There's still some shadowing going on, but that's left for a followup
CL.
Change-Id: I02992f1eb494faca99857a3a5ee4dcd47f1b9fd0
Reviewed-on: https://cl.tvl.fyi/c/depot/+/8306
Reviewed-by: tazjin <tazjin@tvl.su>
Autosubmit: flokli <flokli@flokli.de>
Tested-by: BuildkiteCI
This will be published on docs.tvix.dev
Change-Id: I348e057351d5295ad20953c9e9a32c257abab089
Reviewed-on: https://cl.tvl.fyi/c/depot/+/8298
Tested-by: BuildkiteCI
Reviewed-by: flokli <flokli@flokli.de>
The website itself contains no useful information that we don't
already have published anywhere, but it's a decent landing place.
Mostly I want to have something on the root of tvix.dev, so that we
can start using it for other purposes.
Change-Id: Id2b4dabc7f6e4dd26b61484b86dbde2f39aa1719
Reviewed-on: https://cl.tvl.fyi/c/depot/+/8296
Tested-by: BuildkiteCI
Reviewed-by: flokli <flokli@flokli.de>
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>
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
Change-Id: I8224bf039f739c401900b5a2ddc839810c87cf6e
Reviewed-on: https://cl.tvl.fyi/c/depot/+/8226
Tested-by: BuildkiteCI
Reviewed-by: Adam Joseph <adam@westernsemico.com>
We settled on this being the most reasonable name for this construct.
Change-Id: Ic31c45461a842f22aa05f4446123fe3a61dfdbc0
Reviewed-on: https://cl.tvl.fyi/c/depot/+/8291
Tested-by: BuildkiteCI
Autosubmit: tazjin <tazjin@tvl.su>
Reviewed-by: raitobezarius <tvl@lahfa.xyz>
Given Rust's current lack of support for tail calls, we cannot avoid
using `async` for builtins. This is the only way to avoid
overflowing the cpu stack when we have arbitrarily deep
builtin/interpreted/builtin/interpreted/... "sandwiches"
There are only five `async fn` functions which are not builtins
(some come in multiple "flavors"):
- add_values
- resolve_with
- force, final_deep_force
- nix_eq, nix_cmp_eq
- coerce_to_string
These can be written iteratively rather than recursively (and in
fact nix_eq used to be written that way!). I volunteer to rewrite
them. If written iteratively they would no longer need to be
`async`.
There are two motivations for limiting our reliance on `async` to
only the situation (builtins) where we have no other choice:
1. Performance.
We don't really have any good measurement of the performance hit
that the Box<dyn Future>s impose on us. Right now all of our
large (nixpkgs-eval) tests are swamped by the cost of other
things (e.g. fork()ing `nix-store`) so we can't really measure
it. Builtins tend to be expensive operations anyways
(regexp-matching, sorting, etc) that are likely to already cost
more than the `async` overhead.
2. Preserving the ability to switch to `musttail` calls.
Clang/LLVM recently got `musttail` (mandatory-elimination tail
calls). Rust has refused to add this mainly because WASM doesn't
support, but WASM `tail_call` has been implemented and was
recently moved to phase 4 (standardization). It is very likely
that Rust will get tail calls sometime in the next year; if it
does, we won't need async anymore. In the meantime, I'd like to
avoid adding any further reliance on `async` in places where it
wouldn't be straightforward to replace it with a tail call.
https://reviews.llvm.org/D99517https://github.com/WebAssembly/proposals/pull/157
https: //github.com/rust-lang/rfcs/issues/2691#issuecomment-1462152908
Change-Id: Id15945d5a92bf52c16d93456e3437f91d93bdc57
Reviewed-on: https://cl.tvl.fyi/c/depot/+/8290
Reviewed-by: tazjin <tazjin@tvl.su>
Tested-by: BuildkiteCI
Autosubmit: Adam Joseph <adam@westernsemico.com>
This commit moves fetch_forced_with and fetch_captured_with into the
scope of their only caller (resolve_with).
Change-Id: I9a8bc27228888729d591e8cb021c431b2b6468f5
Reviewed-on: https://cl.tvl.fyi/c/depot/+/8289
Autosubmit: Adam Joseph <adam@westernsemico.com>
Reviewed-by: tazjin <tazjin@tvl.su>
Tested-by: BuildkiteCI
This rewrites nix_cmp_ordering as an iterative loop, which
eliminates the extra pinned-boxing helper function.
Change-Id: I33d0ecc913e02affd8fd4c7bc1c9ecfdf4c7deb9
Reviewed-on: https://cl.tvl.fyi/c/depot/+/8288
Reviewed-by: tazjin <tazjin@tvl.su>
Tested-by: BuildkiteCI
Autosubmit: Adam Joseph <adam@westernsemico.com>
* We no longer need backtrace-on-stack-overflow, as we no longer
overflow the stack with the recent eval refactorings. This was weird
voodoo anyways, introduced earlier to debug some cases where stack
overflows occured.
* default features of genawaiter crate are not needed, as we don't use
their proc macros
Change-Id: I346fc5a18d7f117ee805909a8be8f535b96be76c
Reviewed-on: https://cl.tvl.fyi/c/depot/+/8263
Reviewed-by: flokli <flokli@flokli.de>
Tested-by: BuildkiteCI
Reviewed-by: raitobezarius <tvl@lahfa.xyz>
This reorders the operations in the VM's main `match` statement while
evaluating bytecode according to the frequency with which these
operations appear in some nixpkgs evaluations.
I used raw data that looks like this:
https://gist.github.com/tazjin/63d0788a78eb8575b04defaad4ef610d
This has a small but noticeable impact on evaluation performance.
No operations have changed in any way, this is purely moving code
around.
Change-Id: Iaa4ef4f0577e98144e8905fec88149c41e8c315c
Reviewed-on: https://cl.tvl.fyi/c/depot/+/8262
Reviewed-by: raitobezarius <tvl@lahfa.xyz>
Reviewed-by: flokli <flokli@flokli.de>
Tested-by: BuildkiteCI
The name of this was not accurate anymore after all the recent
shuffling, as noted by amjoseph. Conceptual tail calls here only occur
for Nix bytecode calling Nix bytecode, but things like a builtin call
actually push a new native frame.
Change-Id: I1dea8c9663daf86482b8c7b5a23133254b5ca321
Reviewed-on: https://cl.tvl.fyi/c/depot/+/8256
Tested-by: BuildkiteCI
Reviewed-by: raitobezarius <tvl@lahfa.xyz>
... except now the tests fail, but at least it works
Change-Id: I05e86c173f40533ae65548585c1ddaa200ac5235
Reviewed-on: https://cl.tvl.fyi/c/depot/+/8214
Reviewed-by: raitobezarius <tvl@lahfa.xyz>
Tested-by: BuildkiteCI
This file which ships with C++ Nix is required for evaluating nixpkgs.
Like C++ Nix, we now inject a pseudo path in EvalIO from which this
will resolve as <nix/fetchurl.nix>
Change-Id: Ic948c476a2cfc6381d5655d308bc2d5fa25b7123
Reviewed-on: https://cl.tvl.fyi/c/depot/+/8213
Reviewed-by: raitobezarius <tvl@lahfa.xyz>
Tested-by: BuildkiteCI
This drops the usage of serde::Serialize, as the trait can not be used
to implement the correct semantics (function colouring!).
Instead, a manual JSON serialisation function is written which
correctly handles toString, outPath and other similar weirdnesses.
Unexpectedly, the eval-okay-tojson test from the C++ Nix test suite
now passes, too.
This fixes an issue where serialising data structures containing
derivations to JSON would fail.
Change-Id: I5c39e3d8356ee93a07eda481410f88610f6dd9f8
Reviewed-on: https://cl.tvl.fyi/c/depot/+/8209
Reviewed-by: raitobezarius <tvl@lahfa.xyz>
Tested-by: BuildkiteCI
This adds static strings to generator frames that describe the
generator in a human-readable fashion, which are then logged in
observers.
This makes runtime traces very precise, explaining exactly what is
being requested from where.
Change-Id: I695659a6bd0b7b0bdee75bc8049651f62b150e0c
Reviewed-on: https://cl.tvl.fyi/c/depot/+/8206
Tested-by: BuildkiteCI
Reviewed-by: raitobezarius <tvl@lahfa.xyz>
These are serialised as the serialisation of the value of that field.
Change-Id: Ida51708b1f43ce09b0ec835f4e265918aa31dd09
Reviewed-on: https://cl.tvl.fyi/c/depot/+/8205
Reviewed-by: raitobezarius <tvl@lahfa.xyz>
Tested-by: BuildkiteCI
These must be serialised to a JSON string of the *result* of coercing
the function application to a string.
Change-Id: Ib7f49ccd950503ddbdbf99643cd59565e26b50da
Reviewed-on: https://cl.tvl.fyi/c/depot/+/8204
Reviewed-by: raitobezarius <tvl@lahfa.xyz>
Tested-by: BuildkiteCI
It turns out that this is used not just in coerceToString, but also in
toJSON.
Change-Id: I1c324b115a0b8bb6d83446d5bf70453c9b90685e
Reviewed-on: https://cl.tvl.fyi/c/depot/+/8203
Tested-by: BuildkiteCI
Reviewed-by: raitobezarius <tvl@lahfa.xyz>
Do not print the entire value (they're likely to be thunks anyways).
This is useful because there *can* be cases where something like
`nixpkgs` itself is sent through one of these messages, in which case
the observer trying to print it will just blow up.
Change-Id: I1fa37ea071d75efa0eb3428c6e2fe4351c62be6b
Reviewed-on: https://cl.tvl.fyi/c/depot/+/8202
Tested-by: BuildkiteCI
Reviewed-by: raitobezarius <tvl@lahfa.xyz>
Print only the top 6 values of the stack, not the entire stack.
There's very few operations that deal with more values anyways, so the
rest are not likely to be useful.
This gets us one step closer to tracing VERY large executions without
blowing up.
Change-Id: I97472321b0321b25d534d9f53b3aadfacc2318fa
Reviewed-on: https://cl.tvl.fyi/c/depot/+/8201
Tested-by: BuildkiteCI
Reviewed-by: raitobezarius <tvl@lahfa.xyz>
This can actually blow up when tracing arbitrary execution, as some of
the data structures just get too large to run through a tabwriter.
Change-Id: I6ec4c30ee48655b8a62954ca219107404fb2c256
Reviewed-on: https://cl.tvl.fyi/c/depot/+/8200
Tested-by: BuildkiteCI
Reviewed-by: raitobezarius <tvl@lahfa.xyz>
Formals can be initialised with deferred default values (see the test
cases), in which case they need an extra thunk to have something that
can be finalised appropriately when the setup is done.
Fixes: b/255
Change-Id: I380e3770be68eaa83ace96d450c7cead32dacc9f
Reviewed-on: https://cl.tvl.fyi/c/depot/+/8196
Tested-by: BuildkiteCI
Reviewed-by: raitobezarius <tvl@lahfa.xyz>
This shaves another 8 bytes off Value. How did that type get so big?!
Change-Id: I65e9b59a1636bd57e3cc4aec5fea16887070b832
Reviewed-on: https://cl.tvl.fyi/c/depot/+/8153
Reviewed-by: raitobezarius <tvl@lahfa.xyz>
Tested-by: BuildkiteCI
No longer needed, and in some cases caused some extra work.
Change-Id: I64e8e7292573bdc92a9c7a8e470e33f8c526f311
Reviewed-on: https://cl.tvl.fyi/c/depot/+/8152
Reviewed-by: raitobezarius <tvl@lahfa.xyz>
Tested-by: BuildkiteCI
Instead of the two different representations (which we don't really
use much), use a `Box<str>` (which potentially shaves another 8 bytes
off `Value`).
NixString values themselves are immutable anyways (which was a
guarantee we already had with `SmolStr`), so this doesn't change
anything else.
Change-Id: I1d8454c056c21ecb0aebc473cfb3ae06cd70dbb6
Reviewed-on: https://cl.tvl.fyi/c/depot/+/8151
Reviewed-by: raitobezarius <tvl@lahfa.xyz>
Reviewed-by: flokli <flokli@flokli.de>
Tested-by: BuildkiteCI
The size of a `Vector<Value>` is 64 *bytes*, which is quite large, and
it bloated the entire Value type to this size.
This change adds an indirection for the inner vector through Rc.
Initially I tried to use a Box, but this breaks pointer equality
guarantees for the Vector when it is small enough to be inlined.
This reduces the size of Value from 64 to 32 bytes.
Change-Id: Ic3211e861b1966c78b2c3d536ba291fea92647fd
Reviewed-on: https://cl.tvl.fyi/c/depot/+/8150
Reviewed-by: raitobezarius <tvl@lahfa.xyz>
Tested-by: BuildkiteCI
Warning: This is probably the biggest refactor in tvix-eval history,
so far.
This replaces all instances of trampolines and recursion during
evaluation of the VM loop with generators. A generator is an
asynchronous function that can be suspended to yield a message (in our
case, vm::generators::GeneratorRequest) and receive a
response (vm::generators::GeneratorResponsee).
The `genawaiter` crate provides an interpreter for generators that can
drive their execution and lets us move control flow between the VM and
suspended generators.
To do this, massive changes have occured basically everywhere in the
code. On a high-level:
1. The VM is now organised around a frame stack. A frame is either a
call frame (execution of Tvix bytecode) or a generator frame (a
running or suspended generator).
The VM has an outer loop that pops a frame off the frame stack, and
then enters an inner loop either driving the execution of the
bytecode or the execution of a generator.
Both types of frames have several branches that can result in the
frame re-enqueuing itself, and enqueuing some other work (in the
form of a different frame) on top of itself. The VM will eventually
resume the frame when everything "above" it has been suspended.
In this way, the VM's new frame stack takes over much of the work
that was previously achieved by recursion.
2. All methods previously taking a VM have been refactored into async
functions that instead emit/receive generator messages for
communication with the VM.
Notably, this includes *all* builtins.
This has had some other effects:
- Some test have been removed or commented out, either because they
tested code that was mostly already dead (nix_eq) or because they
now require generator scaffolding which we do not have in place for
tests (yet).
- Because generator functions are technically async (though no async
IO is involved), we lose the ability to use much of the Rust
standard library e.g. in builtins. This has led to many algorithms
being unrolled into iterative versions instead of iterator
combinations, and things like sorting had to be implemented from scratch.
- Many call sites that previously saw a `Result<..., ErrorKind>`
bubble up now only see the result value, as the error handling is
encapsulated within the generator loop.
This reduces number of places inside of builtin implementations
where error context can be attached to calls that can fail.
Currently what we gain in this tradeoff is significantly more
detailed span information (which we still need to bubble up, this
commit does not change the error display).
We'll need to do some analysis later of how useful the errors turn
out to be and potentially introduce some methods for attaching
context to a generator frame again.
This change is very difficult to do in stages, as it is very much an
"all or nothing" change that affects huge parts of the codebase. I've
tried to isolate changes that can be isolated into the parent CLs of
this one, but this change is still quite difficult to wrap one's mind
and I'm available to discuss it and explain things to any reviewer.
Fixes: b/238, b/237, b/251 and potentially others.
Change-Id: I39244163ff5bbecd169fe7b274df19262b515699
Reviewed-on: https://cl.tvl.fyi/c/depot/+/8104
Reviewed-by: raitobezarius <tvl@lahfa.xyz>
Reviewed-by: Adam Joseph <adam@westernsemico.com>
Tested-by: BuildkiteCI
Adds a `Value::neo_nix_eq` method (the `neo_` prefix will be dropped
when we flip over to the generator implementation of the VM) which
implements Nix equality semantics using async, generator-based
comparisons.
Instead of tracking the "kind" of equality that is being compared (see
the pointer-equality doc) through a pair of booleans, I've introduced
an enum that explicitly lists the possible comparisons.
Change-Id: I3354cc1470eeccb3000a5ae24f2418db1a7a2edc
Reviewed-on: https://cl.tvl.fyi/c/depot/+/8241
Tested-by: BuildkiteCI
Reviewed-by: Adam Joseph <adam@westernsemico.com>
These functions will be used by the changes in the VM to observe the
runtime execution of generator frames, and provide a more linear view
of the execution of the Tvix VM.
Change-Id: I10b1b1933dedc065e7c61d5d6062f0aaeee0097e
Reviewed-on: https://cl.tvl.fyi/c/depot/+/8240
Tested-by: BuildkiteCI
Reviewed-by: Adam Joseph <adam@westernsemico.com>
In order to implement an asynchronous builtins.sort (required for
moving builtins to generators), we need an `async` sorting algorithm
as our comparators involve invoking a Nix function.
This commit implements a fairly simple, optimised bubble sort as the
sorting algorithm used in our `async fn sort_by`.
There don't seem to be any crates providing async versions of things
like this, and they might actually be pretty hard to implement
generically due to some constraints about how `async` works.
Note that this algorithm is less efficient than the hybrid
"timsort/mergesort/insert sort" used in the Rust standard library. I
tried to write a merge sort implementation, but ran into isuses with
the sort becoming unstable because our comparators can not yield
equality. This is the simplest implementation which I know to be
correct.
Note that as of this commit this is *not* covered by the Tvix test
suite, but it will be as soon as the rest of the generator code lands.
