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Reimplement the test discovery of the lang tests script in Nix which
allows for a more flexible skipping logic that can e.g. react to the C++
Nix version used. This allows us to run the test suite against both
C++ Nix 2.3 and the latest C++ Nix version 2.11. The latter is mainly
useful, so we can implement newer Nix features and still verify them
against the C++ implementation.
Change-Id: I30c802844133b86b5e49f5e4f4fefacdb6215e0e
Reviewed-on: https://cl.tvl.fyi/c/depot/+/7042
Autosubmit: sterni <sternenseemann@systemli.org>
Tested-by: BuildkiteCI
Reviewed-by: tazjin <tazjin@tvl.su>
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It is helpful to be able to use the test suite as a regression test:
make a change to the compiler/vm, re-run the tests, and if there are
any failures you know it's your fault.
Right now we can't do that, because the expected-to-fail tests are
mixed in with the expected-to-pass tests. So we can't use them as a
regression test.
Change-Id: Ied606882b9835a7effd7e75bfcf3e5f827e0a2c8
Signed-off-by: Adam Joseph <adam@westernsemico.com>
Reviewed-on: https://cl.tvl.fyi/c/depot/+/7036
Reviewed-by: tazjin <tazjin@tvl.su>
Tested-by: BuildkiteCI
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This commit deduplicates the Thunk-like functionality from Closure
and unifies it with Thunk.
Specifically, we now have one and only one way of breaking reference
cycles in the Value-graph: Thunk. No other variant contains a
RefCell. This should make it easier to reason about the behavior of
the VM. InnerClosure and UpvaluesCarrier are no longer necessary.
This refactoring allowed an improvement in code generation:
`Rc<RefCell<>>`s are now created only for closures which do not have
self-references or deferred upvalues, instead of for all closures.
OpClosure has been split into two separate opcodes:
- OpClosure creates non-recursive closures with no deferred
upvalues. The VM will not create an `Rc<RefCell<>>` when executing
this instruction.
- OpThunkClosure is used for closures with self-references or
deferred upvalues. The VM will create a Thunk when executing this
opcode, but the Thunk will start out already in the
`ThunkRepr::Evaluated` state, rather than in the
`ThunkRepr::Suspeneded` state.
To avoid confusion, OpThunk has been renamed OpThunkSuspended.
Thanks to @sterni for suggesting that all this could be done without
adding an additional variant to ThunkRepr. This does however mean
that there will be mutating accesses to `ThunkRepr::Evaluated`,
which was not previously the case. The field `is_finalised:bool`
has been added to `Closure` to ensure that these mutating accesses
are performed only on finalised Closures. Both the check and the
field are present only if `#[cfg(debug_assertions)]`.
Change-Id: I04131501029772f30e28da8281d864427685097f
Signed-off-by: Adam Joseph <adam@westernsemico.com>
Reviewed-on: https://cl.tvl.fyi/c/depot/+/7019
Tested-by: BuildkiteCI
Reviewed-by: tazjin <tazjin@tvl.su>
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In `a++b`, the previous implementation would move `b` (i.e. memcpy
its elements) twice. Let's do that only once.
We sure do call NixList.clone() a whole lot. At some point in the
future we probably want to do a SmolStr-type split for NixList into
a two-variant enum where one side is an Rc<Vec<Value>> for lists
longer than a certain length.
Signed-off-by: Adam Joseph <adam@westernsemico.com>
Change-Id: I32154d18785a1f663454a8b9d4afd3e78bffdf9c
Reviewed-on: https://cl.tvl.fyi/c/depot/+/7040
Tested-by: BuildkiteCI
Reviewed-by: tazjin <tazjin@tvl.su>
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This commit adds a comment for the benefit of non-Lua-users
explaining what an upvalue is. It also adds a comment explaining
what `with_stack` does, including a brief reminder of nix's
slightly-unusual-but-well-justified handling of this construct.
Signed-off-by: Adam Joseph <adam@westernsemico.com>
Change-Id: If6d0e133292451af906e1c728e34010f99be8c7c
Reviewed-on: https://cl.tvl.fyi/c/depot/+/7007
Reviewed-by: j4m3s <james.landrein@gmail.com>
Reviewed-by: tazjin <tazjin@tvl.su>
Tested-by: BuildkiteCI
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Without this change it was possible to cause situations (see the new
test) in which a `with`-namespace was forced prematurely.
