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Default to always leaking strings, and copying strings by copying
pointers rather than cloning the underlying allocation. This (somewhat
bafflingly) doesn't seem to affect any benchmarks, but paves the way for
some tricks around string allocation that do.
Unfortunately, we can't do this (yet?) for contextful strings, for
reasons I don't currently understand but which I will address later,
when I address contextful strings more holistically.
I've left a flag in here to disable this, both to test the cloning logic
for strings for when/if we decide to bring this back, and to allow
people who care more about memory usage than perf to disable leaking.
Change-Id: Iec44bcbfe9b3d20389d2450b9a551792a79b9b26
Reviewed-on: https://cl.tvl.fyi/c/depot/+/12045
Autosubmit: aspen <root@gws.fyi>
Tested-by: BuildkiteCI
Reviewed-by: flokli <flokli@flokli.de>
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* Treewide: re-run depotfmt
* //third_party/nixpkgs:html5validator: build with Python 3.11,
dependency openstackdocstheme doesn't support 3.12
* //users/sterni/machines/ingeborg: adapt to poorly handled fcgiwrap
module API change: https://github.com/NixOS/nixpkgs/pull/318599
* //tvix/*-go: regenerate protobuf files
* //third_party/nixpkgs:treefmt: Remove patch for merged pull request
* //users/flokli/ipu6-softisp: rebase, drop upstreamed kernel patches
Change-Id: Ie4e0df007c287e8cd6207683a9a25838aa5bd39a
Reviewed-on: https://cl.tvl.fyi/c/depot/+/11971
Autosubmit: sterni <sternenseemann@systemli.org>
Reviewed-by: sterni <sternenseemann@systemli.org>
Reviewed-by: flokli <flokli@flokli.de>
Reviewed-by: aspen <root@gws.fyi>
Tested-by: BuildkiteCI
Reviewed-by: tazjin <tazjin@tvl.su>
Reviewed-by: Ilan Joselevich <personal@ilanjoselevich.com>
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Previously, OpConstant would display some detail about its
ConstantIdx: whether it's a thunk or closure, and what its address
is. This has been expanded to also show when the ConstantIdx is a
blueprint, along with the blueprint's address, and to the other
opcodes that use a ConstantIdx.
Currently, it seems like blueprint addresses don't correspond to the
address of the thunk listed in the bytecode output, but it's still
useful to see that the constant being grabbed is a blueprint, and
maybe this pointer can be made to make more sense in the future.
Change-Id: Ia212b0d52b004c87051542c093274e7106ee08e4
Reviewed-on: https://cl.tvl.fyi/c/depot/+/12044
Tested-by: BuildkiteCI
Reviewed-by: aspen <root@gws.fyi>
Autosubmit: chickadee <matthewktromp@gmail.com>
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path_exists was returning an error when certain common IO errors were
encountered. e.g. in the path "/dev/null/.", path_exists would throw
an error because the underlying call to Path::try_exists threw an
error because null isn't a directory. But if null isn't a directory,
then the path is invalid, so this should really be returning
false. That's what nix's behavior is and that's what makes sense.
The trait function isn't being changed because some other
implementers (e.g. tvix_store_io) have actual errors they can throw.
Fixes: b/411
Change-Id: I9e810e7a198bffe61365697c6d3d7e71f264c20b
Reviewed-on: https://cl.tvl.fyi/c/depot/+/12042
Tested-by: BuildkiteCI
Autosubmit: chickadee <matthewktromp@gmail.com>
Reviewed-by: aspen <root@gws.fyi>
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Now that we can bind (potentially lazy, potentially lambda-containing)
values in the REPL and then reference them in subsequent evaluations,
it's important that the values to which we construct shared references
are shared across those subsequent evaluations - otherwise, we get
panics due to unknown source map locations, or dropped weak references
to globals.
This change assigns both the globals and the source map as fields on the
Repl after the first evaluation, and then passes those in (to the
EvaluationBuilder) on subsequent evaluations.
On the EvaluationBuilder side, there's some panicking introduced - this
is intentional, as my intent is for the builder to be configured
statically enough that panicking is the best way to report errors
here (it's always a bug to misconfigure an Evaluation, and we'd never
want to handle it dynamically).