Change-Id: Ia9a604f7dd941d6acc9212c902e0e637ed75bebc
Reviewed-on: https://cl.tvl.fyi/c/depot/+/8239
Reviewed-by: Adam Joseph <adam@westernsemico.com>
Tested-by: BuildkiteCI
All code initially using this has been replaced by the simpler and more
performant implementation with StreamCDC and read_all_and_chunk.
Change-Id: I08889e9a6984de91c5debcf2b612cb68ae5072d1
Reviewed-on: https://cl.tvl.fyi/c/depot/+/8265
Autosubmit: flokli <flokli@flokli.de>
Reviewed-by: tazjin <tazjin@tvl.su>
Reviewed-by: raitobezarius <tvl@lahfa.xyz>
Tested-by: BuildkiteCI
This was the last piece of code using BlobWriter.
We can also use `read_all_and_chunk`, it's just requires a bit more
plumbing:
- The data coming from the client (stream) needs to be mapped (we
extract the .data field).
- The stream needs to be turned into an (async) reader
- The reader needs to be made sync, and that code using the sync reader
needs to be in a `task::spawn_blocking`.
Change-Id: I4e374e1a9f47d5a0933f59a8f5c121185a5f3e95
Reviewed-on: https://cl.tvl.fyi/c/depot/+/8260
Autosubmit: flokli <flokli@flokli.de>
Reviewed-by: raitobezarius <tvl@lahfa.xyz>
Tested-by: BuildkiteCI
Reviewed-by: tazjin <tazjin@tvl.su>
This moves the logic from src/import.rs that
- reads over the contents of a file
- chunks them up and uploads individual chunks
- keeps track of the uploaded chunks in a BlobMeta structure
- returns the hash of the blob and the BlobMeta structure
… into a generic read_all_and_chunk function in
src/chunkservice/util.rs.
It will work on anything implementing io::Read, not just files, which
will help us in a bit.
Change-Id: I53bf628114b73ee2e515bdae29974571ea2b6f6f
Reviewed-on: https://cl.tvl.fyi/c/depot/+/8259
Reviewed-by: tazjin <tazjin@tvl.su>
Tested-by: BuildkiteCI
Reviewed-by: raitobezarius <tvl@lahfa.xyz>
Autosubmit: flokli <flokli@flokli.de>
Make use of the helper function here as well.
Change-Id: Ia0afd84eb3903bb897ee6aee884dc291f3e4371c
Reviewed-on: https://cl.tvl.fyi/c/depot/+/8258
Reviewed-by: raitobezarius <tvl@lahfa.xyz>
Autosubmit: flokli <flokli@flokli.de>
Reviewed-by: tazjin <tazjin@tvl.su>
Tested-by: BuildkiteCI
When building tvix-store without default features, this variable doesn't
need to be mutable. Silence the warning.
Change-Id: Iec61be0064c0cef276a29ef22e5c4af3b052efe8
Reviewed-on: https://cl.tvl.fyi/c/depot/+/8267
Reviewed-by: raitobezarius <tvl@lahfa.xyz>
Tested-by: BuildkiteCI
Autosubmit: flokli <flokli@flokli.de>
We currently send two warnings in case of detecting dead code - W008
inside compile_dead_code, and a more detailed warning in all places that
invoke compile_dead_code:
```
warning[W007]: useless operation on boolean: this expression is always false
--> /nix/store/qz3gjn95gazab4fkb7s8lm6hz17rdzzy-414z9nnj1wy66ymq6vgb693x9xjz6hf2-nixpkgs-src/pkgs/top-level/perl-packages.nix:12079:15
|
12079 | doCheck = false && !stdenv.isDarwin;
| ^^^^^^^^^^^^^^^^^^^^^^^^^
warning[W008]: this code will never be executed
--> /nix/store/qz3gjn95gazab4fkb7s8lm6hz17rdzzy-414z9nnj1wy66ymq6vgb693x9xjz6hf2-nixpkgs-src/pkgs/top-level/perl-packages.nix:12079:24
|
12079 | doCheck = false && !stdenv.isDarwin;
| ^^^^^^^^^^^^^^^^
```
The place invoking `compile_dead_code` has more context to why the code
is unused, so it's error message is much more useful.
Stop emitting the less informative warning inside compile_dead_code
(W008), and update the comment that we expect the caller to emit a
warning.
I kept W008 itself still around, in case we end up having places this
will get used again.
Change-Id: I2c5d84fc0cb4035872cd4b71cc3e9e34e120eb37
Reviewed-on: https://cl.tvl.fyi/c/depot/+/8024
Tested-by: BuildkiteCI
Autosubmit: flokli <flokli@flokli.de>
Reviewed-by: raitobezarius <tvl@lahfa.xyz>
This removes the use of Box::new, switching fastcdc to version 3.0.2
with https://github.com/nlfiedler/fastcdc-rs/issues/25 fixed.
Change-Id: I64f388b9e0a7f358e25a8bb7ca0e4df1d3bb01c4
Reviewed-on: https://cl.tvl.fyi/c/depot/+/8249
Tested-by: BuildkiteCI
Reviewed-by: raitobezarius <tvl@lahfa.xyz>
Reviewed-by: tazjin <tazjin@tvl.su>
Autosubmit: flokli <flokli@flokli.de>
We're using this in a bunch of places. Let's move it into a helper
function.
Change-Id: I118fba35f6d343704520ba37280e4ca52a61da44
Reviewed-on: https://cl.tvl.fyi/c/depot/+/8251
Autosubmit: flokli <flokli@flokli.de>
Tested-by: BuildkiteCI
Reviewed-by: raitobezarius <tvl@lahfa.xyz>
This is useful not only in blobwriter contexts.
Change-Id: I4c584b5264ff7b4bb3b1a9671affc39e18bf4ccf
Reviewed-on: https://cl.tvl.fyi/c/depot/+/8245
Tested-by: BuildkiteCI
Autosubmit: flokli <flokli@flokli.de>
Reviewed-by: raitobezarius <tvl@lahfa.xyz>
This already is a &CS, so we don't need to clone().
Change-Id: I5397a5948ae7fe4781f18df760a79047f83dca01
Reviewed-on: https://cl.tvl.fyi/c/depot/+/8243
Tested-by: BuildkiteCI
Autosubmit: flokli <flokli@flokli.de>
Reviewed-by: tazjin <tazjin@tvl.su>
Look at the data that's written to us, and upload all chunks but the
rest in parallel, using rayon. This required moving `upload_chunk`
outside the struct, and accepting a ChunkService to use for upload
(which it was previously getting from `self.chunk_service`).
This doesn't speed up things too much for now, because things are still
mostly linear.
Change-Id: Id785b5705c3392214d2da1a5b6a182bcf5048c8d
Reviewed-on: https://cl.tvl.fyi/c/depot/+/8195
Autosubmit: flokli <flokli@flokli.de>
Tested-by: BuildkiteCI
Reviewed-by: raitobezarius <tvl@lahfa.xyz>
The Directory service does already reject inserting invalid (wrongly
sorted) Directory messages, but our test case didn't provoke it.
Change-Id: I228e201925e8999186659a2d8da0118db184d9ab
Reviewed-on: https://cl.tvl.fyi/c/depot/+/8167
Tested-by: BuildkiteCI
Reviewed-by: raitobezarius <tvl@lahfa.xyz>
This exposes the previous default behavior at the `tvix-store daemon`
subcommand.
It also adds a `tvix-store import` command, which will ingest a given
path into the store.
Change-Id: Ide14f1d409b9364e7f98090690c744326486e470
Reviewed-on: https://cl.tvl.fyi/c/depot/+/8166
Tested-by: BuildkiteCI
Reviewed-by: raitobezarius <tvl@lahfa.xyz>
This provides a service using /dev/shm, that's deleted once the
reference is dropped.
Refactor all tests to use these, which allows getting rid of most
TempDir usage in the tests.
The only place where we still use TempDir is in the importer tests,
which work on a filesystem path.
Change-Id: I08a950aa774bf9b46d9f5c92edf5efba36053242
Reviewed-on: https://cl.tvl.fyi/c/depot/+/8193
Reviewed-by: raitobezarius <tvl@lahfa.xyz>
Tested-by: BuildkiteCI
While we don't want to keep all of the data in memory, we want to
feed a reasonably-enough buffer to the chunking function, to prevent
unnecessarily trying to chunk over and over again.
Change-Id: I5bbe2d55e8c1c63f8f7ce343889d374b528b559e
Reviewed-on: https://cl.tvl.fyi/c/depot/+/8160
Tested-by: BuildkiteCI
Reviewed-by: raitobezarius <tvl@lahfa.xyz>
This imports the contents at a given Path into the tvix store.
It doesn't register the contents at a Path in the store itself, that's up
to the PathInfoService.
Change-Id: I2c493532d65b90f199ddb7dfc90249f5c2957dee
Reviewed-on: https://cl.tvl.fyi/c/depot/+/8159
Reviewed-by: raitobezarius <tvl@lahfa.xyz>
Tested-by: BuildkiteCI
This also uploaded HELLOWORLD_BLOB_CONTENTS before, but it's not
referred from anywhere in the fixture.
Change-Id: I823133afe0f08d18a59e2ac4e4d4bb7d34ce8a2b
Reviewed-on: https://cl.tvl.fyi/c/depot/+/8158
Tested-by: BuildkiteCI
Reviewed-by: raitobezarius <tvl@lahfa.xyz>
This allows hiding to tests what exact implementation we're using, when
testing things that do something with a store, but don't care what's
used for underlying storage.
Change-Id: I7cdf60fd73c25d5050159cb31ec177db2bc2a7f1
Reviewed-on: https://cl.tvl.fyi/c/depot/+/8155
Tested-by: BuildkiteCI
Reviewed-by: raitobezarius <tvl@lahfa.xyz>
This will moves the chunking-as-we-receive logic that so far only lived
in grpc_blobservice_wrapper.rs into a generic BlobWriter.
Change-Id: Ief7d1bda3c6280129f7139de3f6c4174be2ca6ea
Reviewed-on: https://cl.tvl.fyi/c/depot/+/8154
Tested-by: BuildkiteCI
Reviewed-by: raitobezarius <tvl@lahfa.xyz>
Use the FastCDC::cut function to ask fastcd for cutting points as we
receive the data. Make sure to keep the last chunk in the temporary
buffer, as we might not actually cut at the end.
Also, use rayon to calculate the blake3 hash if the input data is
> 128KiB.
Change-Id: I6195f3b74eac5516965cb12d8d026aa720c8b891
Reviewed-on: https://cl.tvl.fyi/c/depot/+/8135
Reviewed-by: raitobezarius <tvl@lahfa.xyz>
Tested-by: BuildkiteCI
This switches away from the less canonical "ronomon" version to the
implementation as described in the
[paper](https://ieeexplore.ieee.org/document/9055082) by Wen Xia, et
al., in 2020.
That version uses 64-bit hash values and tends to be faster than both
the ronomon and v2016 versions, and produces the same chunking as the
2016 version.
As per https://docs.rs/fastcdc/latest/fastcdc/#implementations-1, it's
the recommended choice.
The crate also gained support for streaming version of chunkers:
https://docs.rs/fastcdc/latest/fastcdc/#large-data, which might be
useful.
Change-Id: Ieabec3da54eb2b73c045cb54e51f7a216f63641e
Reviewed-on: https://cl.tvl.fyi/c/depot/+/8134
Reviewed-by: raitobezarius <tvl@lahfa.xyz>
Tested-by: BuildkiteCI
These were implementing against the (more complicated) gRPC interface,
for which we now have a wrapper.
Change-Id: I0a8284493718ab99618a1d21a76df4d173edb899
Reviewed-on: https://cl.tvl.fyi/c/depot/+/8100
Reviewed-by: raitobezarius <tvl@lahfa.xyz>
Tested-by: BuildkiteCI
This swaps out the implementation used in the main entrypoint.
We now use the non-gRPC aware Sled*Service, and wrap it with
GRPC*ServiceWrapper to spin up the gRPC server.
Change-Id: I5a1236c0612eee85e49891062040127c8bd95058
Reviewed-on: https://cl.tvl.fyi/c/depot/+/8106
Reviewed-by: raitobezarius <tvl@lahfa.xyz>
Tested-by: BuildkiteCI
This exposes a proto::pathinfo_service_server::PathInfoService for a
directoryservice::PathInfoService and a way to calculate NARs.
Change-Id: I30cd058562f83d063c78b84976ec97190de49400
Reviewed-on: https://cl.tvl.fyi/c/depot/+/8097
Tested-by: BuildkiteCI
Reviewed-by: raitobezarius <tvl@lahfa.xyz>
This adds a PathInfoService trait, and an implementation for it using
sled, and one using a HashMap.
Change-Id: I85fe4c9b6105808d7b0c095441326424ffc2d2bb
Reviewed-on: https://cl.tvl.fyi/c/depot/+/8099
Tested-by: BuildkiteCI
Reviewed-by: raitobezarius <tvl@lahfa.xyz>
This adds a NARCalculationService trait, which will take a root node,
and provide a proto::CalculateNarResponse in return.
It also adds a NonCachingNARCalculationService implementation, that will
simply always render the NAR in memory to calculate the size and sha256,
without any caching.
Change-Id: Id1ffb18559212fa6001f70f2634bbc3dfd0aa343
Reviewed-on: https://cl.tvl.fyi/c/depot/+/8096
Reviewed-by: raitobezarius <tvl@lahfa.xyz>
Tested-by: BuildkiteCI
Make sure the blob size in the current proto node matches what we get
back from the blob backend.
Change-Id: I939fa18f37c7bc86ada8a495c7be622e69ec47f8
Reviewed-on: https://cl.tvl.fyi/c/depot/+/8129
Tested-by: BuildkiteCI
Reviewed-by: raitobezarius <tvl@lahfa.xyz>
It's much easier to just unwrap the TempDir::new() result.
Change-Id: I7b05bc18f3146401e30e1cc2bb412503c5171a66
Reviewed-on: https://cl.tvl.fyi/c/depot/+/8128
Reviewed-by: raitobezarius <tvl@lahfa.xyz>
Tested-by: BuildkiteCI
This moves the logic rendering NARs to a struct using the
previously introduced, more granular BlobService, ChunkService and
DirectoryService.
Instead of passing them around to the helper functions, they're kept as
members of a struct.
Remove the async invocations in the nar_renderer tests, there's nothing
async in here.
Change-Id: Ic6d24aaad68a1fda46ce29f2cdb5f7b87f481d5c
Reviewed-on: https://cl.tvl.fyi/c/depot/+/8095
Reviewed-by: raitobezarius <tvl@lahfa.xyz>
Tested-by: BuildkiteCI
This exposes a proto::directory_service_server::DirectoryService for a
directoryservice::DirectoryService.
Change-Id: I191a6e44e5bce10d904b5f10f0073d6adaf1f572
Reviewed-on: https://cl.tvl.fyi/c/depot/+/8094
Reviewed-by: raitobezarius <tvl@lahfa.xyz>
Tested-by: BuildkiteCI
This adds a DirectoryService trait, and an implementation for it using
sled, and one using a HashMap.
Change-Id: Ida61524b2ca949e1b3a78089a5aa7d9f9800c8d7
Reviewed-on: https://cl.tvl.fyi/c/depot/+/8093
Tested-by: BuildkiteCI
Reviewed-by: raitobezarius <tvl@lahfa.xyz>
This takes a BlobService and ChunkService in the constructor, and
provides a [proto::blob_service_server::BlobService] trait for it.
Implementing proto::blob_service_server::BlobService is a lot of surface
to cover, and providing this wrapper will make individual
implementations taking care of how to store chunks or chunking
information much simpler.
Change-Id: Ia7b46484fb3ac9104354d496ff2922dca96ff7b9
Reviewed-on: https://cl.tvl.fyi/c/depot/+/8092
Reviewed-by: raitobezarius <tvl@lahfa.xyz>
Tested-by: BuildkiteCI
This allows adding more stuff into this namespace, from different files.
Also move tests on proto-related code from src/tests to src/proto/tests.
Change-Id: I49e066fce90efbc18e16d68f94497b32ed5625c0
Reviewed-on: https://cl.tvl.fyi/c/depot/+/8091
Reviewed-by: tazjin <tazjin@tvl.su>
Reviewed-by: raitobezarius <tvl@lahfa.xyz>
Tested-by: BuildkiteCI
A BlobReader can be used to read a blob, which might consist out of
multiple chunks. Chunks are fetched from a ChunkService.
Change-Id: I1806225b0052adaa4a2320b79b744e554e524ee3
Reviewed-on: https://cl.tvl.fyi/c/depot/+/8088
Tested-by: BuildkiteCI
Reviewed-by: raitobezarius <tvl@lahfa.xyz>
Reviewed-by: tazjin <tazjin@tvl.su>
This module contains the request/response types for generators
requesting actions from the VM.
For most of these, an async helper function is added that will be used
inside of generator functions to make use of these requests/responses
instead of constructing them directly.
Change-Id: I1e085f88adaf784a34867957a0e82532d3a83d7c
Reviewed-on: https://cl.tvl.fyi/c/depot/+/8148
Tested-by: BuildkiteCI
Reviewed-by: raitobezarius <tvl@lahfa.xyz>
As applies are thunked, there was no situation where OpCall could be
emitted. In practice, all calls were already tail calls.
