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Thanks to lexi for finding this
Change-Id: Ic248af55426630b5e07183e4eac1596d52954478
Reviewed-on: https://cl.tvl.fyi/c/depot/+/12696
Tested-by: BuildkiteCI
Autosubmit: yuka <yuka@yuka.dev>
Reviewed-by: tazjin <tazjin@tvl.su>
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Change-Id: If92ddaf3b469c4635c234b193f8d7716e11887f6
Reviewed-on: https://cl.tvl.fyi/c/depot/+/12630
Tested-by: BuildkiteCI
Reviewed-by: Ilan Joselevich <personal@ilanjoselevich.com>
Autosubmit: flokli <flokli@flokli.de>
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Equivalent logic is now in the standard library, and this dependency is no
longer needed for eval.
Change-Id: Iaa4410d89fdaa5b84cbd9e6bc6ae479c659d92f2
Reviewed-on: https://cl.tvl.fyi/c/depot/+/12602
Autosubmit: tazjin <tazjin@tvl.su>
Reviewed-by: edef <edef@edef.eu>
Tested-by: BuildkiteCI
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Refactor the `strict` boolean passed into evaluation at the top-level to
be a (two-variant, so far) EvalMode enum of Lazy and Strict.
This is more explicit than a boolean, and if we ever add more EvalModes
it's a simple extension of the enum.
Change-Id: I3de50e74ec971011664f6cd0999d08b792118410
Reviewed-on: https://cl.tvl.fyi/c/depot/+/12186
Tested-by: BuildkiteCI
Reviewed-by: flokli <flokli@flokli.de>
Autosubmit: aspen <root@gws.fyi>
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thiserror is much more easier to maintain than manually implementing Error and Display.
Change-Id: Ibf13e2d8a96fba69c8acb362b7515274a593dfd6
Reviewed-on: https://cl.tvl.fyi/c/depot/+/12452
Reviewed-by: flokli <flokli@flokli.de>
Autosubmit: Ilan Joselevich <personal@ilanjoselevich.com>
Tested-by: BuildkiteCI
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Included changes:
* users/aspen: explicitly use open-source nvidia driver
This now has to be specified explicitly, otherwise evaluation fails with an
error.
* users/aspen: nixfmt -> nixfmt-classic
* users/aspen: fixes for renamed packages & options
* users/tazjin: fixes for renamed packages & options
* 3p/overlays: remove cbtemulator patch (merged upstream)
* tvix/shell: remove unnecessary patches (merged upstream)
* 3p/rust-crates: mark libgit2_sys as broken
* users/Profpatsch: mark git-db as broken
* 3p/overlays: pick `mypaint` from stable channel
* tvix: fix comments that clippy doesn't like anymore
* tvix/glue: disable a misfiring clippy lint (applying its suggestion breaks
code below)
Change-Id: I6d3fc027694bbe7425a2d25dc53d65467a44f3b0
Reviewed-on: https://cl.tvl.fyi/c/depot/+/12403
Tested-by: BuildkiteCI
Reviewed-by: aspen <root@gws.fyi>
Reviewed-by: Profpatsch <mail@profpatsch.de>
Autosubmit: tazjin <tazjin@tvl.su>
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This interface is the only way to construct lazy builtins outside of eval, which
is actually a useful feature to have.
Change-Id: I386323af20aa3134bb4f669fa66fbb21e9b05fd4
Reviewed-on: https://cl.tvl.fyi/c/depot/+/12386
Reviewed-by: flokli <flokli@flokli.de>
Tested-by: BuildkiteCI
Autosubmit: tazjin <tazjin@tvl.su>
Reviewed-by: Yury Shvedov <yury.shvedov@kaspersky.com>
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There's no need to duplicate this.
