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Change-Id: I758fc4f3b9078de7ca6228a75a4351c3e085c4cf
Reviewed-on: https://cl.tvl.fyi/c/depot/+/6272
Reviewed-by: grfn <grfn@gws.fyi>
Tested-by: BuildkiteCI
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Without this escape, it is possible for Nix to produce escaped
representations which are not literal Nix values again.
This was fixed in upstream Nix in
https://github.com/NixOS/nix/pull/4012 (though only for eval, not in
the REPL) and the updated test is picked from upstream after that commit.
Because we run the C++ Nix tests against our test suite as well, this
also bumps our custom Nix 2.3 to a commit that includes the
cherry-picked fix from the PR above.
Change-Id: I478547ade65f655c606ec46f7143932064192283
Reviewed-on: https://cl.tvl.fyi/c/depot/+/6271
Reviewed-by: grfn <grfn@gws.fyi>
Reviewed-by: sterni <sternenseemann@systemli.org>
Tested-by: BuildkiteCI
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This is a more sensible place for this function to live and makes
upvalue resolution easier down the line.
Change-Id: I48ee39bdcdb4f96a16a327f7015aff60db5b15fb
Reviewed-on: https://cl.tvl.fyi/c/depot/+/6270
Reviewed-by: grfn <grfn@gws.fyi>
Tested-by: BuildkiteCI
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This struct will carry the upvalue machinery in addition to the lambda
itself. For now, all lambdas are wrapped in closures (though
technically analysis of the environment can later remove innermost
Closure wrapper, but this optimisation may not be worth it).
Change-Id: If2b68549ec1ea4ab838fdc47a2181c694ac937f2
Reviewed-on: https://cl.tvl.fyi/c/depot/+/6269
Reviewed-by: grfn <grfn@gws.fyi>
Tested-by: BuildkiteCI
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Primarily to make sure we build benchmark targets, and avoid breaking
them
Change-Id: I0c43f4cf99ddfd38e7545ef2d8276ef6b240a1e8
Reviewed-on: https://cl.tvl.fyi/c/depot/+/6285
Tested-by: BuildkiteCI
Reviewed-by: tazjin <tazjin@tvl.su>
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Interpret was updated to take an optional path arg in
6fe5e2d75 (feat(tvix/eval): resolve relative path literals, 2022-08-12),
but since benchmarks aren't building in CI the resulting breakage of
benchmarks was missed.
Change-Id: I8a93f1b25ae62e2d032fafc153d91977c6466712
Reviewed-on: https://cl.tvl.fyi/c/depot/+/6284
Reviewed-by: tazjin <tazjin@tvl.su>
Tested-by: BuildkiteCI
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Change-Id: I76157f9cf1369cd17506de1b1ded1a4fd06f004a
Reviewed-on: https://cl.tvl.fyi/c/depot/+/6268
Reviewed-by: grfn <grfn@gws.fyi>
Tested-by: BuildkiteCI
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The blackhole allocation is not going to be cheaper than cloning this.
Change-Id: Id3ad44812decb4392830be06645e67bb0a982b96
Reviewed-on: https://cl.tvl.fyi/c/depot/+/6267
Reviewed-by: grfn <grfn@gws.fyi>
Tested-by: BuildkiteCI
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Compilation of `let`-expressions is going to become a lot more
complicated due to attempts to avoid thunking when encountering
internal references, so this is just being moved out of the way.
Change-Id: Iecfa4b13d14532e21c2540e6561b4235ce29736a
Reviewed-on: https://cl.tvl.fyi/c/depot/+/6266
Reviewed-by: grfn <grfn@gws.fyi>
Tested-by: BuildkiteCI
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This is just for dev comfort, it's not going to be useful for the
final version.
Change-Id: I05fdd590097a61085ed641810655d9ddaf8f3511
Reviewed-on: https://cl.tvl.fyi/c/depot/+/6265
Reviewed-by: sterni <sternenseemann@systemli.org>
Tested-by: BuildkiteCI
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In conditions where no dynamic identifiers exist in a scope,
inheriting is usually a no-op - *unless* the identifier is not
statically known and the scope has a non-empty `with`-stack.
Change-Id: Iff4138d9cd4c56e844bc574203708dacc11c3f73
Reviewed-on: https://cl.tvl.fyi/c/depot/+/6264
Reviewed-by: sterni <sternenseemann@systemli.org>
Tested-by: BuildkiteCI
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This avoids copying around the value more than needed.