Change-Id: Id0d441dcdd86f804d7cddd0cc14f589bbfc75e5b
Reviewed-on: https://cl.tvl.fyi/c/depot/+/8147
Tested-by: BuildkiteCI
Reviewed-by: raitobezarius <tvl@lahfa.xyz>
This adds a BlobService trait, and an implementation for it using sled,
and one using a HashMap.
Change-Id: Id6bc1b629195d0b26fc503bd7d2dc9e43c41c317
Reviewed-on: https://cl.tvl.fyi/c/depot/+/8087
Tested-by: BuildkiteCI
Reviewed-by: tazjin <tazjin@tvl.su>
This adds the simpler ChunkService trait, and an implementation for it
using sled, and one using a HashMap.
Change-Id: Icb0fdc41b37b44e9e9e4f548d0f4acae1d83b71e
Reviewed-on: https://cl.tvl.fyi/c/depot/+/8086
Reviewed-by: raitobezarius <tvl@lahfa.xyz>
Tested-by: BuildkiteCI
This came up recently again, it makes sense to document the reasoning
behind the decision.
Change-Id: Ic51d5bc7998c70e8b070b6f42877d8e88613935b
Reviewed-on: https://cl.tvl.fyi/c/depot/+/8223
Reviewed-by: raitobezarius <tvl@lahfa.xyz>
Tested-by: BuildkiteCI
Autosubmit: flokli <flokli@flokli.de>
Because they do not use it, and it can not be passed with the coming
generator refactoring.
Change-Id: I0d96f2357a7ee79cd8a0f401583d4286230d4a6b
Reviewed-on: https://cl.tvl.fyi/c/depot/+/8146
Tested-by: BuildkiteCI
Reviewed-by: raitobezarius <tvl@lahfa.xyz>
Instead of using a suspended native thunk, calculate and optionally
insert the storeDir builtin when the VM is constructed.
We already have the IO handle available at this point and can just
check whether a storeDir is present, and insert its absolute value as
a builtin.
Change-Id: If966eee6ff26dc888b6e888e7c46170c0c346b05
Reviewed-on: https://cl.tvl.fyi/c/depot/+/8145
Reviewed-by: raitobezarius <tvl@lahfa.xyz>
Tested-by: BuildkiteCI
This is a ThunkSet wrapped to be shareable, which will be required
once ThunkSets are embedded in futures.
Change-Id: I5a067b7972ac86e4d354c75ef05c86b2284c1137
Reviewed-on: https://cl.tvl.fyi/c/depot/+/8144
Tested-by: BuildkiteCI
Reviewed-by: raitobezarius <tvl@lahfa.xyz>
Again simplifying some code down the line, where bits of code that
construct attribute sets already have the final structure available.
Change-Id: I0bb7a1daa63298122b51be73d35d695a4f73f8b0
Reviewed-on: https://cl.tvl.fyi/c/depot/+/8140
Reviewed-by: raitobezarius <tvl@lahfa.xyz>
Tested-by: BuildkiteCI
This simplifies some code down the line.
Change-Id: I58dd71e796e11479f44516cf24932f8061843d23
Reviewed-on: https://cl.tvl.fyi/c/depot/+/8139
Tested-by: BuildkiteCI
Reviewed-by: raitobezarius <tvl@lahfa.xyz>
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>
This provides a way to construct a NixHash struct without parsing
strings.
Change-Id: I947d96e15e51e72d5b02929cda8c5fc31d81253a
Reviewed-on: https://cl.tvl.fyi/c/depot/+/8217
Tested-by: BuildkiteCI
Autosubmit: flokli <flokli@flokli.de>
Reviewed-by: tazjin <tazjin@tvl.su>
We ironically didn't add support parsing for the "native" format that
Nix uses under the hood.
This extends the from_str method to peek at the prefix of the string to
determine whether to try decoding as SRI, Nix string, or whether it
should be a bare digest.
Change-Id: I33efd24968b16f86eff18305b4ca8f112c7131d7
Reviewed-on: https://cl.tvl.fyi/c/depot/+/8216
Reviewed-by: tazjin <tazjin@tvl.su>
Autosubmit: flokli <flokli@flokli.de>
Tested-by: BuildkiteCI
This will be used for both Nix hash strings and hash strings without the
algo specified.
Change-Id: Iedfe5494fba5f2be00614ba0fc38bf659eafd447
Reviewed-on: https://cl.tvl.fyi/c/depot/+/8215
Tested-by: BuildkiteCI
Reviewed-by: tazjin <tazjin@tvl.su>
This adds addresses of thunk and closure chunks to the debug output
displayed when dumping bytecode.
This makes it possible to see in the dump which thunks are referenced
by constants in other thunks.
Change-Id: I2c98de5227e7cb415666cd3134c947a56979dc80
Reviewed-on: https://cl.tvl.fyi/c/depot/+/8137
Autosubmit: tazjin <tazjin@tvl.su>
Reviewed-by: flokli <flokli@flokli.de>
Tested-by: BuildkiteCI
This CL removes calling into_iter on a reference, as it will
not move out it's content into resulting iterator.
Change-Id: Ifcc10b7cf33b98453570cbcec3eb82ffaba2ffcb
Signed-off-by: Aaqa Ishtyaq <aaqaishtyaq@gmail.com>
Reviewed-on: https://cl.tvl.fyi/c/depot/+/8126
Reviewed-by: tazjin <tazjin@tvl.su>
Tested-by: BuildkiteCI
This CL removes redundant clone from value which is
going to be dropped without further use.
Change-Id: Ibd2a724853c5cfbf8ca40bf0b3adf0fab89b9be5
Signed-off-by: Aaqa Ishtyaq <aaqaishtyaq@gmail.com>
Reviewed-on: https://cl.tvl.fyi/c/depot/+/8125
Reviewed-by: tazjin <tazjin@tvl.su>
Tested-by: BuildkiteCI
Instead of using an explicit closure to clone elements, use .cloned().
Change-Id: I31f0f0bad2b4935e1a8d91fa0d14163c94182e1b
Reviewed-on: https://cl.tvl.fyi/c/depot/+/8109
Autosubmit: flokli <flokli@flokli.de>
Tested-by: BuildkiteCI
Reviewed-by: tazjin <tazjin@tvl.su>
The size field already is u32, we don't need to convert here.
Change-Id: Ie29819aa2d1d8022e9bd73fcf05b140e45c967a9
Reviewed-on: https://cl.tvl.fyi/c/depot/+/8107
Reviewed-by: tazjin <tazjin@tvl.su>
Autosubmit: flokli <flokli@flokli.de>
Tested-by: BuildkiteCI
We want the address that the Rc is pointing to, not the address of the
Rc.
Change-Id: I8eba21677f242bbe4166c74d4aa4269c316076e3
Reviewed-on: https://cl.tvl.fyi/c/depot/+/8045
Reviewed-by: flokli <flokli@flokli.de>
Autosubmit: tazjin <tazjin@tvl.su>
Tested-by: BuildkiteCI
This CL address clippy warning which expects to
use `writeln` instead of `write` for strings with
new line.
Change-Id: Ia72a07502c60cfd489ecf1e3833b9d42d44a8b17
Signed-off-by: Aaqa Ishtyaq <aaqaishtyaq@gmail.com>
Reviewed-on: https://cl.tvl.fyi/c/depot/+/8030
Tested-by: BuildkiteCI
Reviewed-by: tazjin <tazjin@tvl.su>
This CL address clippy warning about finding the zero
length of something using `is_empty()` instead of `len() == 0`.
Change-Id: I2b36c7c7b65b733609fc0dcd33be06f9d772bc9b
Signed-off-by: Aaqa Ishtyaq <aaqaishtyaq@gmail.com>
Reviewed-on: https://cl.tvl.fyi/c/depot/+/8029
Tested-by: BuildkiteCI
Reviewed-by: tazjin <tazjin@tvl.su>
This branch was missing, and an assumption elsewhere just executed the
returned (broken) bytecode.
This fixes b/253.
Change-Id: I015023ba921bc08ea03882167f1f560feca25e50
Reviewed-on: https://cl.tvl.fyi/c/depot/+/8090
Tested-by: BuildkiteCI
Reviewed-by: flokli <flokli@flokli.de>
Autosubmit: tazjin <tazjin@tvl.su>
These should be inspectable by callers.
Change-Id: Ia9ef871aa63958d06066aaea61b2aecbd217369b
Reviewed-on: https://cl.tvl.fyi/c/depot/+/8089
Autosubmit: tazjin <tazjin@tvl.su>
Tested-by: BuildkiteCI
Reviewed-by: flokli <flokli@flokli.de>
Nix accepts SRI hashes that are missing their padding characters
in base64, as seen in
7e49471316/pkgs/development/libraries/kerberos/krb5.nix .
It only seems to work in the SRI case, not with `sha256` being set to a
(nopad) base64 string.
Add regression tests for this, and document why we don't want to support
*additional* characters afterwards.
Reported in https://b.tvl.fyi/issues/252
Change-Id: I9ffc2b417501b426ced1894a9cbf95ff5f0e5159
Reviewed-on: https://cl.tvl.fyi/c/depot/+/8037
Reviewed-by: Alyssa Ross <hi@alyssa.is>
Tested-by: BuildkiteCI
Further emphasize Read() can be used to ask for blobs OR chunks, and
that clients usually want to stat and then request (smaller) chunks,
rather than reading whole blobs.
Also clarify that the chunking used to send BlobChunks over has nothing
to do with the chunk sizes communicated in a Stat() request.
Change-Id: Ia615d190aae570611de2655b11342a14d0b75976
Reviewed-on: https://cl.tvl.fyi/c/depot/+/8028
Reviewed-by: tazjin <tazjin@tvl.su>
Tested-by: BuildkiteCI
Plain paths like `foo/bar.nix` are also allowed, so we can not
determine this based on the prefix.
The upstream PR that is referenced in a comment here has a
significantly different interface than we expected, so I'm not
touching that comment yet in this CL before I've had more time to
digest it.
Change-Id: Iea33bbb35de9c00a7d7fedf64d02253c75c1cc9e
Reviewed-on: https://cl.tvl.fyi/c/depot/+/8032
Autosubmit: tazjin <tazjin@tvl.su>
Reviewed-by: Alyssa Ross <hi@alyssa.is>
Reviewed-by: flokli <flokli@flokli.de>
Tested-by: BuildkiteCI
Our fork fixes a small bug (https://github.com/jneem/wu-manber/pull/1)
but it's not clear whether upstream will accept patches, so for now
lets point this directly at our fork.
Change-Id: Iccdcedae3e9a8b783241431787c952561d032694
Reviewed-on: https://cl.tvl.fyi/c/depot/+/8031
Reviewed-by: tazjin <tazjin@tvl.su>
Autosubmit: tazjin <tazjin@tvl.su>
Tested-by: BuildkiteCI
We only use Rc in `impl EvalIO for StdIO`, which is only included when
building with the "impure" feature.
Change-Id: Id29d647c899cbfcdda11abfb9fabd5aa7e24299f
Reviewed-on: https://cl.tvl.fyi/c/depot/+/8025
Autosubmit: flokli <flokli@flokli.de>
Reviewed-by: tazjin <tazjin@tvl.su>
Tested-by: BuildkiteCI
This reduces the size of `Builtin` from 88 (!) bytes to 8, and as the
largest variant of `Value`, the size of that type from 96 to 64.
The next largest type is NixList, clocking in at 64 bytes.
This has noticeable performance impact. In an implementation without
disk I/O, evaluating nixpkgs.stdenv looks like this:
Benchmark 1: tvix -E '(import <nixpkgs> {}).stdenv.drvPath'
Time (mean ± σ): 1.151 s ± 0.003 s [User: 1.041 s, System: 0.109 s]
Range (min … max): 1.147 s … 1.155 s 10 runs
After this change, it looks like this:
Benchmark 1: tvix -E '(import <nixpkgs> {}).stdenv.drvPath'
Time (mean ± σ): 1.046 s ± 0.004 s [User: 0.954 s, System: 0.092 s]
Range (min … max): 1.041 s … 1.053 s 10 runs
Change-Id: I5ab7cc02a9a450c0227daf1f1f72966358311ebb
Reviewed-on: https://cl.tvl.fyi/c/depot/+/8027
Tested-by: BuildkiteCI
Reviewed-by: flokli <flokli@flokli.de>
When resolving a select expression (`attrs.name` or `attrs.name or
default`), if the set compiles to a constant attribute set (as is most
notably the case with `builtins`) we can backtrack and replace that
attribute set directly with the compiled value.
For something like `builtins.length`, this will directly emit an
`OpConstant` that leaves the `length` builtin on the stack.
Change-Id: I639654e065a06e8cfcbcacb528c6da7ec9e513ee
Reviewed-on: https://cl.tvl.fyi/c/depot/+/7957
Tested-by: BuildkiteCI
Reviewed-by: flokli <flokli@flokli.de>
This was reflowed in a funny way. Move the whole command into its own
line, to prevent it from happening.
Change-Id: Ifba4daf418487ca4c32586820071930d29020f42
Reviewed-on: https://cl.tvl.fyi/c/depot/+/8026
Autosubmit: flokli <flokli@flokli.de>
Tested-by: BuildkiteCI
Reviewed-by: tazjin <tazjin@tvl.su>
This fixes a very complicated bug (b/246). Evaluation
progresses *much* further after this, leading to several less
complicated bugs likely being uncovered by this
What was the problem?
=====================
Previously, when evaluating a thunk, we had a code path that looked
like this:
match *thunk {
ThunkRepr::Evaluated(Value::Thunk(ref inner_thunk)) => {
let inner_repr = inner_thunk.0.borrow().clone();
drop(thunk);
self.0.replace(inner_repr);
}
/* ... */
}
This code path created a copy of the inner `ThunkRepr` of a nested
thunk, and moved that copy into the `ThunkRepr` of the parent.
The effect of this was that the original `ThunkRepr` (unforced!) lived
on in the original thunk, without the memoization of the subsequent
forcing applying to it.
This had the result that Tvix would repeatedly evaluate these thunks
without ever memoizing them, if they occured repeatedly as shared
inner thunks. Most notably, this would *always* occur when
builtins.import was used.
What's the solution?
====================
I have completely rewritten `Thunk::force_trampoline_self` to make all
flows that can occur in it explicit. I have also removed the outer
loop inside of that function, and resorted to more use of trampolining
instead.
The function is now well-commented and it should be possible to read
it from top-to-bottom and get a general sense of what is going on,
though the trampolining itself (which is implemented in the VM) needs
to be at least partially understood for this.
What's the new problem(s)?
==========================
One new (known) problem is that we have to construct `Error` instances
in all error types here, but we do not have spans available in some
thunk-related situations. Due to b/238 we cannot ask the VM for an
arbitrary span from the callsite leading to the force. This means that
there are now code paths where, under certain conditions, causing an
evaluation error during thunk forcing will panic.
To fix this we will need to investigate and fix b/238, and/or add a
span tracking mechanism to thunks themselves.
What other impacts does this have?
==================================
With this commit, eval of nixpkgs mostly succeeds (things like stdenv
evaluate to the same hashes for us and C++ Nix, meaning we now
construct identical derivations without eval breaking).
Due to this we progress much further into nixpkgs, which lets us
uncover more additional bugs. For example, after this commit we can
quickly see that cl/7949 introduces some kind of behavioural issue and
should not be merged as-is (this was not apparent before).
Additionally, tvix-eval is now seemingly very fast. When doing
performance analysis of a nixpkgs eval, we now mostly see the code
path for shelling out to C++ Nix to add things to the store in there.
We still need those code paths, so we can not (yet) do a performance
analysis beyond that.
Change-Id: I738525bad8bc5ede5d8c737f023b14b8f4160612
Reviewed-on: https://cl.tvl.fyi/c/depot/+/8012
Tested-by: BuildkiteCI
Reviewed-by: flokli <flokli@flokli.de>
We need to distinguish explicitly between the paths used for the
scanner, and the paths that populate the derivation inputs. The full
paths must be accessible from the result of the refscanner to populate
drv fields correctly.
This was previously hidden by debug changes that masked actual IO
operations with no-ops.
Change-Id: I037af6e6bbe2b573034d695f8779bee1b56bc125
Reviewed-on: https://cl.tvl.fyi/c/depot/+/8022
Reviewed-by: flokli <flokli@flokli.de>
Tested-by: BuildkiteCI
Creates a cache of imported literal files (e.g.
`./default-builder.sh`) which avoids shelling out to Nix for each
instance of the same file.
Note that a better way to tackle this is to create memoizable thunks
for these expressions in the compiler, but we are lacking a little bit
of infrastructure for that at the moment.
Change-Id: Ibc062b20d81e97dd3986e734d225a744e1779fe7
Reviewed-on: https://cl.tvl.fyi/c/depot/+/8015
Tested-by: BuildkiteCI
Reviewed-by: flokli <flokli@flokli.de>
Switch out the string-scanning algorithm used in the reference scanner.
The construction of aho-corasick automata made up the vast majority of
runtime when evaluating nixpkgs previously. While the actual scanning
with a constructed automaton is relatively fast, we almost never scan
for the same set of strings twice and the cost is not worth it.