Change-Id: I37225697235c22b683ca48a17d30fa8fedd12d1b
Reviewed-on: https://cl.tvl.fyi/c/depot/+/11960
Reviewed-by: flokli <flokli@flokli.de>
Autosubmit: aspen <root@gws.fyi>
Tested-by: BuildkiteCI
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Construct the Rc<GlobalsMap> for the evaluation as part of
EvaluiationBuilder::build, rather than deferring it until we actually
compile. This changes nothing functionally, but gets us one step closer
to sharing this globals map across evaluations.
Change-Id: Id92e9fb88d974d763056d4f15ce61962ab776e84
Reviewed-on: https://cl.tvl.fyi/c/depot/+/11957
Tested-by: BuildkiteCI
Autosubmit: aspen <root@gws.fyi>
Reviewed-by: flokli <flokli@flokli.de>
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Make constructing of a new Evaluation use the builder pattern rather
than setting public mutable fields. This is currently a pure
refactor (no functionality has changed) but has a few advantages:
- We've encapsulated the internals of the fields in Evaluation, meaning
we can change them without too much breakage of clients
- We have type safety that prevents us from ever changing the fields of
an Evaluation after it's built (which matters more in a world where we
reuse Evaluations).
More importantly, this paves the road for doing different things with
the construction of an Evaluation - notably, sharing certain things like
the GlobalsMap across subsequent evaluations in eg the REPL.
Fixes: b/262
Change-Id: I4a27116faac14cdd144fc7c992d14ae095a1aca4
Reviewed-on: https://cl.tvl.fyi/c/depot/+/11956
Tested-by: BuildkiteCI
Autosubmit: aspen <root@gws.fyi>
Reviewed-by: flokli <flokli@flokli.de>
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Allow passing in a top-level env, a map from name to value, to
evaluation. The intent is to support bound identifiers in the REPL just
like upstream nix does.
Getting this working involves mucking around a bit with internals - most
notably, locals now only optionally have a Span (since locals don't have
an easy span we can use) - and getting that working requires propagating
some minor hacks to places where we currently *need* a span (and which
would require too much changing now to make spans optional; my guess is
that that would essentially end up making spans optional throughout the
codebase).
Also, some extra care has to be taken to close out the scope in the case
that we do pass in an env, to avoid breaking our assumptions about the
size of the stack when we return from the toplevel
Change-Id: Ie475b2d3dfc72ccbf298d2a3ea28c63ac877d653
Reviewed-on: https://cl.tvl.fyi/c/depot/+/11953
Tested-by: BuildkiteCI
Autosubmit: aspen <root@gws.fyi>
Reviewed-by: flokli <flokli@flokli.de>
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This was made unnecessary in c92d06271 (feat(tvix/eval): drop
LightSpan::Delayed, 2023-12-08) because it didn't improve benchmarks as
much as expected and has been vestigial since; this continues the
cleanup by just removing it altogether
Change-Id: I21ec7ae9b52a5cccd2092696a5a87f658194d672
Reviewed-on: https://cl.tvl.fyi/c/depot/+/11949
Autosubmit: aspen <root@gws.fyi>
Tested-by: BuildkiteCI
Reviewed-by: flokli <flokli@flokli.de>
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NixString::iter_plain() didn't make much sense, especially without a docstring.
Rename it to iter_ctx_plain(), and copy the docstring from NixContext.
Do the same for the two other context element types too.
Change-Id: I1bbfcb967d8d9b14487d069bfe3a1f762253ef4d
Reviewed-on: https://cl.tvl.fyi/c/depot/+/11882
Tested-by: BuildkiteCI
Reviewed-by: Ilan Joselevich <personal@ilanjoselevich.com>
Reviewed-by: flokli <flokli@flokli.de>
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Change-Id: Ieb091b32aad566719fbe8604c4a589f5ccaaf6b3
Reviewed-on: https://cl.tvl.fyi/c/depot/+/11877
Tested-by: BuildkiteCI
Reviewed-by: Connor Brewster <cbrewster@hey.com>
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There's other places where unexpected arguments can be provided, like
in builtins.
Make space for that error type.
Change-Id: Ic831497a3a1dd36a3a184bedadcf1374bf0ae6db
Reviewed-on: https://cl.tvl.fyi/c/depot/+/11876
Reviewed-by: Connor Brewster <cbrewster@hey.com>
Tested-by: BuildkiteCI
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This allows peeking of the type at a given path.