Change-Id: If3d930211a1d625d6c7ef129b05034e7a915da83
Reviewed-on: https://cl.tvl.fyi/c/depot/+/12385
Reviewed-by: flokli <flokli@flokli.de>
Tested-by: BuildkiteCI
Autosubmit: tazjin <tazjin@tvl.su>
Reviewed-by: Yury Shvedov <yury.shvedov@kaspersky.com>
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Removes imbl::OrdMap in favour of an Rc over the standard library's BTreeMap,
which allows us to drop the imbl dependency completely.
In my local tests this is actually slightly faster for `hello` and `firefox`.
Change-Id: Ic9597ead4e98bf9530f290c6a94a3c5c3efd0acc
Reviewed-on: https://cl.tvl.fyi/c/depot/+/12201
Reviewed-by: aspen <root@gws.fyi>
Tested-by: BuildkiteCI
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This vector type has served us well for now, but it contains internal refcounts
which are incompatible with upcoming changes related to garbage collection.
The performance impact of this change within all benchmarks I ran was within the
margin of error:
[nix-shell:/tmp/perf]$ hyperfine "./before -E '(import <nixpkgs> {}).firefox.outPath' --log-level ERROR --no-warnings"
Benchmark 1: ./u64 -E '(import <nixpkgs> {}).firefox.outPath' --log-level ERROR --no-warnings
Time (mean ± σ): 7.528 s ± 0.272 s [User: 6.578 s, System: 0.631 s]
Range (min … max): 7.160 s … 8.012 s 10 runs
nix-shell:/tmp/perf]$ hyperfine "./std-vec -E '(import <nixpkgs> {}).firefox.outPath' --log-level ERROR --no-warnings"
Benchmark 1: ./std-vec -E '(import <nixpkgs> {}).firefox.outPath' --log-level ERROR --no-warnings
Time (mean ± σ): 7.515 s ± 0.178 s [User: 6.508 s, System: 0.652 s]
Range (min … max): 7.276 s … 7.861 s 10 runs
Change-Id: Ib95f871956e336a1e5771f6293583854b1efb276
Reviewed-on: https://cl.tvl.fyi/c/depot/+/12197
Reviewed-by: aspen <root@gws.fyi>
Tested-by: BuildkiteCI
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This replaces the OpCode enum with a new Op enum which is guaranteed to fit in a
single byte. Instead of carrying enum variants with data, every variant that has
runtime data encodes it into the `Vec<u8>` that a `Chunk` now carries.
This has several advantages:
* Less stack space is required at runtime, and fewer allocations are required
while compiling.
* The OpCode doesn't need to carry "weird" special-cased data variants anymore.
* It is faster (albeit, not by much). On my laptop, results consistently look
approximately like this:
Benchmark 1: ./before -E '(import <nixpkgs> {}).firefox.outPath' --log-level ERROR --no-warnings
Time (mean ± σ): 8.224 s ± 0.272 s [User: 7.149 s, System: 0.688 s]
Range (min … max): 7.759 s … 8.583 s 10 runs
Benchmark 2: ./after -E '(import <nixpkgs> {}).firefox.outPath' --log-level ERROR --no-warnings
Time (mean ± σ): 8.000 s ± 0.198 s [User: 7.036 s, System: 0.633 s]
Range (min … max): 7.718 s … 8.334 s 10 runs
See notes below for why the performance impact might be less than expected.
* It is faster while at the same time dropping some optimisations we previously
performed.
This has several disadvantages:
* The code is closer to how one would write it in C or Go.
* Bit shifting!
* There is (for now) slightly more code than before.
On performance I have the following thoughts at the moment:
In order to prepare for adding GC, there's a couple of places in Tvix where I'd
like to fence off certain kinds of complexity (such as mutating bytecode, which,
for various reaons, also has to be part of data that is subject to GC). With
this change, we can drop optimisations like retroactively modifying existing
bytecode and *still* achieve better performance than before.
I believe that this is currently worth it to pave the way for changes that are
more significant for performance.