An algorithm that better matches our needs is the Wu-Manber multiple
string match algorithm, which works efficiently on *long* and *random*
strings of the *same length*, which describes store paths (up to their
hash component).
This switches the refscanner crate to a Rust implementation[0][1] of
this algorithm.
This has several implications:
1. This crate does not provide a way to scan streams. I'm not sure if
this is an inherent problem with the algorithm (probably not, but
it would need buffering). Either way, related functions and
tests (which were actually unused) have been removed.
2. All strings need to be of the same length. For this reason, we
truncate the known paths after their hash part (they are still
unique, of course).
3. Passing an empty set of matches, or a match that is shorter than
the length of a store path, causes the crate to panic. We safeguard
against this by completely skipping the refscanning if there are no
known paths (i.e. when evaluating the first derivation of an eval),
and by bailing out of scanning a string that is shorter than a
store path.
On the upside, this reduces overall runtime to less 1/5 of what it was
before when evaluating `pkgs.stdenv.drvPath`.
[0]: Frankly, it's a random, research-grade MIT-licensed
crate that I found on Github:
https://github.com/jneem/wu-manber
[1]: We probably want to rewrite or at least fork the above crate, and
add things like a three-byte wide scanner. Evaluating large
portions of nixpkgs can easily lead to more than 65k derivations
being scanned for.
Change-Id: I08926778e1e5d5a87fc9ac26e0437aed8bbd9eb0
Reviewed-on: https://cl.tvl.fyi/c/depot/+/8017
Tested-by: BuildkiteCI
Reviewed-by: flokli <flokli@flokli.de>
The README was very sparse before and we've actually had people email
us (as it says to contact us) just to ask what Tvix *is*. This should
answer some questions!
Change-Id: I0f248cb060eccfe086468afed1d648652b35dfd1
Reviewed-on: https://cl.tvl.fyi/c/depot/+/8018
Tested-by: BuildkiteCI
Autosubmit: tazjin <tazjin@tvl.su>
Reviewed-by: flokli <flokli@flokli.de>
... not just a TODO.
Most use-cases of unsafeDiscardStringContext are for cases where a
string is processed in some ways and no longer contains a "physical"
reference, but still has its context attached in C++ Nix.
We don't need to do this. This does diverge in behaviour in use-cases
related to build scheduling, but that whole behaviour will be
different in Tvix.
Change-Id: I4056d4c09f62d44d6bd52b791db03fe5556672b5
Reviewed-on: https://cl.tvl.fyi/c/depot/+/8016
Reviewed-by: flokli <flokli@flokli.de>
Autosubmit: tazjin <tazjin@tvl.su>
Tested-by: BuildkiteCI
... instead of a BTreeMap, as we do not need ordering guarantees here.
HashMaps are noticeably faster here (especially as we've been sorting
essentially random data!).
Change-Id: Ie92d74286df9f763c04c9b226ef1066ee8484c13
Reviewed-on: https://cl.tvl.fyi/c/depot/+/8014
Reviewed-by: flokli <flokli@flokli.de>
Tested-by: BuildkiteCI
Autosubmit: tazjin <tazjin@tvl.su>
If the tvix view is cloned through josh, you don't use mg, but a
`shell.nix` is provided.
Also, add the `git clone` command, so people browsing tvix source code
in the browser know where to clone from.
Change-Id: I18483d6a52953f9f4eafd1533ea69afb0e329b04
Reviewed-on: https://cl.tvl.fyi/c/depot/+/8001
Reviewed-by: tazjin <tazjin@tvl.su>
Tested-by: BuildkiteCI
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
This module takes care of parsing various hashes and algorithms.
It will get used to modify derivation output hashes in the next CL.
Change-Id: Idc07c401dbb7510f49883ac02b8379b9a5d930c7
Reviewed-on: https://cl.tvl.fyi/c/depot/+/7990
Reviewed-by: tazjin <tazjin@tvl.su>
Tested-by: BuildkiteCI
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>
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>
This doesn't require any other corresponding handling *yet*, as the
actual replacements happen in the builder logic (which we delegate to
cppnix at the moment).
Change-Id: I034147c933f05ae427c7a8794647132d108d0ede
Reviewed-on: https://cl.tvl.fyi/c/depot/+/7972
Autosubmit: tazjin <tazjin@tvl.su>
Tested-by: BuildkiteCI
Reviewed-by: flokli <flokli@flokli.de>
This is an example, which uses the debug trait to print all field
values.
Silence the compiler warning about unused fields.
Change-Id: I5f1216c77819003302e83ba1af1ff13c924f3b38
Reviewed-on: https://cl.tvl.fyi/c/depot/+/7971
Reviewed-by: tazjin <tazjin@tvl.su>
Tested-by: BuildkiteCI
Autosubmit: flokli <flokli@flokli.de>
This adds a fake argument name to builtins.toXML which allows toXML to
serialise any value instead of panicking on functions. We do still
have to fix the value itself, eventually, though.
Change-Id: I2e330ecddcd80442b4fac5eced64431ac86123ba
Reviewed-on: https://cl.tvl.fyi/c/depot/+/7962
Autosubmit: tazjin <tazjin@tvl.su>
Tested-by: BuildkiteCI
Reviewed-by: flokli <flokli@flokli.de>
This adds a function that consumes a [proto::node::Node] pointing to the
root of a (store) path, and writes the contents in NAR serialization to
the passed [std::io::Write].
We need this in various places:
- tvix-store's calculate_nar() RPC method needs to render a NAR stream
to get the nar hash, which is necessary to give things imported in
the store a "NAR-based" store path.
- communication with (remote) Nix (via daemon protocol) needs a NAR
representation.
- Things like nar-bridge, exposing a NAR/NARInfo HTTP interface need a
NAR representation.
Change-Id: I7fb2e0bf01814a1c09094c0e35394d9d6b3e43b6
Reviewed-on: https://cl.tvl.fyi/c/depot/+/7956
Reviewed-by: tazjin <tazjin@tvl.su>
Tested-by: BuildkiteCI
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>
This provides a `Directory.nodes()` function, returning an iterator over
all three node types in an ordered fashion.
Change-Id: Ib98696c03a9db8b6c613d6e2bf5587c1ae35133f
Reviewed-on: https://cl.tvl.fyi/c/depot/+/7955
Reviewed-by: tazjin <tazjin@tvl.su>
Tested-by: BuildkiteCI
Make the trait public, so consumers can use it.
Also, implement it for node::Node, so we can later use this to access
the name from all three if we don't care about the enum type.
Change-Id: Iae530a16b705493645e61947852c03273876cc55
Reviewed-on: https://cl.tvl.fyi/c/depot/+/7963
Reviewed-by: tazjin <tazjin@tvl.su>
Tested-by: BuildkiteCI
Move nixbase32 and store_path into this.
This allows //tvix/cli to not pull in //tvix/store for now.
Change-Id: Id3a32867205d95794bc0d33b21d4cb3d9bafd02a
Reviewed-on: https://cl.tvl.fyi/c/depot/+/7964
Tested-by: BuildkiteCI
Reviewed-by: tazjin <tazjin@tvl.su>
We only do logic here if algo and hash_mode are Some(_)
(and there's an `out` output).
The fact we don't do anything in all in other cases is a bit hidden at
the bottom. Use if let for the destructuring, and drop the other case.
Change-Id: Icc0e38e62947d52d48ef610f754749737977fca9
Reviewed-on: https://cl.tvl.fyi/c/depot/+/7966
Reviewed-by: tazjin <tazjin@tvl.su>
Tested-by: BuildkiteCI
This shows how people can use tvix_serde to deserialise configuration
structs for their programs from Nix code.
Change-Id: I71bf4e03dce19dddafe67dd729b4e4b10719a739
Reviewed-on: https://cl.tvl.fyi/c/depot/+/7945
Reviewed-by: flokli <flokli@flokli.de>
Tested-by: BuildkiteCI
Formals can depend on each other when using another formal as a
default value.
This test ensures that the compiler's declaration and initialisation
order of formals is consistent with what actually happens in the VM.
Change-Id: Ibdabe262554e8066d67fac1ebc3b5a48ef626e18
Reviewed-on: https://cl.tvl.fyi/c/depot/+/7948
Reviewed-by: sterni <sternenseemann@systemli.org>
Tested-by: BuildkiteCI
Reviewed-by: flokli <flokli@flokli.de>
This helper function only was created because
populate_output_configuration was hard to test before cl/7939.
With that out of the way, we can pull it in.
Change-Id: I64b36c0eb34343290a8d84a03b0d29392a821fc7
Reviewed-on: https://cl.tvl.fyi/c/depot/+/7961
Autosubmit: flokli <flokli@flokli.de>
Tested-by: BuildkiteCI
Reviewed-by: tazjin <tazjin@tvl.su>
Replace our data_encoding usage with the implementation taken from
https://github.com/nix-community/go-nix/tree/master/pkg/nixbase32
Also uncomment some of the unit tests, and add a regression test for a
NIXBASE32.encode with a 32 bytes sequence.
The previous implementation of NIXBASE32.encode is wrong in that case:
```
❯ nix hash to-base32 sha256-s6JN6XqP28g1uYMxaVAQMLiXcDG8tUs7OsE3QPhGqzA=
0c5b8vw40dy178xlpddw65q9gf1h2186jcc3p4swinwggbllv8mk
❯ echo -n s6JN6XqP28g1uYMxaVAQMLiXcDG8tUs7OsE3QPhGqzA= | base64 -d | hexdump -C
00000000 b3 a2 4d e9 7a 8f db c8 35 b9 83 31 69 50 10 30 |..M.z...5..1iP.0|
00000010 b8 97 70 31 bc b5 4b 3b 3a c1 37 40 f8 46 ab 30 |..p1..K;:.7@.F.0|
00000020
```
Change-Id: I0468b62bbbab390f8d7d3812e657e5d59dceed59
Reviewed-on: https://cl.tvl.fyi/c/depot/+/7934
Tested-by: BuildkiteCI
Autosubmit: flokli <flokli@flokli.de>
Reviewed-by: Adam Joseph <adam@westernsemico.com>
Reviewed-by: tazjin <tazjin@tvl.su>
There's gonna be more tests coming, let's move them into a separate file
everything Directory-related into a separate module.
Change-Id: I78a0f263925528907a22724b028f75cce644b329
Reviewed-on: https://cl.tvl.fyi/c/depot/+/7954
Reviewed-by: tazjin <tazjin@tvl.su>
Tested-by: BuildkiteCI
Also add a `NamedNode` trait. We'll later use this to access names from
all three individually.
Change-Id: Icb5afd6fa5a0d834e9908294382de9892a5a6440
Reviewed-on: https://cl.tvl.fyi/c/depot/+/7953
Tested-by: BuildkiteCI
Reviewed-by: tazjin <tazjin@tvl.su>
This is repetitive and error prone (e.g. switching around
to_string/as_str has drastic consequences) due to the ToString
overloads.
Change-Id: I9b16a2e0e05e4c21e83f43e9f603746eb42e53f7
Reviewed-on: https://cl.tvl.fyi/c/depot/+/7947
Reviewed-by: flokli <flokli@flokli.de>
Tested-by: BuildkiteCI
Autosubmit: tazjin <tazjin@tvl.su>
This is much less code, and makes it much easier to read.
Change-Id: I9028f226105f905c2cc2cabd33907ff493e26225
Reviewed-on: https://cl.tvl.fyi/c/depot/+/7938
Reviewed-by: tazjin <tazjin@tvl.su>
Tested-by: BuildkiteCI
Autosubmit: flokli <flokli@flokli.de>
Instead of being called with `md5`, `sha1`, `sha256` or `sha512`,
`fetchurl.nix` (from corepkgs / `<nix`) can also be called with a `hash`
attribute, being an SRI hash.
In that case, `builtin.derivation` is called with `outputHashAlgo` being
an empty string, and `outputHash` being an SRI hash string.
In other cases, an SRI hash is passed as outputHash, but outputHashAlgo
is set too.
Nix does modify these values in (single, fixed) output specification it
serializes to ATerm, but keeps it unharmed in `env`.
Move this into a construct_output_hash helper function, that can be
tested better in isolation.
Change-Id: Id9d716a119664c44ea7747540399966752e20187
Reviewed-on: https://cl.tvl.fyi/c/depot/+/7933
Reviewed-by: tazjin <tazjin@tvl.su>
Autosubmit: flokli <flokli@flokli.de>
Tested-by: BuildkiteCI
Allows easier to use these errors in test cases.
Change-Id: I8abee3b522909ed4aa4b066499cc48eececbc036
Reviewed-on: https://cl.tvl.fyi/c/depot/+/7937
Autosubmit: flokli <flokli@flokli.de>
Reviewed-by: tazjin <tazjin@tvl.su>
Tested-by: BuildkiteCI
This adds an implementation of this builtin which correctly calculates
paths, but does not actually write anything to the store or verify
references.
Change-Id: Ie9764cbc1d13a73d8dc9350910304e2b7cad3fe8
Reviewed-on: https://cl.tvl.fyi/c/depot/+/7910
Tested-by: BuildkiteCI
Reviewed-by: flokli <flokli@flokli.de>
This uses the actual upstream Nix code for
`builtins.derivation` (which is not a primop in C++ Nix) to implement
`builtins.derivation` as a wrapper around `builtins.derivationStrict`.
We're doing it this way to ensure that our thunking logic is correct.
An initial Rust-native rewrite (see e.g. cl/7363) is pretty difficult
to debug while there are still other issues to root out, but
eventually we might want to turn this into native code.
Change-Id: I5845e18073e103b8670e40648bd7fd9b511058e0
Reviewed-on: https://cl.tvl.fyi/c/depot/+/7902
Tested-by: BuildkiteCI
Reviewed-by: flokli <flokli@flokli.de>
Implements the logic for converting an evaluator value supplied as
arguments to builtins.derivationStrict into an actual,
fully-functional derivation struct.
This skips the implementation of structuredAttrs, which are left for a
subsequent commit.
Note: We will need to port some eval tests over to CLI to test this
correct, which will be done in a separate commit later on.
Change-Id: I0db69dcf12716180de0eb0b126e3da4683712966
Reviewed-on: https://cl.tvl.fyi/c/depot/+/7756
Reviewed-by: flokli <flokli@flokli.de>
Tested-by: BuildkiteCI
Adds a helper function which handles special parameters to
`builtins.derivation` that are not just blindly passed through to the
builder environment, but populate other specific fields of the
derivation (outside of the ones handled by other, more complex helpers
from previous commits).
Change-Id: I82d1edf9af714fc4591e9071c0b83ece83be7eee
Reviewed-on: https://cl.tvl.fyi/c/depot/+/7901
Reviewed-by: flokli <flokli@flokli.de>
Tested-by: BuildkiteCI
This threads through the fields that control whether a derivation is a
fixed-output derivation or not.
Change-Id: I49739de178fed9f258291174ca1a2c15a7cf5c2a
Reviewed-on: https://cl.tvl.fyi/c/depot/+/7900
Tested-by: BuildkiteCI
Reviewed-by: flokli <flokli@flokli.de>
This adds a helper function which takes the output of the reference
scanner used on derivation inputs and populates the `input_sources`
and `input_derivations` field of the derivation accordingly.
Note that we have a divergence from C++ Nix here, as we do not
populate the entire FS closure of a literally referred derivation (and
our standing theory is that this is unnecessary for nixpkgs).
Change-Id: Id0f605dd8c0a82973c56605c2b8f478fc17777d6
Reviewed-on: https://cl.tvl.fyi/c/depot/+/7899
Tested-by: BuildkiteCI
Reviewed-by: flokli <flokli@flokli.de>
Adds a small helper function which uses a Nix value supplied to
`builtins.derivation{Strict}` to populate the `outputs` field of the
`Derivation` struct.
Change-Id: Iccc7a4f293b3d913140aed576a573a8992241e46
Reviewed-on: https://cl.tvl.fyi/c/depot/+/7898
Reviewed-by: flokli <flokli@flokli.de>
Tested-by: BuildkiteCI
We only stripped one of the two uses of this string, leading to
extraneous newlines in the refscanner.
Change-Id: I25d9119be082c487352f0cf66b97ecdcc3e1de06
Reviewed-on: https://cl.tvl.fyi/c/depot/+/7932
Reviewed-by: flokli <flokli@flokli.de>
Tested-by: BuildkiteCI
Main one is the its-it's mistake in the last paragraph, the rest was
suggested by LanguageTool.
Change-Id: If1b87a11f480452f312fc2759be7ded782d0a522
Reviewed-on: https://cl.tvl.fyi/c/depot/+/7930
Reviewed-by: flokli <flokli@flokli.de>
Autosubmit: sterni <sternenseemann@systemli.org>
Tested-by: BuildkiteCI
While it is in the given example, i.e. for integer addition, to claim
that they are equivalent is a bit misleading: builtins.add is less
overloaded than +, i.e. builtins.add "foo" "bar" will fail whereas
"foo" + "bar" performs string concatenation.
Change-Id: Ib52d530d1ab289b367565b286f06a76dd518d4fb
Reviewed-on: https://cl.tvl.fyi/c/depot/+/7929
Autosubmit: sterni <sternenseemann@systemli.org>
Reviewed-by: flokli <flokli@flokli.de>
Tested-by: BuildkiteCI
This keeps the actual TotalDisplay implementation readable, as this
float formatting code suddenly made up the majority of its implementation.