Change-Id: I879ea7763b43edc693feace2c73c890d426fafd3
Reviewed-on: https://cl.tvl.fyi/c/depot/+/7031
Autosubmit: tazjin <tazjin@tvl.su>
Tested-by: BuildkiteCI
Reviewed-by: Adam Joseph <adam@westernsemico.com>
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Now that we're tracking formals on Lambda this ends up being quite easy;
we just pull them off of the Lambda for the argument closure and use
them to construct the result attribute set.
Change-Id: I811cb61ec34c6bef123a4043000b18c0e4ea0125
Reviewed-on: https://cl.tvl.fyi/c/depot/+/7003
Reviewed-by: tazjin <tazjin@tvl.su>
Tested-by: BuildkiteCI
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Validate "closed formals" (formal parameters without an ellipsis) via a
new ValidateClosedFormals op, which checks the arguments (in an attr set
at the top of the stack) against the formal parameters on the Lambda in
the current frame, and returns a new UnexpectedArgument error (including
the span of the formals themselves!!) if any arguments aren't allowed
Change-Id: Idcc47a59167a83be1832a6229f137d84e426c56c
Reviewed-on: https://cl.tvl.fyi/c/depot/+/7002
Reviewed-by: tazjin <tazjin@tvl.su>
Tested-by: BuildkiteCI
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In preparation for both implementing the `functionArgs` builtin and
adding support for validating closed formals, record information about
the formal arguments to a function *on the Lambda itself*. This may seem
a little odd for the purposes of just closed formal checking, but is
something we have to have anyway for builtins.functionArgs so I figured
I'd do it this way to kill both birds with one stone.
Change-Id: Ie3770a607bf352a1eb395c79ca29bb25d5978cd8
Reviewed-on: https://cl.tvl.fyi/c/depot/+/7001
Reviewed-by: tazjin <tazjin@tvl.su>
Tested-by: BuildkiteCI
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Since we already have infra for forcing arguments to builtins, this ends
up being almost *too* simple - we just return the second argument!
Change-Id: I070d3d0b551c4dcdac095f67b31e22e0de90cbd7
Reviewed-on: https://cl.tvl.fyi/c/depot/+/6999
Reviewed-by: kanepyork <rikingcoding@gmail.com>
Reviewed-by: tazjin <tazjin@tvl.su>
Tested-by: BuildkiteCI
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Change-Id: I8dcddf2b419761e475e71215c199eef2f7dc61dc
Reviewed-on: https://cl.tvl.fyi/c/depot/+/7028
Autosubmit: Adam Joseph <adam@westernsemico.com>
Tested-by: BuildkiteCI
Reviewed-by: tazjin <tazjin@tvl.su>
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This resolves a TODO.
Signed-off-by: Adam Joseph <adam@westernsemico.com>
Change-Id: If4d2124648ac88094e547e1ad7f1b446feb26182
Reviewed-on: https://cl.tvl.fyi/c/depot/+/7010
Tested-by: BuildkiteCI
Reviewed-by: tazjin <tazjin@tvl.su>
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The previous serialisation format kind of lost the information about
what AST node we're dealing with (e.g. `1234` would serialise to an
AST with a literal `1234`).
That's great for pretty-printing the _code_, but we explicitly want to
serialise how rnix-parser parses something.
To that end, literals are now instead serialised into a structure like
all the other ones (`kind: literal` and appropriate value fields).
Change-Id: I586c95d7db41820b8ec43565ba4016ed3834d1b5
Reviewed-on: https://cl.tvl.fyi/c/depot/+/7030
Autosubmit: tazjin <tazjin@tvl.su>
Tested-by: BuildkiteCI
Reviewed-by: j4m3s <james.landrein@gmail.com>
Reviewed-by: Adam Joseph <adam@westernsemico.com>
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Change-Id: I8b591f3057c68c1542046fc5a771973f2238c9df
Reviewed-on: https://cl.tvl.fyi/c/depot/+/7020
Autosubmit: j4m3s <james.landrein@gmail.com>
Reviewed-by: tazjin <tazjin@tvl.su>
Tested-by: BuildkiteCI
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Home relative paths depend on the environment to be resolved. We have
elected to do everything that depends on the environment, e.g. resolving
SPATH expressions using NIX_PATH, at runtime, so tvix evaluation would
continue to behave correctly even if we separated the compilation and
execution phases more, e.g. via serializing bytecode. Then the value of
HOME, NIX_PATH etc. could reasonably change in the time until execution,
yielding wrong results if the resolution results were cached in the
bytecode.