In general this also opens other avenues of optimisation: For example, we can
profile which argument sizes actually exist and remove the copy overhead of
varint decoding (which does show up in profiles) by using more adequately sized
types for, e.g., constant indices.
Known regressions:
* Op::Constant is no longer printing its values in disassembly (this can be
fixed, I just didn't get around to it, will do separately).
Change-Id: Id9b3a4254623a45de03069dbdb70b8349e976743
Reviewed-on: https://cl.tvl.fyi/c/depot/+/12191
Tested-by: BuildkiteCI
Reviewed-by: flokli <flokli@flokli.de>
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I'm gonna be doing some poking around in the internals of Context, so in
preparation this pulls it out into its own module.
Change-Id: I72ea7df80b5f36f838934ee07bdba66874c334c9
Reviewed-on: https://cl.tvl.fyi/c/depot/+/12189
Autosubmit: aspen <root@gws.fyi>
Reviewed-by: flokli <flokli@flokli.de>
Tested-by: BuildkiteCI
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This sentence is a little stale; let's just link to NixString directly
for the authoritative source of truth.
Change-Id: I64e065c4148d29702b09820a0e7724a65fae7c67
Reviewed-on: https://cl.tvl.fyi/c/depot/+/12181
Autosubmit: aspen <root@gws.fyi>
Tested-by: BuildkiteCI
Reviewed-by: flokli <flokli@flokli.de>
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Just like tvix-repl does (except we don't force values when printing
them, so... not entirely like tvix-repl does). But it's something.
Change-Id: I2e69b08d7d82b0b2d337f1d4c5d87ed28475fa84
Reviewed-on: https://cl.tvl.fyi/c/depot/+/12180
Reviewed-by: flokli <flokli@flokli.de>
Tested-by: BuildkiteCI
Autosubmit: aspen <root@gws.fyi>
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the answer is at https://cl.tvl.fyi/c/depot/+/10798
Change-Id: I5f0ed51a3954c7241ef15a8268e0e51695e994c6
Reviewed-on: https://cl.tvl.fyi/c/depot/+/12175
Autosubmit: aspen <root@gws.fyi>
Tested-by: BuildkiteCI
Reviewed-by: flokli <flokli@flokli.de>
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Rather than storing the leaked allocation for the string as the key in
the interner, store the hash (using NoHashHashBuilder). I thought this
would improve performance, but it doesn't:
hello outpath time: [736.85 ms 748.42 ms 760.42 ms]
change: [-2.0754% +0.4798% +2.7096%] (p = 0.72 > 0.05)
No change in performance detected.
but it at least doesn't *hurt* performance, and it *does* avoid an
`unsafe`, so it's probably net good.
Change-Id: Ie413955bdb6f04b1f468f511e5ebce56e329fa37
Reviewed-on: https://cl.tvl.fyi/c/depot/+/12049
Tested-by: BuildkiteCI
Reviewed-by: flokli <flokli@flokli.de>
Autosubmit: aspen <root@gws.fyi>
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When we moved to building tvix with crate2nix we had to disable the
readDir tests for the same reasons mentioned in
https://cl.tvl.fyi/c/depot/+/12131. But now with the 12131 CL, we can
re-enable the readDir tests.
In this change I re-enabled the readDir tests in nix_tests by moving
them out of notyetpassing and I also deleted them from tvix_tests
because we don't need them in both places.
Change-Id: I82ac39605299a8b22d80f8b51fc8ec2476d21dc9
Reviewed-on: https://cl.tvl.fyi/c/depot/+/12133
Tested-by: BuildkiteCI
Reviewed-by: flokli <flokli@flokli.de>
Autosubmit: Ilan Joselevich <personal@ilanjoselevich.com>
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builtins.readFileType was added to Nix back in version 2.14.
The tests were also moved out of notyetpassing in addition to the
readDir fixtures they depend on.