Change-Id: I35949d16dad7fb8f76e0f641eaccf48322144777
Reviewed-on: https://cl.tvl.fyi/c/depot/+/6263
Tested-by: BuildkiteCI
Reviewed-by: sterni <sternenseemann@systemli.org>
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Change-Id: Idf92ac82438fbfcf7b2f6e058830e4744637d8c6
Reviewed-on: https://cl.tvl.fyi/c/depot/+/6262
Tested-by: BuildkiteCI
Reviewed-by: sterni <sternenseemann@systemli.org>
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Change-Id: Ibc5039b444fadf6f9e5cd9132fcd825a871cee06
Reviewed-on: https://cl.tvl.fyi/c/depot/+/6261
Tested-by: BuildkiteCI
Reviewed-by: sterni <sternenseemann@systemli.org>
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Change-Id: I70d7d837beaaed7e10cdc7577d96130f9e1b6d39
Reviewed-on: https://cl.tvl.fyi/c/depot/+/6260
Tested-by: BuildkiteCI
Reviewed-by: sterni <sternenseemann@systemli.org>
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These do essentially the same, but return different error variants as
upstream Nix considers `throw` to be (sometimes) catchable.
Change-Id: I1a9ea84567d46fb37287dbf3f3f67052f9382cca
Reviewed-on: https://cl.tvl.fyi/c/depot/+/6259
Tested-by: BuildkiteCI
Reviewed-by: sterni <sternenseemann@systemli.org>
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The set of things that can leak out of `builtins` into the global
scope is statically known (it is what Nix 2.3 leaks there,
essentially).
This is a mild change over the previous mechanism, where instead at
the point where the `builtins` set is constructed we "lift" the
globals out of there (if they exist).
This way users will still eventually be able to add additional
builtins, HOWEVER they will not be able to leak them into the global
scope.
Note that upstream Nix technically leaks _all_ builtins into the
global scope using the `__*` prefix, but we are trying to avoid this
in Tvix if it is not required in nixpkgs.
Change-Id: Ie9dec2ce33740134f3b2464eba3749f421dd5953
Reviewed-on: https://cl.tvl.fyi/c/depot/+/6258
Tested-by: BuildkiteCI
Reviewed-by: sterni <sternenseemann@systemli.org>
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Change-Id: I7dae6978c2a4548382d7fa059b20ccdf35d2cf7f
Reviewed-on: https://cl.tvl.fyi/c/depot/+/6257
Tested-by: BuildkiteCI
Reviewed-by: sterni <sternenseemann@systemli.org>
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Change-Id: Iae251d41b4ac6b77df56078a954ec3e33b7f9ccf
Reviewed-on: https://cl.tvl.fyi/c/depot/+/6256
Tested-by: BuildkiteCI
Reviewed-by: sterni <sternenseemann@systemli.org>
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Change-Id: I91f54778b8a17f3448664c21308de656b4b04b3e
Reviewed-on: https://cl.tvl.fyi/c/depot/+/6255
Tested-by: BuildkiteCI
Reviewed-by: sterni <sternenseemann@systemli.org>
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Adds a new builtins module in which builtins can be constructed. The
functions in this module should return a correctly structured value to
be passed to the compiler's `globals`.
This is wired up all the way to the compiler with an example
`toString` builtin, available as a global. Note that this does not yet
actually behave like the real toString, which has some differences
from `Display`.
Change-Id: Ibb5f6fbe6207782fdf2434435567fc1bd80039a5
Reviewed-on: https://cl.tvl.fyi/c/depot/+/6254
Tested-by: BuildkiteCI
Reviewed-by: sterni <sternenseemann@systemli.org>
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Previously, the tokens that could poison a scope (`true`, `false`,
`null`) had individual fields in the scope to track whether or not
they were poisoned.
This commit sets up new machinery that instead tracks scope poisoning
dynamically using a HashMap, and which makes it possible to introduce
additional tokens to the top-level ("global") scope that are directly
resolved by the compiler by passing a map of runtime values to be
used.
With this solution, the compiler now contains all machinery required
for wiring up builtins resolution.
The set of builtins to be exposed at runtime must, however, be
constructed *outside* of the compiler and passed in. Everything is
prepared for this, but it is not yet wired up (so the only existing
builtins are the ones we already had before).
Note that this technically opens up an optimisation potential when
compiling selection operations, where the attribute set being selected
from is `builtins`. The compiler could directly resolve the builtins
and place the right values on the stack.