We also take the opportunity to fix the broken path concatenation
previously found in the compiler, fixing b/205.
Another thing we could consider is emitting a warning for home relative
path literals, as they are by nature relatively fragile.
One sideeffect of this change is that home path resolution errors
become catchable which is not the case in C++ Nix. This will need to be
fixed up in a subsequent change.
Change-Id: I30bd69b575667c49170a9fdea23a020565d0f9ec
Reviewed-on: https://cl.tvl.fyi/c/depot/+/7024
Autosubmit: sterni <sternenseemann@systemli.org>
Reviewed-by: Adam Joseph <adam@westernsemico.com>
Tested-by: BuildkiteCI
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To assert that OpFindFile is only emitted for specially compiled SPATH
expressions, as well as make sure it doesn't accidentally operate on
“ordinary values”, introduce an UnresolvedPath internal value. If
OpFindFile sees a non-UnresolvedPath value, it'll crash.
Note that this change is not done purely for OpFindFile: We may want to
compile SPATH expressions as function calls to __findFile (like C++ Nix
does) in the future, so the UnresolvedPath value would definitely need
to be an ordinary string again then. Rather, this change is done in
preparation for resolving home dir relative paths at runtime (since they
depend on the environment) for which we'll need a similar mechanism to
OpFindFile.
Change-Id: I6acf287f35197cd9e13377079f972b9d36e5b22e
Reviewed-on: https://cl.tvl.fyi/c/depot/+/7023
Autosubmit: sterni <sternenseemann@systemli.org>
Reviewed-by: Adam Joseph <adam@westernsemico.com>
Tested-by: BuildkiteCI
Reviewed-by: tazjin <tazjin@tvl.su>
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This implements serde::Serialize for the rnix AST through a wrapper
type, and exposes a function for serialising the AST into
a (pretty-printed JSON) string representation.
This can be used to debug issues with the AST, and to display an AST
reprsentation in tools like tvixbolt.
Serialize is implemented manually because we don't own any of the
structs and the way to traverse them is not easily derived
automatically, and this is quite verbose. We might be able to condense
it a little bit, but at the same time it's also fairly straightforward.
Change-Id: I922df43cfc25636f3c8baee7944c75ade516055c
Reviewed-on: https://cl.tvl.fyi/c/depot/+/6943
Autosubmit: tazjin <tazjin@tvl.su>
Tested-by: BuildkiteCI
Reviewed-by: Adam Joseph <adam@westernsemico.com>
Reviewed-by: tazjin <tazjin@tvl.su>
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Lambda has a quite large and variable-sized runtime representation,
unlike Rc<Lambda>. It would be easy to accidentally call clone() on
this and create input-dependent performance regressions.
Nothing in the codebase is currently using Lambda.clone(). Let's
remove the derived instance. If it's really needed it is very easy
to add it back in, but whoever does that will have to look at the
struct they're adding Clone to, which will hopefully prompt them to
think about whether or not that's really what they want to do.
Change-Id: I7806a741862ab4402229839ce3f4ea75aafd6d12
Reviewed-on: https://cl.tvl.fyi/c/depot/+/7029
Autosubmit: Adam Joseph <adam@westernsemico.com>
Reviewed-by: tazjin <tazjin@tvl.su>
Tested-by: BuildkiteCI
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Change-Id: I8aa878dee009901feb453c489ce37c12fa3a31a8
Reviewed-on: https://cl.tvl.fyi/c/depot/+/7026
Autosubmit: sterni <sternenseemann@systemli.org>
Reviewed-by: Adam Joseph <adam@westernsemico.com>
Reviewed-by: tazjin <tazjin@tvl.su>
Tested-by: BuildkiteCI
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I believe this variant is left over from a previous implementation.
If not, please let me know.