It's necessary, as an open() might not fail until you try to read()
from it, and generally, stat'ing can be faster in some cases.
Change-Id: Ib002da3194a3546ca286de49aac8d1022ec5560f
Reviewed-on: https://cl.tvl.fyi/c/depot/+/11871
Tested-by: BuildkiteCI
Reviewed-by: Ilan Joselevich <personal@ilanjoselevich.com>
Reviewed-by: Connor Brewster <cbrewster@hey.com>
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The builtins `placeholder` and `filterSource` are now implemented in
tvix-glue and so we no longer need their placeholder "implementations" in
tvix-eval.
Change-Id: Ibf161ccf1ad40103e9fbb688e9f6be58e7772af1
Reviewed-on: https://cl.tvl.fyi/c/depot/+/11867
Tested-by: BuildkiteCI
Reviewed-by: flokli <flokli@flokli.de>
Autosubmit: Ilan Joselevich <personal@ilanjoselevich.com>
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This prevents the following statements from looping endlessly:
```
builtins.split "(.*)" ""
builtins.split "([abc]*)" "abc"
builtins.split "(.*)" "abc"
builtins.split ".*" ""
```
Cover these (and some more examples) in the test suite.
Co-Authored-By: Florian Klink <flokli@flokli.de>
Change-Id: Ibd339f971e0f4e3e5c229816e2be5a8e3836fec9
Reviewed-on: https://cl.tvl.fyi/c/depot/+/11743
Autosubmit: flokli <flokli@flokli.de>
Tested-by: BuildkiteCI
Reviewed-by: tazjin <tazjin@tvl.su>
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This one's relatively simple - we just check if the store path exists,
and if it does we make a new contextful string containing the store path
as its only context element.
Automatic testing seems tricky for this (I think?) so I tested it
manually:
tvix-repl> builtins.storePath /nix/store/yn46i4xx5alh7gs6fpkxk430i34rp2q9-hello-2.12.1
=> "/nix/store/yn46i4xx5alh7gs6fpkxk430i34rp2q9-hello-2.12.1" :: string
Change-Id: I8a0d9726e4102ab872c53c2419679c2c855a5a18
Reviewed-on: https://cl.tvl.fyi/c/depot/+/11696
Tested-by: BuildkiteCI
Autosubmit: aspen <root@gws.fyi>
Reviewed-by: flokli <flokli@flokli.de>
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This fixes the following command:
'cargo test --no-default-features --features nix_tests'
Change-Id: I9883c39e1e428c72a0e7e0b75a73c8ed734abd3b
Reviewed-on: https://cl.tvl.fyi/c/depot/+/11740
Reviewed-by: flokli <flokli@flokli.de>
Tested-by: BuildkiteCI
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`cargo test --no-default-features` fails, if we don't conditionalize
this on the `arbitrary` feature too.
Change-Id: I81a277810119fed0cfc37c942c422f731aa14b2e
Reviewed-on: https://cl.tvl.fyi/c/depot/+/11726
Autosubmit: flokli <flokli@flokli.de>
Reviewed-by: tazjin <tazjin@tvl.su>
Tested-by: BuildkiteCI
Reviewed-by: Connor Brewster <cbrewster@hey.com>
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`Evaluation::new_impure()` would require the test to be impure, but
there's nothing in this test specifically requiring us to make use of
impure features.
Change-Id: Idb24981195d1a94f51053ae04403eb5f0e27f3d9
Reviewed-on: https://cl.tvl.fyi/c/depot/+/11725
Autosubmit: flokli <flokli@flokli.de>
Tested-by: BuildkiteCI
Reviewed-by: Connor Brewster <cbrewster@hey.com>
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Gate this behind the nix_tests feature flag (which wasn't applied
consistently).
Also, at least right now all of these use StdIO internally, either by
creating it on their own, or through the `eval_test` helper.
Once we have some proper classification system for tests we can probably
split this up further, but for now only run them if the impure feature
is enabled.
Change-Id: I3236cf09b3391585df99073367c4e4832c5e7898
Reviewed-on: https://cl.tvl.fyi/c/depot/+/11723
Tested-by: BuildkiteCI
Autosubmit: flokli <flokli@flokli.de>
Reviewed-by: Connor Brewster <cbrewster@hey.com>
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These VM requests are only emitted by code gated behind the impure feature.