Change-Id: Ia7dad3c2a98703e7ea0c6ace1a722d57cc70a65c
Reviewed-on: https://cl.tvl.fyi/c/depot/+/6253
Tested-by: BuildkiteCI
Reviewed-by: sterni <sternenseemann@systemli.org>
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Change-Id: Ie187f3317046c6c9e59852d4a128f25ceed99309
Reviewed-on: https://cl.tvl.fyi/c/depot/+/6252
Tested-by: BuildkiteCI
Reviewed-by: sterni <sternenseemann@systemli.org>
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Builtins are represented as a Rust function pointer that accepts a
vector of arguments, which represents variable arity builtins.
Change-Id: Ibab7e662a646caf1172695d876d2f55e187c03dd
Reviewed-on: https://cl.tvl.fyi/c/depot/+/6251
Tested-by: BuildkiteCI
Reviewed-by: grfn <grfn@gws.fyi>
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Change-Id: I1b9230601895a1f09ef1a8037201147020b85f36
Reviewed-on: https://cl.tvl.fyi/c/depot/+/6250
Reviewed-by: sterni <sternenseemann@systemli.org>
Reviewed-by: grfn <grfn@gws.fyi>
Tested-by: BuildkiteCI
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Nix functions always have a single argument and we do not yet make
efforts to optimise this in Tvix for known multi-argument functions
being directly applied.
For this reason, the call instruction is fairly simple and just calls
out to construct a new call frame.
Note that the logic for terminating the run loop has moved to the top
of the dispatch; this is because the loop run needs to be skipped if
the call frame for the current lambda has just been dropped.
Change-Id: I259bc07e19c1e55cd0a65207fa8105b23052b967
Reviewed-on: https://cl.tvl.fyi/c/depot/+/6249
Reviewed-by: sterni <sternenseemann@systemli.org>
Reviewed-by: grfn <grfn@gws.fyi>
Tested-by: BuildkiteCI
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Change-Id: Ia7ff572af90ae379b23bbd0f5215cd13a4dc0ab5
Reviewed-on: https://cl.tvl.fyi/c/depot/+/6248
Reviewed-by: grfn <grfn@gws.fyi>
Reviewed-by: sterni <sternenseemann@systemli.org>
Tested-by: BuildkiteCI
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Compiles lambda definitions of the simple form (i.e. without formals
arguments) and emits them as constants like any other value.
This does not yet implement actually invoking these functions in the VM.
Change-Id: Ie1e0a13220b68c1728be229b875f0992e685c5ef
Reviewed-on: https://cl.tvl.fyi/c/depot/+/6247
Tested-by: BuildkiteCI
Reviewed-by: grfn <grfn@gws.fyi>
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This structure carries context about the lambda currently being
compiled (which may well be the top-level lambda of an input AST).
Using the indirection helpers in the compiler, things like the scope,
code and constants of the function being compiled are now taken from
the current lambda context instead.
Change-Id: If5f864d826c2e72855cee4b728ea1830e9b5ac06
Reviewed-on: https://cl.tvl.fyi/c/depot/+/6246
Tested-by: BuildkiteCI
Reviewed-by: grfn <grfn@gws.fyi>
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Change-Id: I7488087d95c1b3fb7f70fc29af0d5b0d0a25a428
Reviewed-on: https://cl.tvl.fyi/c/depot/+/6245
Tested-by: BuildkiteCI
Reviewed-by: grfn <grfn@gws.fyi>
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This wires up most of the machinery for executing different call
frames inside of the VM and stuffs the top-level lambda which the
compiler outputs in there, as well.
Change-Id: Ib6201b3e3be1af96a4d195f6eb147f452860ffc3
Reviewed-on: https://cl.tvl.fyi/c/depot/+/6242
Tested-by: BuildkiteCI
Reviewed-by: grfn <grfn@gws.fyi>
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This is going to carry the data for a function invocation inside of
the VM.
Change-Id: I86664563a7e35697a64294acd37ffde037fbd32d
Reviewed-on: https://cl.tvl.fyi/c/depot/+/6241
Tested-by: BuildkiteCI
Reviewed-by: grfn <grfn@gws.fyi>
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Changes the internal compiler plumbing to not just return a chunk of
code, but the same chunk wrapped inside of a lambda value.
This is one more step towards compiling runtime lambdas.
Change-Id: If0035f8e65a2970c5ae123fc068a2396e1d8fd72
Reviewed-on: https://cl.tvl.fyi/c/depot/+/6240
Tested-by: BuildkiteCI
Reviewed-by: grfn <grfn@gws.fyi>
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With these indirections in place it becomes easier to change internals
of the compiler when introducing functions, which need the compiler to
be able to target different code chunks.