Signed-off-by: Adam Joseph <adam@westernsemico.com>
Change-Id: I02a3bf2f63794d09e96a5a92a034c0ad3d1ff221
Reviewed-on: https://cl.tvl.fyi/c/depot/+/7027
Tested-by: BuildkiteCI
Reviewed-by: tazjin <tazjin@tvl.su>
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Change-Id: Iaba9bcfa19f283cd0c1931be2f211e2528a1a940
Reviewed-on: https://cl.tvl.fyi/c/depot/+/6998
Tested-by: BuildkiteCI
Reviewed-by: tazjin <tazjin@tvl.su>
Reviewed-by: kanepyork <rikingcoding@gmail.com>
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Implement an *initial* version of builtins.match, using the rust `regex`
crate for regular expressions. The rust regex crate definitely has
different semantics than nix's regular expressions - but we'd like to
see how far we can get before the incompatibility starts to matter.
This consciously leaves out any sort of memo for compiled regular
expressions (which upstream nix also has) for the sake of expediency -
in the future we should implement that so we don't have to compile the
same regular expression multiple times.
Change-Id: I5b718635831ec83397940e417a9047c4342b6fa1
Reviewed-on: https://cl.tvl.fyi/c/depot/+/6989
Tested-by: BuildkiteCI
Reviewed-by: Adam Joseph <adam@westernsemico.com>
Reviewed-by: tazjin <tazjin@tvl.su>
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Using `serde_json` for parsing JSON here, plus an `impl FromJSON for
Value`. The latter is primarily to stay "dependency light" for now -
likely going with an actual serde `Deserialize` impl in the future is
going to be way better as it allows saving significantly on intermediary
allocations.
Change-Id: I152a0448ff7c87cf7ebaac927c38912b99de1c18
Reviewed-on: https://cl.tvl.fyi/c/depot/+/6920
Tested-by: BuildkiteCI
Reviewed-by: tazjin <tazjin@tvl.su>
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Working on https://github.com/NixOS/nix/pull/7158, I discovered that C++
Nix actually is strict in the accumulator, just not in the first value.
This seems due to the fact that in the C++ evaluator, function calls
don't seem to be thunked unconditionally and foldl' just elects not to
wrap it in a thunk (don't quote me on this summary, even though it seems
to line up with the code for primop_foldlStrict and testable behavior).
It doesn't seem worth it to risk breaking the odd Nix expression just to
be strict in one more value per invocation of foldl' (i.e. the initial
accumulator value `nul`), so let's match the existing C++ Nix behavior
here.
Change-Id: If59e62271a90d97cb440f0ca72a58ec7840d1690
Reviewed-on: https://cl.tvl.fyi/c/depot/+/7022
Autosubmit: sterni <sternenseemann@systemli.org>
Tested-by: BuildkiteCI
Reviewed-by: tazjin <tazjin@tvl.su>
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This commit causes the test eval-okay-builtins.nix to pass.
It also adds tests/tvix_tests/eval-okay-dirof.nix which has better
coverage than the nix tests for this builtin.
Signed-off-by: Adam Joseph <adam@westernsemico.com>
Change-Id: I71d96b48680696fd6e4fea3a9861742b35cfaa66
Reviewed-on: https://cl.tvl.fyi/c/depot/+/6987
Reviewed-by: tazjin <tazjin@tvl.su>
Tested-by: BuildkiteCI
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Signed-off-by: Adam Joseph <adam@westernsemico.com>
Change-Id: I94ba31ae25c1ff744f929a722c76a0c33cc361ff
Reviewed-on: https://cl.tvl.fyi/c/depot/+/7016
Reviewed-by: tazjin <tazjin@tvl.su>
Tested-by: BuildkiteCI
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This commit implements builtins.toPath. Like OP_ADD, it currently
does not handle string contexts.
This commit allows the
tests::nix_eval_okay_src_tests_nix_tests_eval_okay_pathexists_nix
test to pass.
Signed-off-by: Adam Joseph <adam@westernsemico.com>
Change-Id: Iadd4f7605f8f297adbd0dba187b8481c21370b6e
Reviewed-on: https://cl.tvl.fyi/c/depot/+/6996
Reviewed-by: tazjin <tazjin@tvl.su>
Tested-by: BuildkiteCI
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Maybe I misunderstood this part of the code, but the use of `unsafe`
appears unnecessary here? In any event it is the one and only
`unsafe` in the codebase.