To prevent warning from popping up when building without default
features, allow these to be unused if `impure` is not enabled.
Change-Id: Id871a5215e9a0f09aa78edecdd111369ee7ffe34
Reviewed-on: https://cl.tvl.fyi/c/depot/+/11722
Reviewed-by: Connor Brewster <cbrewster@hey.com>
Tested-by: BuildkiteCI
Autosubmit: flokli <flokli@flokli.de>
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These use StdIO, which is only available if the impure feature is
enabled.
Change-Id: I18d8e191a7eba6ba5bd59f43631973eaa796c7bb
Reviewed-on: https://cl.tvl.fyi/c/depot/+/11721
Tested-by: BuildkiteCI
Autosubmit: flokli <flokli@flokli.de>
Reviewed-by: tazjin <tazjin@tvl.su>
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These are only needed when building with the impure feature enabled.
This removes some warnings when building with --no-default-features.
Change-Id: I3139d9133d4846aeb1b1b5f3830c0d078d047292
Reviewed-on: https://cl.tvl.fyi/c/depot/+/11720
Autosubmit: flokli <flokli@flokli.de>
Tested-by: BuildkiteCI
Reviewed-by: tazjin <tazjin@tvl.su>
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cl/11712 simultaneously introduced this check and made it unnecessary,
since NixString::context should never return `Some` for empty contexts
now.
Change-Id: I41a655ff33910e8326cbb7d7526eb91bd19e9585
Reviewed-on: https://cl.tvl.fyi/c/depot/+/11713
Reviewed-by: flokli <flokli@flokli.de>
Tested-by: BuildkiteCI
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Both `Some(NixContext::new())` and `None` represent empty contexts,
but the former trips up `NixString::has_context`, and seems likely
to trip up other things.
We could hide the difference in the accessors, but we don't really
*want* the distinction to exist, since heap-allocating a null value
is pretty much always a mistake.
Change-Id: Ie84d26fb0d4b59e68354891ba13bde3bae40ab6e
Reviewed-on: https://cl.tvl.fyi/c/depot/+/11712
Tested-by: BuildkiteCI
Reviewed-by: flokli <flokli@flokli.de>
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In places where we want to extend context with that from another
NixString, use take_context() to split it off, then call .extend(),
making use of IntoIterator to avoid a bunch of clones.
Change-Id: I2460141a3ed776c64c36132b2203b6a1d710b922
Reviewed-on: https://cl.tvl.fyi/c/depot/+/11705
Tested-by: BuildkiteCI
Autosubmit: flokli <flokli@flokli.de>
Reviewed-by: edef <edef@edef.eu>
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XmlEmitter gains a NixContext field, and `write_typed_value` extends it
with all context elements present in the passed value.
Once all serialization is done, a into_context() function returns the
collected context, so we can construct a NixString with context.
Tests for this live in tvix-glue, as we use builtins.derivation, which
is not present in the tvix-eval crate.
Fixes b/398.
Change-Id: I85feaaa17b753885f8a017a54e419ec4e602af21
Reviewed-on: https://cl.tvl.fyi/c/depot/+/11704
Tested-by: BuildkiteCI
Reviewed-by: flokli <flokli@flokli.de>
Autosubmit: flokli <flokli@flokli.de>
Reviewed-by: Alyssa Ross <hi@alyssa.is>
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This is a slightly less annoying version of `join`, which does not
consume self. It's more consistent with HashSet::extend().
Change-Id: Ifd0872da36fe8e7b2aa6948674cb8e4023abe9d7
Reviewed-on: https://cl.tvl.fyi/c/depot/+/11703
Autosubmit: flokli <flokli@flokli.de>
Tested-by: BuildkiteCI
Reviewed-by: edef <edef@edef.eu>
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This is not necessarily valid UTF-8.
Change-Id: I72f3157240772eb9c558e5699b4785e44d256fd4
Reviewed-on: https://cl.tvl.fyi/c/depot/+/11702
Autosubmit: flokli <flokli@flokli.de>
Reviewed-by: sterni <sternenseemann@systemli.org>
Tested-by: BuildkiteCI
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In order to be compatible with the nix XML generator, it’s easier to
generate the XML directly, instead of going through a library which we
have to bend to do what we need.