Change-Id: I2c0d00e4a691e0b8ffbc72680f680e16feef4bee
Reviewed-on: https://cl.tvl.fyi/c/depot/+/7925
Reviewed-by: flokli <flokli@flokli.de>
Autosubmit: tazjin <tazjin@tvl.su>
Tested-by: BuildkiteCI
This allows parsing TOML from Tvix. We can enable the eval-okay-fromTOML
testcase from nix_tests. It uses the `toml` crate, and the serde
integration it brings with it.
Change-Id: Ic6f95aacf2aeb890116629b409752deac49dd655
Reviewed-on: https://cl.tvl.fyi/c/depot/+/7920
Autosubmit: flokli <flokli@flokli.de>
Reviewed-by: tazjin <tazjin@tvl.su>
Tested-by: BuildkiteCI
Apparently our naive implementation of float formatting, which simply
used {:.5}, and trimmed trailing "0" strings not sufficient.
It wrongly trimmed numbers with zeroes but no decimal point, like
`10000` got trimmed to `1`.
Nix uses `std::to_string` on the double, which according to
https://en.cppreference.com/w/cpp/string/basic_string/to_string
is equivalent to `std::sprintf(buf, "%f", value)`.
https://en.cppreference.com/w/cpp/io/c/fprintf mentions this is treated
like this:
> Precision specifies the exact number of digits to appear after
> the decimal point character. The default precision is 6. In the
> alternative implementation decimal point character is written even if
> no digits follow it. For infinity and not-a-number conversion style
> see notes.
This doesn't seem to be the case though, and Nix uses scientific
notation in some cases.
There's a whole bunch of strategies to determine which is a more compact
notation, and which notation should be used for a given number.
https://github.com/rust-lang/rust/issues/24556 provides some pointers
into various rabbit holes for those interested.
This gist seems to be that currently a different formatting is not
exposed in rust directly, at least not for public consumption.
There is the
[lexical-core](https://github.com/Alexhuszagh/rust-lexical) crate
though, which provides a way to format floats with various strategies
and formats.
Change our implementation of `TotalDisplay` for the `Value::Float` case
to use that. We still need to do some post-processing, because Nix
always adds the sign in scientific notation (and there's no way to
configure lexical-core to do that), and lexical-core in some cases keeps
the trailing zeros.
Even with all that in place, there as a difference in `eval-okay-
fromjson.nix` (from tvix-tests), which I couldn't get to work. I updated
the fixture to a less problematic number.
With this, the testsuite passes again, and does for the upcoming CL
introducing builtins.fromTOML, and enabling the nix testsuite bits for
it, too.
Change-Id: Ie6fba5619e1d9fd7ce669a51594658b029057acc
Reviewed-on: https://cl.tvl.fyi/c/depot/+/7922
Tested-by: BuildkiteCI
Autosubmit: flokli <flokli@flokli.de>
Reviewed-by: tazjin <tazjin@tvl.su>
Two main reasons:
1. Traversing the structure to do this optimisation is
actually *slower* than not optimising it.
2. There are literally hundreds of thousands of incidences of this in
nixpkgs, and with some of the weird code there some of
these (functionally) useless parens are actually required for
readability reasons.
Change-Id: I1044b1c5f9fe20df4b6085851fc3b191277c65dc
Reviewed-on: https://cl.tvl.fyi/c/depot/+/7917
Autosubmit: tazjin <tazjin@tvl.su>
Tested-by: BuildkiteCI
Reviewed-by: flokli <flokli@flokli.de>
call_value in the VM expects the callable to be forced when calling
it, which was not the case for functors.
Change-Id: Id55a2fe32a9573be42aef8669e268df519a989cd
Reviewed-on: https://cl.tvl.fyi/c/depot/+/7909
Tested-by: BuildkiteCI
Reviewed-by: sterni <sternenseemann@systemli.org>
This makes it easier to pass owned strings if that's what we have.
Change-Id: Ia7351ff2681292d16534ec50fe60b926b683bb9a
Reviewed-on: https://cl.tvl.fyi/c/depot/+/7908
Reviewed-by: flokli <flokli@flokli.de>
Tested-by: BuildkiteCI
This is used in few enough places to just inline it. It felt a bit alien
in the ATerm construction aswell.
write.rs now pleasantly only includes tokens that occur in the ATerm
representation.
Change-Id: I524f8d6c1ce9057ff7fd16c6c3efd98467040a44
Reviewed-on: https://cl.tvl.fyi/c/depot/+/7911
Reviewed-by: tazjin <tazjin@tvl.su>
Tested-by: BuildkiteCI
All of these occurences are actually sha256 digests of some fingerprint
- which means there's not a lot of need to do the hashing outside.
Instead of passing in a digest, keep the sha256 hasher in the function,
and pass in a fingerprint.
This makes it much easier to construct fingerprints using format!() in
all consumers, because we need don't need to juggle with the hasher
anymore.
Change-Id: I2dc3af2cab6cf06f55ae6cbd9a8be95faf2a07b6
Reviewed-on: https://cl.tvl.fyi/c/depot/+/7907
Tested-by: BuildkiteCI
Reviewed-by: tazjin <tazjin@tvl.su>
This allows the calculation of a store path for a plain string that
potentially contains references. These paths are used for
`builtins.toFile` (and potentially other features of C++ Nix).
Change-Id: Ic507c7f264f362b5e6e628255869e5a4fbe4d788
Reviewed-on: https://cl.tvl.fyi/c/depot/+/7906
Tested-by: BuildkiteCI
Reviewed-by: flokli <flokli@flokli.de>
Fixes some module comments and embeds the `compress_hash` function in
the `derivation` module, as it was not used outside of this module
anyways.
Change-Id: I6c5c92b3f0c03c2cdcbcfc2f813909a968c4d44c
Reviewed-on: https://cl.tvl.fyi/c/depot/+/7905
Tested-by: BuildkiteCI
Reviewed-by: flokli <flokli@flokli.de>
This makes it possible to inject builtins into the builtin set that
are written in Nix code, and which at runtime are represented by a
thunk that will compile them the first time they are used.
Change-Id: Ia632367328f66fb2f26cb64ae464f8f3dc9c6d30
Reviewed-on: https://cl.tvl.fyi/c/depot/+/7891
Tested-by: BuildkiteCI
Reviewed-by: flokli <flokli@flokli.de>
This is used for content-defined chunking.
Change-Id: I10345372cecb9a643cc51ca45aa5b77d2a05198a
Reviewed-on: https://cl.tvl.fyi/c/depot/+/7889
Tested-by: BuildkiteCI
Reviewed-by: tazjin <tazjin@tvl.su>
I omitted the link to the commit history. Most people see this README
through some git interface anyways, so it felt a bit redundant.
Change-Id: I92cf6d08b83ef680fe37df29d3d546cad020955a
Reviewed-on: https://cl.tvl.fyi/c/depot/+/7888
Reviewed-by: tazjin <tazjin@tvl.su>
Reviewed-by: sterni <sternenseemann@systemli.org>
Tested-by: BuildkiteCI
Autosubmit: flokli <flokli@flokli.de>
While moving the CLI out of the evaluator, we forgot to update the
README in //tvix/eval. Move this up to //tvix, so people know where
to start.
Keep the instructions on how to build only `//tvix/eval` in `//tvix/
eval/README.md`.
Change-Id: Ie2755e8b5a0056225dbf3a0ee040f70f7f6a1f27
Reviewed-on: https://cl.tvl.fyi/c/depot/+/7887
Reviewed-by: sterni <sternenseemann@systemli.org>
Autosubmit: flokli <flokli@flokli.de>
Tested-by: BuildkiteCI
Reviewed-by: tazjin <tazjin@tvl.su>
This calls out to Directory::validate() for all received Directory
messages, and also makes sure the sizes we refer a Directory message as
matches the sizes that have been calculated.
Change-Id: I316f9191d5872ee4ba6d78b9a4326f069b22fa63
Reviewed-on: https://cl.tvl.fyi/c/depot/+/7882
Tested-by: BuildkiteCI
Reviewed-by: tazjin <tazjin@tvl.su>
We can omit sending Directory messages to clients that have already been
sent in the same stream.
We can also omit storing a Directory message if we already have it -
they're content-addressed anyways.
Change-Id: Iba44565e07157a83a033177a2ffbdddced64ba5c
Reviewed-on: https://cl.tvl.fyi/c/depot/+/7881
Reviewed-by: tazjin <tazjin@tvl.su>
Tested-by: BuildkiteCI
The codebase contains a lot of complexity and odd roundabout
handling for shadowing globals. I'm pretty sure none of this is
necessary, and all of it disappears if you simply make the globals
part of the ordinary identifier resolution chain, with their own
scope up above the root scope. Then the ordinary shadowing routines
do the right thing, and no special cases or new terminology are
required.
This commit does that.
Note by tazjin: This commit was originally abandoned when Adam decided
not to take away reviewer bandwidth for this at the time (eval was
still in a much earlier stage). As we've recently done some
significant refactoring of globals initialisation this came up again,
and it seems we can easily cover the use-cases of the poison tracking
in other ways now, so I've rebased, updated and resurrected the CL.
Co-Authored-By: Vincent Ambo <tazjin@tvl.su>
Signed-off-by: Adam Joseph <adam@westernsemico.com>
Change-Id: Ib3309a47a7b31fa5bf10466bade0d876b76ae462
Reviewed-on: https://cl.tvl.fyi/c/depot/+/7089
Reviewed-by: tazjin <tazjin@tvl.su>
Tested-by: BuildkiteCI
Reviewed-by: flokli <flokli@flokli.de>
Import more things, and use expect_err to unpack the response.
Change-Id: Ia319dd4d126b8d0e1df585234710d825a33a0002
Reviewed-on: https://cl.tvl.fyi/c/depot/+/7868
Tested-by: BuildkiteCI
Reviewed-by: tazjin <tazjin@tvl.su>
This forces users to pass the fully constructed set of globals to the
VM, making it harder to accidentally "lose" the set while weak
references to it still exist.
This doesn't modify any functionality, but is laying the foundation
for simplifying some of the builtins behaviour that has grown more
complex again.
Change-Id: I5120f97861c65dc46d90b8a4e2c92ad32cc53e03
Reviewed-on: https://cl.tvl.fyi/c/depot/+/7877
Autosubmit: tazjin <tazjin@tvl.su>
Tested-by: BuildkiteCI
Reviewed-by: flokli <flokli@flokli.de>
These will be threaded through to eval through the new `TvixError`
variant.
Change-Id: Ia0d3f8710dcf26bb95015cd2a6a2b2911f06343f
Reviewed-on: https://cl.tvl.fyi/c/depot/+/7842
Reviewed-by: flokli <flokli@flokli.de>
Tested-by: BuildkiteCI
This adds a feature to the `#[builtins]` macro which lets users
specify an additional state type to (optionally) thread through to
builtins when constructing them.
This makes it possible for builtins-macro users to pass external state
handles (specifically, in our case, known path tracking) into a set of
builtins.
Change-Id: I3ade20d333fc3ba90a80822cdfa5f87a9cfada75
Reviewed-on: https://cl.tvl.fyi/c/depot/+/7840
Reviewed-by: flokli <flokli@flokli.de>
Tested-by: BuildkiteCI
All invocations of the builtin macro had to previously filter through
the `builtin_tuple` function, but it's more sensible to directly
return these from the macro.
Change-Id: I45600ba84d56c9528d3e92570461c319eea595ce
Reviewed-on: https://cl.tvl.fyi/c/depot/+/7825
Tested-by: BuildkiteCI
Reviewed-by: flokli <flokli@flokli.de>
This makes it possible for users to add additional context to an
error, which will then be rendered as an additional secondary span in
the formatted error output.
We should strive to do this basically anywhere errors are raised that
can occur multiple times, *especially* during type casts. This was
triggered by me debugging a type cast error attached to a fairly
large-ish span (a builtin invocation).
Change-Id: I51be41fabee00cf04de973935daf34fe6424e76f
Reviewed-on: https://cl.tvl.fyi/c/depot/+/7849
Tested-by: BuildkiteCI
Reviewed-by: flokli <flokli@flokli.de>
This allows calling validate() on a derivation that doesn't have its
output paths already calculated yet. It allows offloading some of the
error checking in builtins.derivation* to be offloaded to that function.
Change-Id: Ib4aeadc0eb6583ef8cd765f33e9a9ec32be62729
Reviewed-on: https://cl.tvl.fyi/c/depot/+/7848
Reviewed-by: tazjin <tazjin@tvl.su>
Autosubmit: flokli <flokli@flokli.de>
Tested-by: BuildkiteCI
This uses the exposed StorePath::validate_name method to check for other
invalid output names (for which it would not be possible to construct a
store path of).
Change-Id: Ia3f65e19a07ef164f9f64013a5f37cbac99eb8e0
Reviewed-on: https://cl.tvl.fyi/c/depot/+/7855
Reviewed-by: tazjin <tazjin@tvl.su>
Tested-by: BuildkiteCI
This is now used in more than just validate().
Change-Id: I69c3ad6cb5f3ad60a636fe2ea05d432aebe8e53b
Reviewed-on: https://cl.tvl.fyi/c/depot/+/7851
Reviewed-by: tazjin <tazjin@tvl.su>
Tested-by: BuildkiteCI
`drv` is an invalid output name too, as this would cause a
`builtins.derivation` call to return an attrset with a `drvPath` key
(which already exists) and has a different meaning.
Also handle errors during store path construction, and return our own
error type, instead of the ParseStorePathError.
Change-Id: Ib7952dde1d5cf18a0e210928df7c57b5939b7678
Reviewed-on: https://cl.tvl.fyi/c/depot/+/7850
Tested-by: BuildkiteCI
Reviewed-by: tazjin <tazjin@tvl.su>
Autosubmit: flokli <flokli@flokli.de>
No situation should be allowed in which a path is inserted into
known_paths with different types twice, which we previously enforced
only for some path types.
Change-Id: I8cb47d4b29c0aab3c58694f8b590e131deba7043
Reviewed-on: https://cl.tvl.fyi/c/depot/+/7843
Reviewed-by: flokli <flokli@flokli.de>
Tested-by: BuildkiteCI
Instead of having a representation of suspended native thunks that
involves constructing a fake code chunk, make these thunks a
first-class part of the internal thunk representation.
The previous code was not that simple to understand, and actually
contained a critical bug which could lead to Tvix crashes. This
version fixes the particular instance of that bug, but instead
uncovers another (b/238) which can still lead to Tvix crashes.
Fixes: b/237.
Change-Id: I771d03864084d63953bdbb518fec94487481f839
Reviewed-on: https://cl.tvl.fyi/c/depot/+/7750
Reviewed-by: flokli <flokli@flokli.de>
Tested-by: BuildkiteCI
This is unnecessary, Rc already provides all the boxing we need.
Change-Id: I08cf0939c48da43f04c847526c7e5dae5336d528
Reviewed-on: https://cl.tvl.fyi/c/depot/+/7749
Tested-by: BuildkiteCI
Reviewed-by: grfn <grfn@gws.fyi>
Reviewed-by: sterni <sternenseemann@systemli.org>
This is a somewhat terrifying hack that enables us to support
`builtins.builtins`, by running a "fake compilation" inside of a
suspended native thunk that can resolve the weak pointer to the
globals.
With this implementation, the thunk at `builtins.builtins` actually
resolves to the "real" `builtins` (verified with a new test).
This is kind of ugly, and it's something users shouldn't use, but
bubbling a warning out of this is difficult at the moment due to a
little bit of trickery with how the spans in suspended native thunks
work (they don't) (see b/237, b/238)
Change-Id: I67d0e93246dd5b279c960aeda00402031aa12af3
Reviewed-on: https://cl.tvl.fyi/c/depot/+/7748
Tested-by: BuildkiteCI
Reviewed-by: flokli <flokli@flokli.de>
Replacement strings are some weird internal feature of Nix that is
required for calculating derivation hashes. We need to track these
like other paths, as they need to be re-used on builds with
dependencies on values from previous builds.
Change-Id: Ie955b3fb5ae3685cfadfbe4d06ea6b5e219590c7
Reviewed-on: https://cl.tvl.fyi/c/depot/+/7828
Reviewed-by: flokli <flokli@flokli.de>
Tested-by: BuildkiteCI
When adding things to a C++ Nix store, ensure that the path is tracked
in the tracker.
Since the mechanism for propagating the tracker instance isn't
finalised yet, I've opted to take an Rc<RefCell> parameter for it. How
exactly that ends up there is going to become clear in the next
commits, but for now it's just instantiated in main with
Default::default.
Change-Id: I90f0b44f2d4f292dedc98ff1aa39041d279b61fd
Reviewed-on: https://cl.tvl.fyi/c/depot/+/7833
Tested-by: BuildkiteCI
Reviewed-by: flokli <flokli@flokli.de>
This gets very complex very quickly otherwise, as all the construction
paths for a reference scanner and all the access patterns for the
KnownPaths structure are not yet fully understood.
Change-Id: Ibadf1f18b476695f3c286fc6896ae557760edf63
Reviewed-on: https://cl.tvl.fyi/c/depot/+/7827
Reviewed-by: flokli <flokli@flokli.de>
Tested-by: BuildkiteCI
Instead of going through Vec/BTreeMap for generating our internal
types, use the proptest strategies from imbl.