Hopefully getting to "no `unsafe` anywhere" is worth the extra
never-taken branch caused by unwrap() instead of unwrap_unchecked()?
Signed-off-by: Adam Joseph <adam@westernsemico.com>
Change-Id: I33fbd5aad9d8307ea82c24b6220412783e1973c6
Reviewed-on: https://cl.tvl.fyi/c/depot/+/7011
Tested-by: BuildkiteCI
Reviewed-by: tazjin <tazjin@tvl.su>
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The case branch in vm.rs for OpResolveWithOrUpvalue is
unreachable/deadcode.
I believe this opcode is unnecessary, since it should always be
statically detectable (at parse-time) whether a reference is to an
upvalue (i.e. enclosing binding); otherwise, and only then, is
with-resolution applicable.
Perhaps I've misunderstood how with-resolution works. If so, please
explain it to me and -1/-2 this CL.
Signed-off-by: Adam Joseph <adam@westernsemico.com>
Change-Id: I4a90b9eb6cb3396df92a6a943d42ecc301871ba0
Reviewed-on: https://cl.tvl.fyi/c/depot/+/7009
Tested-by: BuildkiteCI
Reviewed-by: tazjin <tazjin@tvl.su>
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This makes it easier to compare currently implemented ones with the full
list.
Change-Id: Ibaffd99d05afa15fc9ab644fd101afa24fc7a1b2
Reviewed-on: https://cl.tvl.fyi/c/depot/+/7008
Tested-by: BuildkiteCI
Autosubmit: j4m3s <james.landrein@gmail.com>
Reviewed-by: tazjin <tazjin@tvl.su>
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When I first read the `README.md` I didn't know what this `mg build`
was. Some grepping around turned up `/tools/magrathea`. Apparently
this thing "helps me build planets". Awesome! Let's tell other
people where to find it. It seems that this tool is (currently)
specific to depot, so people who arrive at depot because of tvix
probably won't know where to find `mg`.
Signed-off-by: Adam Joseph <adam@westernsemico.com>
Change-Id: Icb8c51087fd41b696794516abcfee24a4b3b4a14
Reviewed-on: https://cl.tvl.fyi/c/depot/+/6948
Reviewed-by: tazjin <tazjin@tvl.su>
Tested-by: tazjin <tazjin@tvl.su>
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This commit implements builtins.baseNameOf and adds a test case
eval-okay-basenameof.nix to the test suite.
Signed-off-by: Adam Joseph <adam@westernsemico.com>
Change-Id: Ib8bbafba2ac9ca0e1d3dc5e844167f94890d9fee
Reviewed-on: https://cl.tvl.fyi/c/depot/+/6997
Tested-by: BuildkiteCI
Reviewed-by: grfn <grfn@gws.fyi>
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builtins.parseDrvName should not coerce its argument to a string.
This commit fixes that oversight in my previous commit, and adds an
xfail test to cover this condition.
Thanks to @sterni for noticing this.
Signed-off-by: Adam Joseph <adam@westernsemico.com>
Change-Id: I76bc78f1a82e1e08fe5c787c563a221d55de2639
Reviewed-on: https://cl.tvl.fyi/c/depot/+/6991
Tested-by: BuildkiteCI
Reviewed-by: sterni <sternenseemann@systemli.org>
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This commit adds support for running the "expected failure" tests in
both the nix and tvix test suites.
I have disabled the eval-fail-blackhole.nix test because it gets
stuck running forever.
Signed-off-by: Adam Joseph <adam@westernsemico.com>
Change-Id: Iba75ce6c8f2becab3c834fcfdd9f4fdc5a4bdb9f
Reviewed-on: https://cl.tvl.fyi/c/depot/+/6990
Tested-by: BuildkiteCI
Reviewed-by: tazjin <tazjin@tvl.su>
Reviewed-by: grfn <grfn@gws.fyi>
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cppnix has merged #7149, so let's update our copy of their tests:
https://github.com/NixOS/nix/pull/7149
Signed-off-by: Adam Joseph <adam@westernsemico.com>
Change-Id: I0be3bf9da937abd24102e1997daa2087ecfafd98
Reviewed-on: https://cl.tvl.fyi/c/depot/+/6992
Tested-by: BuildkiteCI
Reviewed-by: tazjin <tazjin@tvl.su>
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This path normalisation business causes runtime panics on WebAssembly
because those operations are unsupported.
