044844739350f829f874f0ce Reviewed-on: https://cl.tvl.fyi/c/depot/+/8293 Reviewed-by: tazjin <tazjin@tvl.su> Tested-by: BuildkiteCI
2023-03-04 r/5882 feat(tvix/nix-compat/derivation): make use of NixPath in some placesFlorian Klink2-6/+14
Some of these strings are actually just the nix hash representation of the hash calculated earlier. There's another one passed around via calculate_drv_replacement_str, but that's left for a followup. Change-Id: Id99a2a926a980d679eb49c34ee6a36bf224699b0 Reviewed-on: https://cl.tvl.fyi/c/depot/+/8218 Tested-by: BuildkiteCI Reviewed-by: tazjin <tazjin@tvl.su> Autosubmit: flokli <flokli@flokli.de>
2023-03-04 r/5877 refactor(tvix/nix-compat): address clippy in derivation/tests/mod.rsFlorian Klink1-2/+2
Change-Id: I3f3f7cb590c900abf8b39533ed73fe9135d58f0b Reviewed-on: https://cl.tvl.fyi/c/depot/+/8220 Reviewed-by: tazjin <tazjin@tvl.su> Tested-by: BuildkiteCI Autosubmit: flokli <flokli@flokli.de>
2023-02-01 r/5809 feat(tvix/nix-compat/derivation): Display -> to_aterm_string()Florian Klink2-11/+19
Instead of implementing `std::fmt::Display for Derivation` and relying on the `to_string` method, introduce a `to_aterm_string()` method, which does the same thing, but makes it clearer what we're producing, rather than just calling `to_string()``. Change-Id: I21823de9096a0f2c2eb6f4591e48c1aa9fd94161 Reviewed-on: https://cl.tvl.fyi/c/depot/+/7998 Autosubmit: flokli <flokli@flokli.de> Reviewed-by: tazjin <tazjin@tvl.su> Tested-by: BuildkiteCI
2023-02-01 r/5805 refactor(tvix/nix-compat/derivation): remove module inceptionFlorian Klink3-350/+356
The module `src/derivation/derivation.rs` is a sign of module inception. Move the Derivation struct definiton up into `src/derivation/mod.rs`, and some of the helpers in a `util.rs`. Change-Id: Ib24a5f8a27bdd45df8b1fa2b3482a79b33cab8d5 Reviewed-on: https://cl.tvl.fyi/c/depot/+/7997 Reviewed-by: tazjin <tazjin@tvl.su> Tested-by: BuildkiteCI Autosubmit: flokli <flokli@flokli.de>
2023-02-01 r/5803 refactor(tvix/derivation): don't create deref'd immediately refFlorian Klink2-3/+3
clippy says: > This expression creates a reference which is immediately dereferenced > by the compiler Change-Id: Ic2c093b043ebee9ae80912075083107e4d216cf1 Reviewed-on: https://cl.tvl.fyi/c/depot/+/7995 Tested-by: BuildkiteCI Autosubmit: flokli <flokli@flokli.de> Reviewed-by: tazjin <tazjin@tvl.su>
2023-01-31 r/5792 docs(tvix/nix-compat/derivation): fix docstringsFlorian Klink2-2/+5
Change-Id: I3fd02e62c8a24fa7f27461b17cdd824b060d9bdb Reviewed-on: https://cl.tvl.fyi/c/depot/+/7968 Tested-by: BuildkiteCI Reviewed-by: tazjin <tazjin@tvl.su> Autosubmit: flokli <flokli@flokli.de>
2023-01-31 r/5791 refactor(tvix/nix-compat): absorb //tvix/derivationFlorian Klink24-0/+1321
Put this in its src/derivation. Change-Id: Ic047ab1c2da555a833ee454e10ef60c77537b617 Reviewed-on: https://cl.tvl.fyi/c/depot/+/7967 Reviewed-by: tazjin <tazjin@tvl.su> Tested-by: BuildkiteCI Autosubmit: flokli <flokli@flokli.de>