Removes dependency on `xml-rs`, which came with a full XML parser that
we didn’t use. Only takes a tiny bit of code for the XML escaping,
somewhat simplified.
I add a little escaping value, to make sure we have the same behaviour
as nix proper.
Interestingly enough, we never need to escape XML attribute names,
because the `builtins.toXML` format encodes user-defined values as
attribute keys only. So we only escape attribute values.
Fixes: https://b.tvl.fyi/issues/399
Change-Id: If4d407d324864b3bb9aa3160e2ec6889f7727127
Reviewed-on: https://cl.tvl.fyi/c/depot/+/11697
Tested-by: BuildkiteCI
Reviewed-by: flokli <flokli@flokli.de>
Autosubmit: Profpatsch <mail@profpatsch.de>
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Have this return the same values as builtins.unsafeGetAttrsPos, rather
than returning a CatchableErrorKind, which crashes the CLI if it bubbles
up.
The environment we're in doesn't allow emitting a warning, as we don't
have `co` in scope, but that's probably OK as a stopgap solution.
Alternative to cl/11665.
Change-Id: I5b2c2530842547c93b6533ed9601ee9b2923b1bf
Reviewed-on: https://cl.tvl.fyi/c/depot/+/11685
Autosubmit: flokli <flokli@flokli.de>
Tested-by: BuildkiteCI
Reviewed-by: tazjin <tazjin@tvl.su>
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- //tvix: address new clippy lints
- //users/tazjin: Satisfy gonic module's new need for a playlist folder.
- //users/aspen/games: adjust for changed location of df's default
init.txt and d_init.txt.
Change-Id: I00a2adb506ae866206fb6f88c39c9a6af320380f
Reviewed-on: https://cl.tvl.fyi/c/depot/+/11509
Reviewed-by: tazjin <tazjin@tvl.su>
Autosubmit: sterni <sternenseemann@systemli.org>
Tested-by: BuildkiteCI
Reviewed-by: aspen <root@gws.fyi>
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This caught me by accident in an earlier revision of cl/11500 -
I had a `NixString`, wanted to return it as a `String`, so I was naively
calling `s.into()`.
That unfortunately gave me the `Display` implementation of `NixString`,
which quotes strings, causing an annoying error further up the stack.
NixStrings are bytes, we can keep the impl From<NixString> for BString,
but having a `.into()` suddenly do quoting is more than unexpected.
Change-Id: I5434ba94bfe6c493d0a57e68225ecc22daa4b948
Reviewed-on: https://cl.tvl.fyi/c/depot/+/11505
Autosubmit: flokli <flokli@flokli.de>
Reviewed-by: tazjin <tazjin@tvl.su>
Reviewed-by: raitobezarius <tvl@lahfa.xyz>
Tested-by: BuildkiteCI
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It was returning `{ line, col, file }` instead of `{ line, column, file
}`.
Note this is not a regression in Nix, Nix always had `column` since
2013.
Change-Id: I4871a201b32324dff0432526d0449806a535828f
Signed-off-by: Ryan Lahfa <tvl@lahfa.xyz>
Reviewed-on: https://cl.tvl.fyi/c/depot/+/11409
Reviewed-by: flokli <flokli@flokli.de>
Tested-by: BuildkiteCI
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`toJSON` transform a Nix structure into a JSON string.
For each context in that Nix structure, the JSON string must possess it.
Thus, it is necessary to take the union of all contexts and attach it to
the final structure.
Unfortunately, the return type of `into_json` is a serde's JSON object,
not a string. Therefore, it is not possible to reuse `NixString`
machinery.
Context tests are reinforced as Nix does not test those behaviors.
Fixes b/393.
Change-Id: I5afdbc4e18dd70469192c1aa657d1049ba330149
Signed-off-by: Ryan Lahfa <tvl@lahfa.xyz>
Reviewed-on: https://cl.tvl.fyi/c/depot/+/11266
Reviewed-by: flokli <flokli@flokli.de>
Tested-by: BuildkiteCI
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Right now `builtins.hashFile` always reads the entire file into memory
before hashing, which is not ideal for large files. This replaces
`read_to_string` with `open_file` which allows calculating the hash of
the file without buffering it entirely into memory. Other callers can
continue to buffer into memory if they choose, but they still use the
`open_file` VM request and then call `read_to_string` or `read_to_end`
on the `std::io::Reader`.