I caught a bug where we previously used std::fs::metadata (via the
.metadata() method on File) which follows symlinks so it would always
return false for is_symlink(). Instead we now use
std::fs::symlink_metadata directly which does not follow symlinks, so
tests now pass. This wasn't an issue for builtins.readDir as it uses
walkdir and walkdir doesn't follow symlinks either.
Change-Id: I58eb97bdb5ec95df4f6882f495f8c572fe7c6793
Reviewed-on: https://cl.tvl.fyi/c/depot/+/12130
Reviewed-by: flokli <flokli@flokli.de>
Autosubmit: Ilan Joselevich <personal@ilanjoselevich.com>
Tested-by: BuildkiteCI
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In newer versions of Nix there's a builtins.readFileType builtin, we
should try to avoid duplicating the enum -> string conversion by
implementating Display before we implement builtins.readFileType.
Change-Id: I579e95949a76eb33d2e7bda0000ed84859df765e
Reviewed-on: https://cl.tvl.fyi/c/depot/+/12129
Reviewed-by: flokli <flokli@flokli.de>
Autosubmit: Ilan Joselevich <personal@ilanjoselevich.com>
Tested-by: BuildkiteCI
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Rather than making the interner be a global lazy_static mutex, put it in
a thread-local RefCell. This doesn't change anything in terms of
sharing (since we're currently actually just single threaded), but
avoids the overhead of a mutex, for a nice performance boost (compared
to the mutex version):
hello outpath time: [726.71 ms 729.79 ms 735.69 ms]
change: [-5.7277% -3.9733% -2.1144%] (p = 0.00 < 0.05)
Performance has improved.
Change-Id: I240b238dcbaf854ebafc3017b4425fb7d7b91b03
Reviewed-on: https://cl.tvl.fyi/c/depot/+/12048
Tested-by: BuildkiteCI
Reviewed-by: flokli <flokli@flokli.de>
Autosubmit: aspen <root@gws.fyi>
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This is the most naive version of string interning possible - we store a
map from the string itself to the pointer behind a global mutex, and
memoize the allocation of all strings below a threshold length (16
bytes, for now) into that map. This requires leaking /all/ strings,
since it's not easy to know just from the pointer that a string has been
interned - so interning is disabled if string leaking is also disabled.
In the case where we're leaking strings (the default), even the naive
version of this gets us a pretty nice perfomance boost:
hello outpath time: [742.54 ms 745.89 ms 749.14 ms]
change: [-2.8722% -2.0135% -1.0654%] (p = 0.00 < 0.05)
Performance has improved.
However, in the case where we're not leaking strings, we have to keep
track of which strings have and haven't been interned, which makes this
a little worse:
hello outpath time: [779.30 ms 792.82 ms 808.74 ms]
change: [+2.5258% +4.0884% +5.8931%] (p = 0.00 < 0.05)
Performance has regressed.
Hopefully we can close the gap here a bit with some clever
tricks (coming next).
Change-Id: If08cb48ede703c7fe3bdd8d617443f8a561ad09b
Reviewed-on: https://cl.tvl.fyi/c/depot/+/12047
Tested-by: BuildkiteCI
Reviewed-by: flokli <flokli@flokli.de>
Autosubmit: aspen <root@gws.fyi>
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Per https://nnethercote.github.io/perf-book/hashing.html, we have
basically no reason to use the default hasher over a faster,
non-DoS-resistant hasher. This gives a nice perf boost basically for
free:
hello outpath time: [704.76 ms 714.91 ms 725.63 ms]
change: [-7.2391% -6.1018% -4.9189%] (p = 0.00 < 0.05)
Performance has improved.
Change-Id: If5587f444ed3af69f8af4eead6af3ea303b4ae68
Reviewed-on: https://cl.tvl.fyi/c/depot/+/12046
Tested-by: BuildkiteCI
Reviewed-by: flokli <flokli@flokli.de>
Reviewed-by: Ilan Joselevich <personal@ilanjoselevich.com>
Autosubmit: aspen <root@gws.fyi>
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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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