Maybe this shouldn't be happening in the compiler anyways, not sure,
but for now this commit adds a workaround based on the target to
disable the normalisation if we're compiling for wasm.
Change-Id: I908a84fbdffc3401f8d443e2c73ec673e9f397ff
Reviewed-on: https://cl.tvl.fyi/c/depot/+/7004
Autosubmit: tazjin <tazjin@tvl.su>
Reviewed-by: sterni <sternenseemann@systemli.org>
Tested-by: BuildkiteCI
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Cppnix immediately absolutizes pathnames at parse time; if you write
`./foo`, it is immediately converted to `$(pwd)/foo` and manipulated
as an absolute path at all times.
To avoid having to introduce filesystem access operations in the
implementation of otherwise-pure builtins, let's guarantee that the
`root_dir` of the VM is always an absolute path.
Signed-off-by: Adam Joseph <adam@westernsemico.com>
Change-Id: I7cbbae2cba4b2716ff3f5ff7c9ce0ad529358c8a
Reviewed-on: https://cl.tvl.fyi/c/depot/+/6995
Reviewed-by: grfn <grfn@gws.fyi>
Tested-by: BuildkiteCI
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Right now we're pretending that the Rust library path_clean does the
same thing that cppnix's canonPath() does. This is not true. It's
close enough for the test suite, but may come back to bite us.
Let's create our own canon_path() function and call that in all the
places where we intend to match the behavior of cppnix's
canonPath(). That way when we fix this we can fix it once, in one
place.
Signed-off-by: Adam Joseph <adam@westernsemico.com>
Change-Id: Ia6f9577f62f49ef352ff9cfa5efdf37c32d31b11
Reviewed-on: https://cl.tvl.fyi/c/depot/+/6993
Tested-by: BuildkiteCI
Reviewed-by: grfn <grfn@gws.fyi>
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On Debian machines (and most FHS distros) /bin is now a symlink to
/usr/bin, which causes this test to fail. Let's use /etc as a
root-relative test case, since it is less likely to be a symlink.
Signed-off-by: Adam Joseph <adam@westernsemico.com>
Change-Id: I1c94de0d2a242394182442fe1c895dc17eb04a4a
Reviewed-on: https://cl.tvl.fyi/c/depot/+/6994
Tested-by: BuildkiteCI
Reviewed-by: grfn <grfn@gws.fyi>
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The nix_tests test suite produces lots of warnings. We can't fix
these, since they are kept in sync with upstream, so there's little
point in cluttering up the console with them every time the tests
are run.
Let's add a clap flag "warnings" and TVIX_WARNINGS environment
variable. The default is "true". The test runner overrides this
default and mutes the warnings.
Signed-off-by: Adam Joseph <adam@westernsemico.com>
Change-Id: I4b065f96fe15838afcca6970491a54e248ae4df7
Reviewed-on: https://cl.tvl.fyi/c/depot/+/6985
Reviewed-by: tazjin <tazjin@tvl.su>
Reviewed-by: grfn <grfn@gws.fyi>
Tested-by: BuildkiteCI
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Signed-off-by: Adam Joseph <adam@westernsemico.com>
Change-Id: I59254a0ac513b3d2a6b2184554358bb6eba2ba99
Reviewed-on: https://cl.tvl.fyi/c/depot/+/6949
Tested-by: BuildkiteCI
Reviewed-by: tazjin <tazjin@tvl.su>
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This commit passes nix_eval_okay_src_tests_nix_tests_eval_okay_versions_nix.
See also: https://github.com/NixOS/nix/pull/7149
Signed-off-by: Adam Joseph <adam@westernsemico.com>
Change-Id: I24605c2a0cd0da434f37f6c518f20693bfa1b799
Reviewed-on: https://cl.tvl.fyi/c/depot/+/6913
Tested-by: BuildkiteCI
Reviewed-by: tazjin <tazjin@tvl.su>
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Since NixString is the Rust type for nix strings, people might
mistake NixPath for the Rust type of nix paths, which it is not.