The one thing I couldn't figure out in the previous implementation is
where the ranges/sizes of generated collections came from. The
strategies in proptest use different types (Range, with an unknown
default value, and SizeRange with 0..100). I've opted to specify
0..100 directly, but we can probably make it configurable.
Change-Id: I749bc4c703fe424099240cab822b1642e5216361
Reviewed-on: https://cl.tvl.fyi/c/depot/+/7791
Autosubmit: tazjin <tazjin@tvl.su>
Tested-by: BuildkiteCI
Reviewed-by: flokli <flokli@flokli.de>
This module implements types used to track the set of known paths in
the context of an evaluation.
These are used to determine the build references of a derivation.
Change-Id: I81e15ae33632784e699128916485751613b231a3
Reviewed-on: https://cl.tvl.fyi/c/depot/+/7816
Tested-by: BuildkiteCI
Reviewed-by: flokli <flokli@flokli.de>
These need to be sorted anyways, so let's use the correct data structure for it.
Change-Id: I009c9989d7647dc1df716170f3680c981db6e4b2
Reviewed-on: https://cl.tvl.fyi/c/depot/+/7846
Autosubmit: flokli <flokli@flokli.de>
Tested-by: BuildkiteCI
Reviewed-by: tazjin <tazjin@tvl.su>
Different to the go-nix implementation, we don't have a custom "writing
mode" where output paths are omitted from output, but we simply run the
serialization with these fields unpopulated (during construction).
This means, there's no need for a custom writing mode that strips
outputs, so we can drop the comments.
Change-Id: Ic0aafd4e34e0294603490cfce2b1aef4085ff34b
Reviewed-on: https://cl.tvl.fyi/c/depot/+/7845
Tested-by: BuildkiteCI
Reviewed-by: tazjin <tazjin@tvl.su>
Autosubmit: flokli <flokli@flokli.de>
This variant is required for external builtins (which in our case
includes `derivation`) to thread through reasonable error messages.
This has some potential for improvement, but it's an improvement over
the status quo of panicking in the external builtins when no
appropriate error is available.
Change-Id: I7e4bdb0a156c7717092dde30aa4785192182dc66
Reviewed-on: https://cl.tvl.fyi/c/depot/+/7841
Reviewed-by: flokli <flokli@flokli.de>
Tested-by: BuildkiteCI
External implementors of builtins must be able to force values, which
necessitates publishing a bunch more items from the crate.
Change-Id: I8f6b8ae88156aae417dbe630a698d123d0c1c8d4
Reviewed-on: https://cl.tvl.fyi/c/depot/+/7830
Tested-by: BuildkiteCI
Reviewed-by: flokli <flokli@flokli.de>
This was put together by digging through the C++ Nix git history as
described in the second paragraph. Note that this is only based on
changes given when the language version was actually increased.
There is no guarantee that there have been no other changes inbetween
that would have warranted an increase as well.
Change-Id: I4ddee0d4ecafa1b3e5e1a867e9700d6c32e936ad
Reviewed-on: https://cl.tvl.fyi/c/depot/+/7836
Tested-by: BuildkiteCI
Autosubmit: sterni <sternenseemann@systemli.org>
Reviewed-by: tazjin <tazjin@tvl.su>
When constructing derivations inside builtins.derivationStrict, we'd
have to very frequently check whether certain outputs have already
been inserted into the derivation inputs.
Using a set type is much easier, especially as this has to be ordered
and the source data that is being inserted also comes from a set,
which might let us pass this more efficiently in the future.
Note that the validate function no longer checks the order of the
entries, as that is now guaranteed by the type.
Change-Id: I2fbb984facba3e668075f6f8df8992092368c63d
Reviewed-on: https://cl.tvl.fyi/c/depot/+/7826
Tested-by: BuildkiteCI
Reviewed-by: flokli <flokli@flokli.de>
This CL addresses clippy warning len_without_is_empty
which expects `.is_empty()` method to be present when
implementing `.len()` method for an item.
Change-Id: I8878db630b9ef5853649a906b764a33299bb5dc8
Signed-off-by: Aaqa Ishtyaq <aaqaishtyaq@gmail.com>
Reviewed-on: https://cl.tvl.fyi/c/depot/+/7806
Reviewed-by: flokli <flokli@flokli.de>
Tested-by: BuildkiteCI
This explains my current thinking on string contexts. Thanks to
everyone who gave input so far.
Change-Id: I773219402a79a9d4753b4e7cfbf3a4a751a993a3
Reviewed-on: https://cl.tvl.fyi/c/depot/+/7807
Tested-by: BuildkiteCI
Reviewed-by: flokli <flokli@flokli.de>
Implements `Serialize` for `tvix_eval::Value`. Special care is taken
with serialisation of attribute sets, and forcing of thunks.
The tests should cover both cases well.
Change-Id: I9bb135bacf6f87bc6bd0bd88cef0a42308e6c335
Reviewed-on: https://cl.tvl.fyi/c/depot/+/7803
Reviewed-by: flokli <flokli@flokli.de>
Tested-by: BuildkiteCI
Autosubmit: tazjin <tazjin@tvl.su>
Using yet more machinery from the pretty comprehensive aho_corasick
crate, this makes it possible to pass anything implementing `io::Read`
to the `ReferenceScanner` to accumulate matches.
Change-Id: I5b0e28eb44ea4df24010f40831e29f2cbb8c1f80
Reviewed-on: https://cl.tvl.fyi/c/depot/+/7810
Autosubmit: tazjin <tazjin@tvl.su>
Reviewed-by: flokli <flokli@flokli.de>
Tested-by: BuildkiteCI
This module implements a ReferenceScanner struct which uses the
aho_corasick crate to scan string inputs for known, non-overlapping
candidates (store paths, in our case).
I experimented with several different APIs, and landed on this version
with an initial accumulator in the scanner. The scanner is
instantiated from the candidates and "fed" all the strings, then
consumed by the caller to retrieve the result.
Right now only things that look vaguely like bytestrings can be fed to
the scanner, there is no streaming support in the API yet.
Change-Id: I7782f0f0df5fc64bccd813aa14712f5525b0168c
Reviewed-on: https://cl.tvl.fyi/c/depot/+/7808
Autosubmit: tazjin <tazjin@tvl.su>
Reviewed-by: flokli <flokli@flokli.de>
Tested-by: BuildkiteCI
This CL address clippy warnings related to use of 'format!' macro
to return unmodified 'String'.
Change-Id: I88726e59d8f39f6a455a8c1f48075b52d167e489
Signed-off-by: Aaqa Ishtyaq <aaqaishtyaq@gmail.com>
Reviewed-on: https://cl.tvl.fyi/c/depot/+/7804
Reviewed-by: flokli <flokli@flokli.de>
Tested-by: BuildkiteCI
This just shuffles the Display implementations around so that
ErrorKind itself is displayable, which is useful in some situations
where errors under construction need to be type-converted.
Change-Id: I7b633d03d0dc34f345c4f20676e0023ecb1db0c4
Reviewed-on: https://cl.tvl.fyi/c/depot/+/7802
Autosubmit: tazjin <tazjin@tvl.su>
Reviewed-by: edef <edef@edef.eu>
Tested-by: BuildkiteCI
Some of the fields in a Derivation struct stay empty, and manually
creating BTreeMap or vec for it is annoying.
Derive Default instead, so we can use the defaults instead of writing
more by hand.
Change-Id: I5d41b4b55c8187cb101eb4266451a470008e0067
Reviewed-on: https://cl.tvl.fyi/c/depot/+/7788
Reviewed-by: tazjin <tazjin@tvl.su>
Autosubmit: flokli <flokli@flokli.de>
Tested-by: BuildkiteCI
This placeholder should not live in the main crate anymore as we will
be injecting the real one from outside of eval, but there are still
language tests that depend on a (simple, mockable) version of it.
Change-Id: I68ea169db15cbdbeed320930d3069e21e376c90d
Reviewed-on: https://cl.tvl.fyi/c/depot/+/7783
Reviewed-by: flokli <flokli@flokli.de>
Autosubmit: tazjin <tazjin@tvl.su>
Tested-by: BuildkiteCI
Instead of concatenating STORE_DIR manually, use
StorePath::to_absolute_path() that does it for us.
Change-Id: Ia288851a05b4e339679db268f3dd7924e7b65586
Reviewed-on: https://cl.tvl.fyi/c/depot/+/7782
Autosubmit: flokli <flokli@flokli.de>
Reviewed-by: tazjin <tazjin@tvl.su>
Tested-by: BuildkiteCI
This project was not previously covered by CI (fixed in this commit),
so we didn't catch breakage due to a renamed module.
This was noticed while rebasing a CL that has a dependency on this
crate in its Nix build.
Change-Id: Ic48570b9313e5f73e14daab50cf7ea70918c94d1
Reviewed-on: https://cl.tvl.fyi/c/depot/+/7778
Reviewed-by: flokli <flokli@flokli.de>
Autosubmit: tazjin <tazjin@tvl.su>
Tested-by: BuildkiteCI
This embeds the build config directly at the point where `Cargo.nix`
is imported, making it transparent to library consumers.
Change-Id: I5586e12f02ed14587c32d9ef7d93f079366fb127
Reviewed-on: https://cl.tvl.fyi/c/depot/+/7780
Autosubmit: tazjin <tazjin@tvl.su>
Reviewed-by: flokli <flokli@flokli.de>
Tested-by: BuildkiteCI
As discussed in #tvl, this is a more common term for it.
Change-Id: I9b904222b8c076f82192c9b7f0b42be171614ab7
Reviewed-on: https://cl.tvl.fyi/c/depot/+/7776
Reviewed-by: tazjin <tazjin@tvl.su>
Tested-by: BuildkiteCI
This exercises the output path calculation functions like a constructing
client (an implementation of builtins.derivation) would do.
It first assembles the bar derivation, does the output path calculation
on it, then continues with the foo derivation.
The code ensures the resulting Derivations match our fixtures.
Change-Id: If93f89c6622fac1c1941085083931b6f657c04bc
Reviewed-on: https://cl.tvl.fyi/c/depot/+/7775
Reviewed-by: tazjin <tazjin@tvl.su>
Tested-by: BuildkiteCI
This provides a function returning a string starting with the store
path prefix, the counterpart of `from_absolute_path`.
Change-Id: I4947f3b00171fe70357c62b3d64dc769b69e7a44
Reviewed-on: https://cl.tvl.fyi/c/depot/+/7774
Reviewed-by: tazjin <tazjin@tvl.su>
Tested-by: BuildkiteCI
This will return the fixed output of a derivation (and its hash), or
None if the Derivation is not fixed-output.
It will simplify the logic in the output path calculation a bit.
Change-Id: I1066cc18ee4fc419421a8c5995c93ba91b35588f
Reviewed-on: https://cl.tvl.fyi/c/depot/+/7760
Tested-by: BuildkiteCI
Reviewed-by: tazjin <tazjin@tvl.su>
This moves all the hash compression logic into a common helper function.
Also update the docstring, which said "path" here, which could have been
confused with output paths.
Change-Id: Iedfb59aeb24f7638afac669dcd18d57b6cfaece2
Reviewed-on: https://cl.tvl.fyi/c/depot/+/7759
Reviewed-by: tazjin <tazjin@tvl.su>
Tested-by: BuildkiteCI
This is marginally more efficient and has simpler bytecode.
Change-Id: Iad37c9aeef24583e8f696911bcd83d43639f2e36
Reviewed-on: https://cl.tvl.fyi/c/depot/+/7769
Reviewed-by: raitobezarius <tvl@lahfa.xyz>
Tested-by: BuildkiteCI
Reviewed-by: flokli <flokli@flokli.de>
This adds a mechanism to the compiler to compile an expression without
emitting any code. This allows for detected dead code to still be
compiled to detect errors & warnings inside of it.
Change-Id: Ie78479173570e9c819d8f32ae683ce34234a4c5d
Reviewed-on: https://cl.tvl.fyi/c/depot/+/7767
Reviewed-by: flokli <flokli@flokli.de>
Tested-by: BuildkiteCI
This optimiser can rewrite some expressions into more efficient forms,
and warn users about those cases.
As a proof-of-concept, only some simple boolean comparisons are
supported for now.
Change-Id: I7df561118cfbad281fc99523e859bc66e7a1adcb
Reviewed-on: https://cl.tvl.fyi/c/depot/+/7766
Tested-by: BuildkiteCI
Reviewed-by: flokli <flokli@flokli.de>
This adds a very minimal amount of additional Rc-increments (~1 per
compilation), but makes it a lot easier to add an AST-optimising
compiler pass without incurring a lot of extra cost.
Change-Id: I57208bdfc8882e3ae21c5850e14aa380d3ccea36
Reviewed-on: https://cl.tvl.fyi/c/depot/+/7765
Reviewed-by: flokli <flokli@flokli.de>
Tested-by: BuildkiteCI
With this, tvix/cli can be run on files and only produce compiler
errors and warnings.
Change-Id: I5dd9229fc065647787daafd17d7c1540579a1d98
Reviewed-on: https://cl.tvl.fyi/c/depot/+/7764
Reviewed-by: flokli <flokli@flokli.de>
Tested-by: BuildkiteCI
This would make it possible to implement something like a linter based
on the tvix-eval compiler warnings.
Change-Id: I1feb4e7c4a44be7d1204b0a962ab522fd32b93c6
Reviewed-on: https://cl.tvl.fyi/c/depot/+/7763
Tested-by: BuildkiteCI
Reviewed-by: flokli <flokli@flokli.de>
There was probably a misunderstanding somewhere about the
with_stack_size being related to how far away it is from the with, but
it is about whether there is a with at all.
This broke a warning (`UselessInherit`), and may actually have let to
more inefficient codegen in some cases.
Change-Id: I08338ea59ae39dad01ca8a4e09d934a936cdea2f
Reviewed-on: https://cl.tvl.fyi/c/depot/+/7762
Reviewed-by: flokli <flokli@flokli.de>
Tested-by: BuildkiteCI
... without them, using the new Builtins API is basically impossible
for library consumers.
Change-Id: Ice0557a2e55e12d812f51bf5a99e6b8c91ad1b91
Reviewed-on: https://cl.tvl.fyi/c/depot/+/7755
Autosubmit: tazjin <tazjin@tvl.su>
Reviewed-by: flokli <flokli@flokli.de>
Tested-by: BuildkiteCI
Code probably rarely relies on these, but it's not hard to support them.
Change-Id: I8499fec34efaf031f9c013bbd370a13db929a2a3
Reviewed-on: https://cl.tvl.fyi/c/depot/+/7772
Reviewed-by: tazjin <tazjin@tvl.su>
Tested-by: BuildkiteCI
Autosubmit: sterni <sternenseemann@systemli.org>
This will eventually force us to have a base builtins set in common with
C++ Nix, i.e. all 2.3 builtins except the controversial
builtins.valueSize.
Change-Id: I2c767f07d6a14711911658e87da9f18ede57a143
Reviewed-on: https://cl.tvl.fyi/c/depot/+/7747
Autosubmit: sterni <sternenseemann@systemli.org>
Tested-by: BuildkiteCI
Reviewed-by: tazjin <tazjin@tvl.su>
This allows juggling with Derivation structs in unit tests, and makes it
very easy to compare them for equality.
Change-Id: I1faf2ec1eefb1a40fcee3c29f04ec47d29f22691
Reviewed-on: https://cl.tvl.fyi/c/depot/+/7758
Tested-by: BuildkiteCI
Reviewed-by: tazjin <tazjin@tvl.su>
Use the #[serde(rename = "…")] field attributes to match the field names
that Nix uses in its JSON output (nix show-derivation).
This allows us to just re-use the exact same fixtures from go-nix,
without manual post-massaging.
Change-Id: Ifd5c08e43cd4f50d5e02903eccd8cb37230b70a6
Reviewed-on: https://cl.tvl.fyi/c/depot/+/7757
Reviewed-by: jrhahn <mail.jhahn@gmail.com>
Tested-by: BuildkiteCI
Reviewed-by: tazjin <tazjin@tvl.su>
This conveys better if an output of a Derivation is fixed-output or not,
and provides a Hash struct that can be used to store the algo and
digest.
In case it's not, this can simply be None. The serde field attributes
have been updated to still accept the same JSON.
We currently still store the hash algo and digest as strings, mostly
because the only thing populating it so far is the example JSONs.
We might want to update this, once actual Nix code populates this.
While updating write.rs, I pushed some of the Vec<String> to [&str]
conversions inline, and made it a Vec<&str>, because it was annoying to
juggle with.
Change-Id: Ia9cd0568fe179ac22a4a636237f22ab4ad92b95b
Reviewed-on: https://cl.tvl.fyi/c/depot/+/7746
Tested-by: BuildkiteCI
Reviewed-by: jrhahn <mail.jhahn@gmail.com>
Reviewed-by: tazjin <tazjin@tvl.su>
Allow others to peek into values. We should probably still restrict
this further at a later point.
Change-Id: I2831432038aa87c3c7dcc85af4fa76a4fe0eadff
Reviewed-on: https://cl.tvl.fyi/c/depot/+/7745
Reviewed-by: tazjin <tazjin@tvl.su>
Tested-by: BuildkiteCI
There's now a common constant for this, so we don't need to redefine
it here.