Fixes b/380
Change-Id: Ifa1c8324bcee8f751604b0b449feab875c632fda
Reviewed-on: https://cl.tvl.fyi/c/depot/+/11236
Reviewed-by: flokli <flokli@flokli.de>
Tested-by: BuildkiteCI
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`appendContext s ctx` will just append a user-crafted context attrs to `s`.
The most important part of this builtin is to perform all the relevant invariant validations
to avoid letting the user craft invalid contexts which can never be built, e.g. invalid store paths,
inexistent derivations, etc.
This version is incomplete and full of TODOs, but passes all the Nix's
context strings tests, so we turn them on.
Change-Id: I625dc5e7c4f5b784f078b390f04b0ee5a8d65a7c
Signed-off-by: Ryan Lahfa <tvl@lahfa.xyz>
Reviewed-on: https://cl.tvl.fyi/c/depot/+/11263
Reviewed-by: flokli <flokli@flokli.de>
Tested-by: BuildkiteCI
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This builtin only transforms any `NixContextElement::Derivation` into the trivial `NixContextElement::Plain`.
This is a forgetful functor on derivation-deep context strings.
The test coverage of this change is done in cl/11264.
Change-Id: Icd00778c97766be6db8a6bdabaa59e9724353ec5
Signed-off-by: Ryan Lahfa <tvl@lahfa.xyz>
Reviewed-on: https://cl.tvl.fyi/c/depot/+/11262
Tested-by: BuildkiteCI
Reviewed-by: flokli <flokli@flokli.de>
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Nixpkgs make use of it and this is a 2.3 builtin that was missed.
Change-Id: If36d748eed4a5f777344556c0802392c76c8d53c
Signed-off-by: Ryan Lahfa <tvl@lahfa.xyz>
Reviewed-on: https://cl.tvl.fyi/c/depot/+/11260
Tested-by: BuildkiteCI
Reviewed-by: flokli <flokli@flokli.de>
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The accompanying test case shows that we need to bubble up the catchable
error from the equality check if one is created.
Change-Id: Ic9929a57aa7653c8aa5a72d1711cf3264798c731
Reviewed-on: https://cl.tvl.fyi/c/depot/+/11159
Tested-by: BuildkiteCI
Autosubmit: sterni <sternenseemann@systemli.org>
Reviewed-by: tazjin <tazjin@tvl.su>
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It is pretty pointless to force the function argument if we are going to
use a suspended call later since forcing the function may fail in ways
that are not covered by Catchables (non-recoverable errors, infinite
recursions). From this, it kind of seems as if using #[catch] is never
correct and should be replaced by #[lazy]. Also we should probably try
to come up with more test cases for stuff where laziness gets us out of
the jam as an equivalent to the catchable tests for nonrecoverable
errors.
Fixes b/386.
Change-Id: Ia926df4ac1b440ec430403ab7b40924a0c97221b
Reviewed-on: https://cl.tvl.fyi/c/depot/+/11153
Reviewed-by: tazjin <tazjin@tvl.su>
Tested-by: BuildkiteCI
Autosubmit: sterni <sternenseemann@systemli.org>
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Change-Id: Ia1058a5ea687f413fbb62365da199032bdbd3fd2
Reviewed-on: https://cl.tvl.fyi/c/depot/+/11155
Reviewed-by: tazjin <tazjin@tvl.su>
Reviewed-by: flokli <flokli@flokli.de>
Tested-by: BuildkiteCI
Autosubmit: sterni <sternenseemann@systemli.org>
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Change-Id: Ife599387d0472cd746b992bd6755a2fb6a0e0dc4
Reviewed-on: https://cl.tvl.fyi/c/depot/+/11158
Autosubmit: flokli <flokli@flokli.de>
Reviewed-by: Connor Brewster <cbrewster@hey.com>
Tested-by: BuildkiteCI
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When we added the Nix language test suite in cl/6126, we excluded the
whole tvix tests folder from Nix formatting. This is unintentional, as
we probably want *our* tests to be formatted correctly.