Let's call it NixSearchPath instead.
Signed-off-by: Adam Joseph <adam@westernsemico.com>
Change-Id: Ib2ea155c4b27cb90d6180a04ea7b951d86607373
Reviewed-on: https://cl.tvl.fyi/c/depot/+/6927
Reviewed-by: kanepyork <rikingcoding@gmail.com>
Tested-by: BuildkiteCI
Reviewed-by: tazjin <tazjin@tvl.su>
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I broke the build.
I didn't understand that before hitting "submit" you need to re-test
your changes on latest HEAD (and that CI doesn't do that for you); I
failed to re-test cl/6912 following the merge of cl/6907.
This commit fixes the build by removing the overlapping instances.
Change-Id: I2a720d2c60cc7103b350f78102a8998f93bac828
Reviewed-on: https://cl.tvl.fyi/c/depot/+/6965
Tested-by: BuildkiteCI
Autosubmit: Adam Joseph <adam@westernsemico.com>
Reviewed-by: tazjin <tazjin@tvl.su>
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Signed-off-by: Adam Joseph <adam@westernsemico.com>
Change-Id: I27615baf4104ab96600708b12a780599a3714bae
Reviewed-on: https://cl.tvl.fyi/c/depot/+/6912
Tested-by: BuildkiteCI
Reviewed-by: tazjin <tazjin@tvl.su>
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Change-Id: I074d9e862fbdd4e78e443cbaf0e77c7ffe825a10
Signed-off-by: Adam Joseph <adam@westernsemico.com>
Reviewed-on: https://cl.tvl.fyi/c/depot/+/6911
Tested-by: BuildkiteCI
Reviewed-by: tazjin <tazjin@tvl.su>
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When investigating discrepancies between foldl' in tvix and C++ Nix,
I discovered that C++ Nix's foldl' doesn't seem to be strict at all.
Since this seemed wrong, I looked into Haskell's foldl' implementation
which doesn't force the list elements (`val` in our code), but the
accumulation value (`res` in our code). You can look at the code here:
https://hackage.haskell.org/package/base-4.17.0.0/docs/src/GHC.List.html#foldl%27
This actually makes a lot of sense: If `res` is not forced after each
application of `op`, we'll end up thunks nested as deeply as the list is
long, potentially taking up a lot of space. This can be limited by
forcing the `res` thunk before applying `op` again (and creating a new
thunk).
I've also PR-ed an equivalent change for C++ Nix at
https://github.com/NixOS/nix/pull/7158. Since this is not merged nor
backported to our Nix 2.3 fork, I've not copied the eval fail test yet,
since it wouldn't when checking our tests against C++ Nix in depot.
Change-Id: I34edf6fc3031fc1485c3e714f2280b4fba8f004b
Reviewed-on: https://cl.tvl.fyi/c/depot/+/6947
Autosubmit: sterni <sternenseemann@systemli.org>
Reviewed-by: grfn <grfn@gws.fyi>
Tested-by: BuildkiteCI
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This *maybe* should do something to check that we don't pass both a file
and an expr, but for now this is useful enough to cut corners (plus
we're probably due for a CLI revamp eventually anyway).
Change-Id: Id44357074150b336b6215ba596cc52d01d037dbd
Reviewed-on: https://cl.tvl.fyi/c/depot/+/6941
Reviewed-by: tazjin <tazjin@tvl.su>
Tested-by: BuildkiteCI
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Change-Id: I28910991a0108436a42ac7bf3458f9180a44154e
Reviewed-on: https://cl.tvl.fyi/c/depot/+/6928
Reviewed-by: Adam Joseph <adam@westernsemico.com>
Reviewed-by: tazjin <tazjin@tvl.su>
Tested-by: BuildkiteCI
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This is currently implemented with a simple println inline, but in the
future we could hook into this via something pluggable on the VM.
Change-Id: Idd9cc3b34aa13d6ebc64c02aade81ecdf439656a
Reviewed-on: https://cl.tvl.fyi/c/depot/+/6938
Autosubmit: grfn <grfn@gws.fyi>
Reviewed-by: tazjin <tazjin@tvl.su>
Tested-by: BuildkiteCI
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