Change-Id: I48b096f5e623e5fc5bbd355db83b674766935f94
Reviewed-on: https://cl.tvl.fyi/c/depot/+/7753
Tested-by: BuildkiteCI
Reviewed-by: tazjin <tazjin@tvl.su>
This allows constructing a NixPath from an absolute path. It pops off
the STORE_DIR prefix and the trailing slash and returns an error if it
couldn't be found.
Change-Id: Ib540e353c63cc247ac15e20414b0db2caf695ef4
Reviewed-on: https://cl.tvl.fyi/c/depot/+/7751
Tested-by: BuildkiteCI
Reviewed-by: tazjin <tazjin@tvl.su>
Implements externally tagged enum deserialisation. Other serialisation
methods are handled by serde internally using the existing methods.
See the tests for examples.
Change-Id: Ic4a9da3b5a32ddbb5918b1512e70c3ac5ce64f04
Reviewed-on: https://cl.tvl.fyi/c/depot/+/7721
Tested-by: BuildkiteCI
Autosubmit: tazjin <tazjin@tvl.su>
Reviewed-by: flokli <flokli@flokli.de>
Only missing enums at this point, but they're a bit of a beast.
Change-Id: I4ad47c034851f9a8794c81f39a5149a8ac1826e8
Reviewed-on: https://cl.tvl.fyi/c/depot/+/7716
Tested-by: BuildkiteCI
Reviewed-by: flokli <flokli@flokli.de>
Autosubmit: tazjin <tazjin@tvl.su>
With this is_valid_nix_identifier should line up with the upstream lexer
definition:
ID [a-zA-Z\_][a-zA-Z0-9\_\'\-]*
While we're working on this, add a simple test checking the various
formatting rules. Interestingly, it would not be suitable as an identity
test, since you have to write
{ "assert" = null; }
in order to avoid an evaluation error, but C++ Nix is happy to print
this as
{ assert = null; }
– maybe should be considered to be a bug.
Change-Id: I0a4e1ccb5033a80f3767fb8d1c4bba08d303c5d8
Reviewed-on: https://cl.tvl.fyi/c/depot/+/7744
Autosubmit: sterni <sternenseemann@systemli.org>
Tested-by: BuildkiteCI
Reviewed-by: tazjin <tazjin@tvl.su>
Previously the construction of globals (a compiler-only concept) and
builtins (a (now) user-facing API) was intermingled between multiple
different modules, and kind of difficult to understand.
The complexity of this had grown in large part due to the
implementation of `builtins.import`, which required the notorious
"knot-tying" trick using Rc::new_cyclic (see cl/7097) for constructing
the set of globals.
As part of the new `Evaluation` API users should have the ability to
bring their own builtins, and control explicitly whether or not impure
builtins are available (regardless of whether they're compiled in or
not).
To streamline the construction and allow the new API features to work,
this commit restructures things by making these changes:
1. The `tvix_eval::builtins` module is now only responsible for
exporting sets of builtins. It no longer has any knowledge of
whether or not certain sets (e.g. only pure, or pure+impure) are
enabled, and it has no control over which builtins are globally
available (this is now handled in the compiler).
2. The compiler module is now responsible for both constructing the
final attribute set of builtins from the set of builtins supplied
by a user, as well as for populating its globals (that is
identifiers which are available at the top-level scope).
3. The `Evaluation` API now carries a `builtins` field which is
populated with the pure builtins by default, and can be extended by
users.
4. The `import` feature has been moved into the compiler, as a
special case. In general, builtins no longer have the ability to
reference the "fix point" of the globals set.
This should not change any functionality, and in fact preserves minor
differences between Tvix/Nix that we already had (such as
`builtins.builtins` not existing).
Change-Id: Icdf5dd50eb81eb9260d89269d6e08b1e67811a2c
Reviewed-on: https://cl.tvl.fyi/c/depot/+/7738
Reviewed-by: sterni <sternenseemann@systemli.org>
Autosubmit: tazjin <tazjin@tvl.su>
Tested-by: BuildkiteCI
Reviewed-by: flokli <flokli@flokli.de>
This adds a function to generate the derivation path. The computation
is based on the Go implementation.
Change-Id: Iae89db4976f5fd9208f0453f73688689a245cd66
Reviewed-on: https://cl.tvl.fyi/c/depot/+/7729
Tested-by: BuildkiteCI
Reviewed-by: flokli <flokli@flokli.de>
This is just to clarify that the formatted result is the ATerm representation
Change-Id: I98fd0b1d2daa3cf6fdbe526ae1e0bd100ff62df3
Reviewed-on: https://cl.tvl.fyi/c/depot/+/7742
Tested-by: BuildkiteCI
Reviewed-by: flokli <flokli@flokli.de>
This adds the implementation of fmt::Display for Derivation so that we can
easily store the formatted content as a string. Internally, we use the
serialization function to generate the string.
Change-Id: I6caca0d6c1bea3ca44b6c535c5b1d5d66d8413b7
Reviewed-on: https://cl.tvl.fyi/c/depot/+/7741
Reviewed-by: flokli <flokli@flokli.de>
Tested-by: BuildkiteCI
Rename PATH_HASH_SIZE to DIGEST_SIZE.
It's a digest, not hash (we don't necessarily have the internal hash
state anymore), and the fact it's about (Nix)Paths is already visible
from the module name.
Also expose ENCODED_DIGEST_SIZE, so we don't need to do the calculation
inside from_string() method, and it becomes more clear this is a
constant.
Change-Id: I0e7577dd7a6e503039037b986313b214e995d826
Reviewed-on: https://cl.tvl.fyi/c/depot/+/7725
Reviewed-by: tazjin <tazjin@tvl.su>
Reviewed-by: jrhahn <mail.jhahn@gmail.com>
Tested-by: BuildkiteCI
These can be accessed directly.
Change-Id: I71dc84f982820d53f319efefbed9b9055034954d
Reviewed-on: https://cl.tvl.fyi/c/depot/+/7724
Tested-by: BuildkiteCI
Reviewed-by: tazjin <tazjin@tvl.su>
This provides validation of PathInfo messages, and ensures the output
hashes are properly parsed from the root node names.
NixPath already has a more extensive test suite for various wrong
NixPaths, so it's omitted from here.
Change-Id: I5d69118df5816daabb521ddb19d178bddd1caacf
Reviewed-on: https://cl.tvl.fyi/c/depot/+/7684
Reviewed-by: tazjin <tazjin@tvl.su>
Tested-by: BuildkiteCI
This allows other crates to import tvix_store.
Rename the bin crate to tvix-store-bin, to avoid having multiple crates
with the same name (https://github.com/rust-lang/cargo/issues/6313)
Change-Id: I857768d6115640dbf102e79ed03e8474090df2fe
Reviewed-on: https://cl.tvl.fyi/c/depot/+/7728
Tested-by: BuildkiteCI
Reviewed-by: tazjin <tazjin@tvl.su>
This will make it possible fairly easily use Nix to represent
arbitrary data structures, e.g. for using Nix as a config language.
Only pure Nix (i.e. no `import` etc.) is supported for now.
Not all types, specifically no struct traversal, are implemented in
this commit.
Change-Id: I9ac91a229a0d12bf818e6e3249f3e5a691599a2c
Reviewed-on: https://cl.tvl.fyi/c/depot/+/7712
Tested-by: BuildkiteCI
Reviewed-by: flokli <flokli@flokli.de>
This makes it easier to interface this error with other crates.
Change-Id: I4947ea6097608f8c0427fb94a819ef748d94ea4b
Reviewed-on: https://cl.tvl.fyi/c/depot/+/7711
Tested-by: BuildkiteCI
Reviewed-by: flokli <flokli@flokli.de>
This refactors the code to serialize a derivation. The original code
has beed moved to seperate crates for better code structure.
Change-Id: I3b1a6b134428fcbc9930c330bced8ec3610cfb4c
Reviewed-on: https://cl.tvl.fyi/c/depot/+/7733
Tested-by: BuildkiteCI
Reviewed-by: flokli <flokli@flokli.de>
This uses [tracing](https://github.com/tokio-rs/tracing) for logs/
tracing.
Annotate all method handlers with an instrument macro, and warn! a
message for them being unimplemented.
Co-Authored-By: Márton Boros <martonboros@gmail.com>
Change-Id: Id42a41db33782d82abfb8dc0e49a8915000e5d89
Reviewed-on: https://cl.tvl.fyi/c/depot/+/7665
Reviewed-by: tazjin <tazjin@tvl.su>
Tested-by: BuildkiteCI
This implements grpc.reflection.v1alpha.ServerReflection, and will make tools
like evans automatically discover available services, without having to
specify the path to the .proto files client-side.
It's behind a reflection feature flag, which is enabled by default.
Change-Id: Icbcb5eb05ceede5b9952e38a2ba72eaa6fa8a437
Reviewed-on: https://cl.tvl.fyi/c/depot/+/7435
Reviewed-by: tazjin <tazjin@tvl.su>
Tested-by: BuildkiteCI
This refactors how the original digest type (Vec<u8>) is converted
to [u8; PATH_HASH_SIZE].
Change-Id: I9441470a3a199620fcf328f2b7c890ca6ae93bde
Reviewed-on: https://cl.tvl.fyi/c/depot/+/7710
Tested-by: BuildkiteCI
Reviewed-by: flokli <flokli@flokli.de>
This replaces the hello world example from tvix-store with an actual
gRPC endpoint, implementing all of BlobService, DirectoryService and
PathInfoService.
All RPC methods currently respond with the unimplemented gRPC status.
Co-Authored-By: Márton Boros <martonboros@gmail.com>
Change-Id: Ieba333cca44dc1e3f2ffbe676ba7a99e672b9bfb
Reviewed-on: https://cl.tvl.fyi/c/depot/+/7664
Reviewed-by: tazjin <tazjin@tvl.su>
Tested-by: BuildkiteCI
Similar to cl/7682, we also want to make that error configurable.
Change-Id: I64f1a4570b3d75af4741abe10c2855959766e107
Reviewed-on: https://cl.tvl.fyi/c/depot/+/7708
Tested-by: BuildkiteCI
Reviewed-by: tazjin <tazjin@tvl.su>
This implements the NixPath structure. NixPath allow to parse a string to a nix path. If the parsing fails, a DecodeError will be raised.
Change-Id: I28363cdcfb27f04bf21a11c0d130b461667e3720
Reviewed-on: https://cl.tvl.fyi/c/depot/+/7706
Tested-by: BuildkiteCI
Reviewed-by: tazjin <tazjin@tvl.su>
This implements the nix-specific base32 encoding and decoding, exposing
a subset of the API that the data-encoding crate provides.
Nix uses a custom alphabet, no padding, and encodes bytes in reverse
order. The latter one is the reason we can't just use the data-encoding
crate directly.
Three odd corner case tests ported over from go-nix failed. We opened
b/235 to further investigate.
Change-Id: I73fab6ddd67177d882e4c3f2b48761c95853d558
Reviewed-on: https://cl.tvl.fyi/c/depot/+/7683
Reviewed-by: tazjin <tazjin@tvl.su>
Autosubmit: flokli <flokli@flokli.de>
Tested-by: BuildkiteCI
We'll be using validate_node_name in other places in a bit, where
returning a ValidateDirectoryError is not appropriate.
Accept a function mapping a string to error as a second argument, and
pass ValidateDirectoryError::InvalidName at the current call sites.
Change-Id: I45cbb0deb4763061ad912c6b18a112c727795a17
Reviewed-on: https://cl.tvl.fyi/c/depot/+/7682
Tested-by: BuildkiteCI
Reviewed-by: jrhahn <mail.jhahn@gmail.com>
Reviewed-by: tazjin <tazjin@tvl.su>
Autosubmit: flokli <flokli@flokli.de>
The `im::OrdMap` is already small and cheap to copy while sharing
memory, so this is not required anymore.
Only the `KV` variant may have slightly larger content, but in
practice this doesn't seem to make a difference when comparing the two
variants and this one is less complicated.
Change-Id: I64a563b209a2444125653777551373cb2989ca7d
Reviewed-on: https://cl.tvl.fyi/c/depot/+/7677
Reviewed-by: sterni <sternenseemann@systemli.org>
Tested-by: BuildkiteCI
This uses the `im::OrdMap` for `NixAttrs` to enable sharing of memory
between different iterations of a map.
This slightly speeds up eval, but not significantly. Future work might
include benchmarking whether using a `HashMap` and only ordering in
cases where order is actually required would help.
This switches to a fork of `im` that fixes some bugs with its OrdMap
implementation.
Change-Id: I2f6a5ff471b6d508c1e8a98b13f889f49c0d9537
Reviewed-on: https://cl.tvl.fyi/c/depot/+/7676
Reviewed-by: sterni <sternenseemann@systemli.org>
Tested-by: BuildkiteCI
The conversion from im::Vector -> Vec is cheaper for NixList
construction (of course), so where possible we should make use of
that.
This updates most builtins dealing with lists to use Vector directly,
and marks the function constructing NixList from Vec as deprecated so
that we get appropriate warnings in places where it's still in use.
These places are currently inside of JSON serialisation logic which is
in flux right now, so lets leave them as-is until it's stabilised.
Change-Id: I037f12a2800f2576db4d9526bd935efd079163f0
Reviewed-on: https://cl.tvl.fyi/c/depot/+/7671
Reviewed-by: sterni <sternenseemann@systemli.org>
Tested-by: BuildkiteCI
This adds a Derivation structure and allows to write it to a structure that implements std::fmt:Write.
The implementation is based on the go-nix version.
Change-Id: Ib54e1202b5c67f5d206b21bc109a751e971064cf
Reviewed-on: https://cl.tvl.fyi/c/depot/+/7659
Reviewed-by: flokli <flokli@flokli.de>
Reviewed-by: tazjin <tazjin@tvl.su>
Tested-by: BuildkiteCI
This is a persistent, structurally sharing data structure which is
more efficient in some of our use-cases. I have verified the
efficiency improvement using `hyperfine` repeatedly over expressions
on nixpkgs.
Lists are not the most performance-critical structure in Nix (that
would be attribute sets), but we can already see a small (~5-10%)
improvement.
Note that there are a handful of cases where we still go via `Vec`
that need to be fixed, most notable for `builtins.sort` which can not
currently be implemented directly using `im::Vector` because of a
restrictive type bound.
Change-Id: I237cc50cbd7629a046e5a5e4601fbb40355e551d
Reviewed-on: https://cl.tvl.fyi/c/depot/+/7670
Tested-by: BuildkiteCI
Reviewed-by: sterni <sternenseemann@systemli.org>
The only warnings left are unused warnings, but that'll change once we
have a real implementation, and not just tests.
Change-Id: I28912281b5e66735be37e999cc8ef4b8b09028fb
Reviewed-on: https://cl.tvl.fyi/c/depot/+/7669
Reviewed-by: tazjin <tazjin@tvl.su>
Tested-by: BuildkiteCI
lazy_static is only used in tests, and anyhow isn't used at all (yet).
This can be dropped.
Change-Id: Ic41ff3f9bb93cfa600c3485e85464f78a3976504
Reviewed-on: https://cl.tvl.fyi/c/depot/+/7668
Reviewed-by: tazjin <tazjin@tvl.su>
Tested-by: BuildkiteCI
Move them from the bottom of src/proto.rs to its own src/tests/mod.rs.
Also drop the test_ prefix, this is not golang.
Change-Id: I2e0b6b9812264f3d9721c0766936f08157fadc66
Reviewed-on: https://cl.tvl.fyi/c/depot/+/7667
Tested-by: BuildkiteCI
Reviewed-by: tazjin <tazjin@tvl.su>
Stat exposes metadata about a given blob,
such as more granular chunking, baos.
It implicitly allows checking for existence too, as asking this for a
non-existing Blob will return a Status::not_found grpc error.
The previous version returned a Status::not_found error on the Get
request too, but there was no chance to prevent the server from starting
to stream (except sending an immediate cancellation).
Being able to check whether something exists in a BlobStore helps to
prevent from uploading in first place.
The granular chunking bits are an optional optimization - if the
BlobStore implements no more granular chunking, the Stat response can
simply contain a single chunk.
Read returns a stream of BlobChunk, which is just a stream of bytes -
not necessarily using the chunking that's returned in the reply of a
Stat() call. It can be used to read blobs or chunks.
Change-Id: I4b6030ef184ace5484c84ca273b49d710433731d
Reviewed-on: https://cl.tvl.fyi/c/depot/+/7652
Reviewed-by: tazjin <tazjin@tvl.su>
Tested-by: BuildkiteCI
This changes the RPC methods to return/consume a stream of chunks, instead of a
very big message containing the whole blob, to keep message sizes in manageable
sizes (less than 4MiB).
Change-Id: I2a3a50f07b059d8a2f5196860254adff98c8a352
Reviewed-on: https://cl.tvl.fyi/c/depot/+/7651
Reviewed-by: tazjin <tazjin@tvl.su>
Tested-by: BuildkiteCI
Expose the NAR calculation to a separate `CalculateNAR` method, which
responds with the NAR size and sha256 hash.
Contrary to what cl/7618 and cl/7620 initially did, don't add different
other request types.