Change-Id: I2b66d79e30fae17e75d5a1f8c44e279886091c5f
Reviewed-on: https://cl.tvl.fyi/c/depot/+/11154
Autosubmit: tazjin <tazjin@tvl.su>
Reviewed-by: flokli <flokli@flokli.de>
Tested-by: BuildkiteCI
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The primary addition is the `builtin_hashFile` function which attempts
value-path coercion and on success reads the file to a nix_string.
Similar to the `builtins_hashString` implementation, the hash is then
derived using the `hash_nix_string` function in the introduced hash
module which has extracted hashing functionality initially specified in
cl/11005.
Change-Id: I5e3ef0317223af99488ebb79efc2fb49b4cbc1b6
Reviewed-on: https://cl.tvl.fyi/c/depot/+/11007
Tested-by: BuildkiteCI
Reviewed-by: flokli <flokli@flokli.de>
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Implements md5, sha1, sha256 and sha512 using the related crates from
the RustCrypto hashes project (https://github.com/RustCrypto/hashes)
Change-Id: I00730dea44ec9ef85309edc27addab0ae88814b8
Reviewed-on: https://cl.tvl.fyi/c/depot/+/11005
Tested-by: BuildkiteCI
Reviewed-by: aspen <root@gws.fyi>
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Previously, Nix strings were represented as a Box (within Value)
pointing to a tuple of an optional context, and another Box pointing to
the actual string allocation itself. This is pretty inefficient, both in
terms of memory usage (we use 48 whole bytes for a None context!) and in
terms of the extra indirection required to get at the actual data. It
was necessary, however, because with native Rust DSTs if we had
something like `struct NixString(Option<NixContext>, BStr)` we could
only pass around *fat* pointers to that value (with the length in the
pointer) and that'd make Value need to be bigger (which is a waste of
both memory and cache space, since that memory would be unused for all
other Values).
Instead, this commit implements *manual* allocation of a packed string
representation, with the length *in the allocation* as a field past the
context. This requires a big old pile of unsafe Rust, but the payoff is
clear:
hello outpath time: [882.18 ms 897.16 ms 911.23 ms]
change: [-15.143% -13.819% -12.500%] (p = 0.00 < 0.05)
Performance has improved.
Fortunately this change can be localized entirely within
value/string.rs, since we were abstracting things out nicely.
Change-Id: Ibf56dd16c9c503884f64facbb7f0ac596463efb6
Reviewed-on: https://cl.tvl.fyi/c/depot/+/10852
Tested-by: BuildkiteCI
Reviewed-by: raitobezarius <tvl@lahfa.xyz>
Autosubmit: aspen <root@gws.fyi>
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With our values using bstr now, we're not restricted to only reading
files that contain valid UTF-8.
Update our `read_to_string` function to `read_to_end`
(named like `std::io::Read::read_to_end`), and have it return a Vec<u8>.
Change-Id: I87f0291dc855a132689576559c891d66c30ddf2b
Reviewed-on: https://cl.tvl.fyi/c/depot/+/11003
Tested-by: BuildkiteCI
Autosubmit: flokli <flokli@flokli.de>
Reviewed-by: Pádraic Ó Mhuiris <patrick.morris.310@gmail.com>
Reviewed-by: flokli <flokli@flokli.de>
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One last place where we needed to wrap the forcing of the element of a
list in `try_value!`. This fixes a previously `notyetpassing` test
Change-Id: I8827a3e39630e6959013b70bdfa9cbcb93f4e91c
Reviewed-on: https://cl.tvl.fyi/c/depot/+/10789
Autosubmit: aspen <root@gws.fyi>
Reviewed-by: sterni <sternenseemann@systemli.org>
Tested-by: BuildkiteCI
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(Re-)Adds an error variant that wraps a catchable error kind, which is
used for returning the result of an evaluation.
Previously this would return the internal catchable value, which would
lead to panics if users tried to use these. Somehow this was missed; I
think we need error output tests.
Change-Id: Id6e24aa2ce4ea4358a29b2e1cf4a6749986baf8c
Reviewed-on: https://cl.tvl.fyi/c/depot/+/10991
Tested-by: BuildkiteCI
Autosubmit: tazjin <tazjin@tvl.su>
Reviewed-by: flokli <flokli@flokli.de>
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