In the CalculateNARResponse message, there's now some duplication in the
(optional) `narinfo` field of a PathInfo, but I'm not entirely sure if
we want to drop the fields from there yet.
Change-Id: Id797c56e17efedac115fbd43de9dfde9fa1db140
Reviewed-on: https://cl.tvl.fyi/c/depot/+/7663
Reviewed-by: tazjin <tazjin@tvl.su>
Tested-by: BuildkiteCI
This is gonna get used in another place in a second.
Co-Authored-By: edef <edef@unfathomable.blue>
Change-Id: I347c11c8d24379628b7ed09d2c90670c576e686a
Reviewed-on: https://cl.tvl.fyi/c/depot/+/7617
Tested-by: BuildkiteCI
Reviewed-by: tazjin <tazjin@tvl.su>
While there's currently nothing in here checking the size of the digest,
we should use something that passes the to-be-introduced validate()
function.
Change-Id: I0c515d9e3afc79292dedebce659a32485aa3d936
Reviewed-on: https://cl.tvl.fyi/c/depot/+/7649
Reviewed-by: tazjin <tazjin@tvl.su>
Tested-by: BuildkiteCI
Validate thecks the Directory message for invalid data, such as:
- violations of name restrictions
- invalid digest lengths
- not properly sorted lists
- duplicate names in the three lists
Change-Id: I8d43a13797793c64097e526ef3bd482c9606c87b
Reviewed-on: https://cl.tvl.fyi/c/depot/+/7648
Reviewed-by: tazjin <tazjin@tvl.su>
Tested-by: BuildkiteCI
This adds Size() and Digest() functions for the golang version.
Change-Id: If71445a9bb26100bb4076ac4f5c96945b33919f9
Reviewed-on: https://cl.tvl.fyi/c/depot/+/7325
Tested-by: BuildkiteCI
Reviewed-by: tazjin <tazjin@tvl.su>
This allows importing the generated .pb.go files into other go projects.
I initially looked at buildGo.protos, but it doesn't work for multi-.proto
files, and actually having LSP support for the generated structs is nice, too.
Change-Id: Idbd448008010790a10a0ea42e4059dbb609eaf1a
Reviewed-on: https://cl.tvl.fyi/c/depot/+/7322
Tested-by: BuildkiteCI
Reviewed-by: tazjin <tazjin@tvl.su>
Change-Id: I0898b8a0a78e704219da38e5acaabef1e640d4e4
Reviewed-on: https://cl.tvl.fyi/c/depot/+/7321
Reviewed-by: Adam Joseph <adam@westernsemico.com>
Tested-by: BuildkiteCI
These are intended to help digest the protocol definitions for tvix-
store, and how they tie into the whole concept.
Co-Authored-By: Vincent Ambo <mail@tazj.in>
Change-Id: Ic1ba3ba41ef599209453f15d0ac2e07a6144bcca
Reviewed-on: https://cl.tvl.fyi/c/depot/+/7439
Tested-by: BuildkiteCI
Reviewed-by: tazjin <tazjin@tvl.su>
While prost-build already exposes protobuf message types as structs, we
actually need tonic-build too, to be able to get traits for all the RPC
services defined in the proto files.
Change-Id: I7f4c08454bf0d280d577975c7cdae13ccc2d933b
Reviewed-on: https://cl.tvl.fyi/c/depot/+/7320
Tested-by: BuildkiteCI
Reviewed-by: tazjin <tazjin@tvl.su>
It's been a while since the last time, so quite a lot of stuff has
accumulated here.
Change-Id: I0762827c197b30a917ff470fd8ae8f220f6ba247
Reviewed-on: https://cl.tvl.fyi/c/depot/+/7597
Reviewed-by: grfn <grfn@gws.fyi>
Autosubmit: tazjin <tazjin@tvl.su>
Tested-by: BuildkiteCI
Introduces continuation-passing-based trampolining of thunk forcing to
avoid recursing when forcing deeply nested expressions.
This is required for evaluating large expressions.
This change was extracted out of cl/7362.
Co-authored-by: Vincent Ambo <tazjin@tvl.su>
Co-authored-by: Griffin Smith <grfn@gws.fyi>
Change-Id: Ifc1747e712663684b2fff53095de62b8459a47f3
Reviewed-on: https://cl.tvl.fyi/c/depot/+/7551
Reviewed-by: grfn <grfn@gws.fyi>
Tested-by: BuildkiteCI
Reviewed-by: tazjin <tazjin@tvl.su>
... if they are known. We currently do not propagate names correctly
for curried functions.
Change-Id: I19d57fb30a5c0000ccdf690b91076f6b2191de23
Reviewed-on: https://cl.tvl.fyi/c/depot/+/7596
Tested-by: BuildkiteCI
Reviewed-by: grfn <grfn@gws.fyi>
This value creates a human-readable explanation of a value. This can
be used to implement documentation related functionality.
For some values, the amount of information displayed can be expanded
quite a bit.
Change-Id: Ie8c400feae909e7680af163596f99060262e4241
Reviewed-on: https://cl.tvl.fyi/c/depot/+/7592
Reviewed-by: grfn <grfn@gws.fyi>
Tested-by: BuildkiteCI
This type allows for temporarily compatibility with the C++ Nix store,
specifically (for now) it gives us the store directory used by Nix and
imports files the same way.
Change-Id: I4767794ef2863eba49661315c63c4e17de946d60
Reviewed-on: https://cl.tvl.fyi/c/depot/+/7587
Reviewed-by: grfn <grfn@gws.fyi>
Tested-by: BuildkiteCI
`mg run //tvix:crate2nixGenerate --` runs crate2nix generate and
depotfmt's it afterwards.
This removes a frequent point of friction, because the Cargo.nix emitted
by crate2nix needs another formatter.
Change-Id: I649495980718cd3847d4cff77c9d4bfcb599387c
Reviewed-on: https://cl.tvl.fyi/c/depot/+/7612
Tested-by: BuildkiteCI
Reviewed-by: grfn <grfn@gws.fyi>
This provides an interface to retrieve and upload single Directory
messages, or a DAG of them.
Change-Id: Id9e7084bd697d843649a122da2c992a3e36d808c
Reviewed-on: https://cl.tvl.fyi/c/depot/+/7137
Tested-by: BuildkiteCI
Reviewed-by: Adam Joseph <adam@westernsemico.com>
This defines a service that can be used to upload and retrieve metadata
of nix paths.
Change-Id: Id86eb531ce4ae316adb15934b0d1386a14ba2132
Reviewed-on: https://cl.tvl.fyi/c/depot/+/7136
Tested-by: BuildkiteCI
Reviewed-by: tazjin <tazjin@tvl.su>
Reviewed-by: Adam Joseph <adam@westernsemico.com>
Having a multi-line docstring yields multiple doc-attributes in order,
however we were previously discarding all but the first one.
This reduces them into a single string instead, which can then be
displayed as multi-line documentation.
Change-Id: I1f237956cdea2e4c746d3f13744e0373c1c645a6
Reviewed-on: https://cl.tvl.fyi/c/depot/+/7594
Reviewed-by: grfn <grfn@gws.fyi>
Autosubmit: tazjin <tazjin@tvl.su>
Tested-by: BuildkiteCI
This "ties the knot" of importing files into a store when referring
to them through path literals, e.g. inside of strings.
I'm not yet sure if this interface is sufficient for
builtins.path (which we haven't implemented at all yet), but it's
enough to wire up eval & store initially.
In the default implementations nothing interesting happens in this
function at all.
Change-Id: Ie01ff4161617d1e743a68dbd1a5e54c1b40c0990
Reviewed-on: https://cl.tvl.fyi/c/depot/+/7582
Reviewed-by: grfn <grfn@gws.fyi>
Tested-by: BuildkiteCI
Returns the store directory through EvalIO::store_dir.
Note that this is _optional_ in Tvix, as an evaluation can occur in a
context where there simply is no store directory. In those contexts,
`builtins.storeDir` returns `null` in Tvix.
This would only happen in contexts like Tvixbolt (or completely
unrelated use-cases) in practice.
Co-Authored-By: Vincent Ambo <tazjin@tvl.su>
Change-Id: I5a752c7e89b2f75bd7efb082dbfa5b25e3b1ff3b
Reviewed-on: https://cl.tvl.fyi/c/depot/+/7452
Autosubmit: Adam Joseph <adam@westernsemico.com>
Tested-by: BuildkiteCI
Reviewed-by: grfn <grfn@gws.fyi>
This shouldn't be available if we've built a "pure" crate.
Change-Id: I7c85827ee212890252ff7e0b6242e2c52618cba5
Reviewed-on: https://cl.tvl.fyi/c/depot/+/7572
Tested-by: BuildkiteCI
Reviewed-by: grfn <grfn@gws.fyi>
... until we have a store-I/O layer, or something that intercepts the
store-related stuff appropriately.
Change-Id: I22f63435b3f9e118e3faeb2924fda8373a23ea7f
Reviewed-on: https://cl.tvl.fyi/c/depot/+/7568
Reviewed-by: grfn <grfn@gws.fyi>
Tested-by: BuildkiteCI
With this change, the behaviour of reading a string from a file path
is controlled by the provided `EvalIO` structure.
This is a huge step towards abstracting away I/O behaviour correctly.
Change-Id: Ifde8e46cd863b16e0301dca45a434ad27560399f
Reviewed-on: https://cl.tvl.fyi/c/depot/+/7567
Tested-by: BuildkiteCI
Reviewed-by: grfn <grfn@gws.fyi>
This lets users set the `io_handle` field on an `Evaluation`, which is
then propagated to the VM.
Change-Id: I616d7140724fb2b4db47c2ebf95451d5303a487a
Reviewed-on: https://cl.tvl.fyi/c/depot/+/7566
Reviewed-by: grfn <grfn@gws.fyi>
Tested-by: BuildkiteCI
This trait is going to be used to abstract filesystem interactions in
Tvix.
For now, it only contains a `read_to_string` method that closely
mirrors `std::fs::read_to_string`.
As a first step, to see how this works in practice, we will thread
through only this function to the various relevant parts.
Two implementations are provided in tvix-eval itself: A dummy
implementation (which just returns ErrorKind::NotImplemented for all
operations), and a std implementation which delegates to `std`
functions.
Change-Id: Ied3e3bf4bd0e874dd84e166190e3873a0f923ddb
Reviewed-on: https://cl.tvl.fyi/c/depot/+/7565
Reviewed-by: grfn <grfn@gws.fyi>
Tested-by: BuildkiteCI
This type carries the information required for calculating a
span (i.e. the chunk and offset), instead of the span itself. The span
is then only calculated in cases where it is required (when throwing
errors).
This reduces the eval time for
`builtins.length (builtins.attrNames (import <nixpkgs> {}))` by *one
third*!
The data structure in chunks that carries span information reduces
in-memory size by trading off the speed of retrieving span
information. This is because the span information is only actually
required when throwing errors (or emitting warnings).
However, somewhere along the way we grew a dependency on carrying span
information in thunks (for correctly reporting error chains). Hitting
the code paths for span retrieval was expensive, and carrying the
spans in a different way would still be less cache-efficient. This
change is the best tradeoff I could come up with.
Refs: b/229.
Change-Id: I27d4c4b5c5f9be90ac47f2db61941e123a78a77b
Reviewed-on: https://cl.tvl.fyi/c/depot/+/7558
Reviewed-by: grfn <grfn@gws.fyi>
Tested-by: BuildkiteCI
Having thunks which, when forced, execute native Rust code rather
than interpreted opcodes lets us avoid having to bundle
`src/libexpr/primops/derivation.nix` like cppnix does by implementing
it in Rust instead.
Change-Id: If91d77a6736234321eee87ba4b4777eed5a3fe1c
Reviewed-on: https://cl.tvl.fyi/c/depot/+/7450
Reviewed-by: grfn <grfn@gws.fyi>
Tested-by: BuildkiteCI
Instead of finding locals by doing 2x O(n) walks over the compiler's
locals list, use a secondary name-based index for resolving locals by
name.
Previously, almost 60% (!!) of eval time on some expressions over
nixpkgs was spent in `Local::has_name`. This function doesn't even
exist anymore now, and eval speed about doubles as a result.
Note that this doesn't exactly make the locals code easier to read,
but I'm also not sure what we can simplify in there in general.
This fixes b/227.
Change-Id: I29ce5eb9452b02d3b358c673e1f5cf8082e2fef9
Reviewed-on: https://cl.tvl.fyi/c/depot/+/7560
Reviewed-by: grfn <grfn@gws.fyi>
Tested-by: BuildkiteCI
This is done in the form of some comments on the functions, as well as
a functional doctest that writes a single file to a NAR.
Change-Id: Ic97ebd439e91d6b076685807fe70de098ec02575
Reviewed-on: https://cl.tvl.fyi/c/depot/+/7599
Autosubmit: tazjin <tazjin@tvl.su>
Tested-by: BuildkiteCI
Reviewed-by: flokli <flokli@flokli.de>
Users can again pass flags for dumping the AST, bytecode, and runtime
trace.
With this commit the CLI is at feature-parity with what we had before,
but entirely through the new API.
Change-Id: I30fe26f243224b25d1e4f828fec607325ef88306
Reviewed-on: https://cl.tvl.fyi/c/depot/+/7550
Tested-by: BuildkiteCI
Reviewed-by: grfn <grfn@gws.fyi>
With this change, it should be possible to have both existing
use-cases (CLI & Tvixbolt) use the same API.
Change-Id: I2195264f08cc892177b559a28660dc5f98e48e41
Reviewed-on: https://cl.tvl.fyi/c/depot/+/7545
Autosubmit: tazjin <tazjin@tvl.su>
Tested-by: BuildkiteCI
Reviewed-by: grfn <grfn@gws.fyi>
This is required for passing through NIX_PATH from the CLI.
Change-Id: If129df79ef9c3ffab31408adb85679909276c4f0
Reviewed-on: https://cl.tvl.fyi/c/depot/+/7544
Reviewed-by: grfn <grfn@gws.fyi>
Autosubmit: tazjin <tazjin@tvl.su>
Tested-by: BuildkiteCI
This should make no difference in Nix builds, but allows running tests
locally again with `cargo test` for //tvix/eval.
Change-Id: I97d61840143d5c14db61d5862781bf635f9a28e7
Reviewed-on: https://cl.tvl.fyi/c/depot/+/7590
Reviewed-by: grfn <grfn@gws.fyi>
Tested-by: BuildkiteCI
Reviewed-by: flokli <flokli@flokli.de>
In //tvix/eval:
* criterion bumped to 4.0, which at least depends on clap 3.x instead
of 2.x, which is less incompatible
In //tvix/cli:
* no changes required
In //tvix/nix_cli:
* some minor changes for compatibility with clap 4.0, no functionality
changes
Change-Id: If793f64b59fcaa2402d3d483ddbab4092f32df03
Reviewed-on: https://cl.tvl.fyi/c/depot/+/7588
Reviewed-by: grfn <grfn@gws.fyi>
Tested-by: BuildkiteCI
The tvix-eval project is independent from any *uses* of the evaluator,
such as the tvix-repl.
This functionality has been split out into a separate "tvix-cli"
crate. Note that this doesn't have to mean that this CLI crate is the
"final" CLI crate for tvix, the point of this is not "getting the CLI
structure right" but rather "getting the evaluator structure right".
This reshuffling is part of restructuring the way that functionality
like store communication is injected into language evaluation.
Note that at this commit the new CLI crate is not at feature-parity.
Change-Id: Id0af03dc8e07ef09a9f882a89612ad555eca8f93
Reviewed-on: https://cl.tvl.fyi/c/depot/+/7541
Autosubmit: tazjin <tazjin@tvl.su>
Reviewed-by: grfn <grfn@gws.fyi>
Tested-by: BuildkiteCI
This removes internal uses of the previous crate::eval module, which
is being removed.
Change-Id: I5fb3c53460a9c5381853d0258f9ed074ab23c630
Reviewed-on: https://cl.tvl.fyi/c/depot/+/7543
Tested-by: BuildkiteCI
Autosubmit: tazjin <tazjin@tvl.su>
Reviewed-by: grfn <grfn@gws.fyi>
A step towards something more like how I imagine the future public API
for tvix-eval. Please note that this is definitely not the final
version yet, but it's better than the previous API that either exposed
a side-effecting blackbox, or a very low-level "interface".
The basic idea is that an evaluation of some Nix code is requested by
a caller with various parameters, but not all callers are interested
in all of these parameters.
There are also some bits of information that are returned from an
evaluation that are not necessarily relevant to all callers.
To support this somewhat ergonomically, the API is built around an
`Evaluation` struct that is configured by the caller with the various
parameters and then "executed".
Change-Id: I71826f3897126898adc2873d31c44d3eaf5c2be0
Reviewed-on: https://cl.tvl.fyi/c/depot/+/7542
Reviewed-by: grfn <grfn@gws.fyi>
Autosubmit: tazjin <tazjin@tvl.su>
Tested-by: BuildkiteCI
This defines a service that can be used to get and put content-addressed
chunks of data.
Change-Id: I36cf2278ed1daf71848c04fdfd14450b2268c5de
Reviewed-on: https://cl.tvl.fyi/c/depot/+/7135
Tested-by: BuildkiteCI
Reviewed-by: tazjin <tazjin@tvl.su>