Change-Id: I4eb11572a93c140b1d059ba0a5af905756745d65
Reviewed-on: https://cl.tvl.fyi/c/depot/+/6239
Tested-by: BuildkiteCI
Reviewed-by: grfn <grfn@gws.fyi>
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Change-Id: Ifa9766f5ffeff99e926936bafd697e885e733b78
Reviewed-on: https://cl.tvl.fyi/c/depot/+/6238
Tested-by: BuildkiteCI
Reviewed-by: grfn <grfn@gws.fyi>
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Change-Id: I6e876a8f4d062297abae812b14ed8ec17a502f2c
Reviewed-on: https://cl.tvl.fyi/c/depot/+/6237
Tested-by: BuildkiteCI
Reviewed-by: grfn <grfn@gws.fyi>
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Instead of exiting the compiler at the first sight of an error,
skip any erroneous nodes and continue compiling, collecting more
errors along the way.
This paves the way for nicer error reporting in which multiple errors
can be reported at once, avoiding situations in which users are
hunting a fault error-by-error and possibly getting distracted by
less useful output.
Change-Id: I80c9a87272e33a31297167ae2eb2706a46adf15a
Reviewed-on: https://cl.tvl.fyi/c/depot/+/6236
Tested-by: BuildkiteCI
Reviewed-by: grfn <grfn@gws.fyi>
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This starts paving the way for nicer, source-code based error
reporting.
Right now the code paths in the VM do not emit annotated errors, as we
do not yet preserve that structure from the compiler. However, error
emitting code paths in the compiler have been amended to include known
nodes.
Change-Id: I1b74410ffd891c40cd913361bd73c4336ec8aa5b
Reviewed-on: https://cl.tvl.fyi/c/depot/+/6235
Tested-by: BuildkiteCI
Reviewed-by: grfn <grfn@gws.fyi>
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Change-Id: I2d98dbb7274d07985f64e7cc8944e316bf42e1bf
Reviewed-on: https://cl.tvl.fyi/c/depot/+/6234
Reviewed-by: sterni <sternenseemann@systemli.org>
Tested-by: BuildkiteCI
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In this commit, the string interpolation parsing is identical to
nixpkgs which makes some of the upstream Nix tests for
interpolation-related weirdness pass.
Change-Id: I3a295cfdc404c32228a54846e6efd3c0dcee5842
Reviewed-on: https://cl.tvl.fyi/c/depot/+/6233
Reviewed-by: sterni <sternenseemann@systemli.org>
Tested-by: BuildkiteCI
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These were missing an additional level of escaping, silly oversight
caught by an upstream test.
Change-Id: I0312084475e4b88c83945614e9aa5b34c6bc3ec2
Reviewed-on: https://cl.tvl.fyi/c/depot/+/6232
Reviewed-by: sterni <sternenseemann@systemli.org>
Reviewed-by: grfn <grfn@gws.fyi>
Tested-by: BuildkiteCI
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Since the latest published version of rnix-parser on crates.io, the
crate has undergone major changes which are only available in the git
repository at the moment. This commit updates the compiler to this
newer version of rnix.
Most notably, the entire AST provided by rnix is now wrapped in the
AST type system. As a result of this traversal is much nicer in many
places, especially for things like nested attribute selection.
There are a handful of smaller features missing for full feature
parity with the previous version, especially handling of path
literals, but PRs for these already exist in rnix-parser.
Change-Id: Icde6d393067976549492b7d89c4cc49e5e575fc7
Reviewed-on: https://cl.tvl.fyi/c/depot/+/6231
Reviewed-by: sterni <sternenseemann@systemli.org>
Tested-by: BuildkiteCI
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This implements `assert`, which evaluates an expression and aborts
evaluation if the value is not `true`.
At this point we should introduce eval-failed-* tests; probably
asserting against some representation of the error enum?
Change-Id: If54c8f616d89b829c1860a4835dde60a2cd70d7a
Reviewed-on: https://cl.tvl.fyi/c/depot/+/6230
Reviewed-by: grfn <grfn@gws.fyi>
Reviewed-by: sterni <sternenseemann@systemli.org>
Tested-by: BuildkiteCI
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This is supposed to help with resource wasting in situations when
multiple dynamic steps depend on a failing derivation. Cost of
failure currently is `C = T * D` where:
- T -> time to compile the failing derivation
- D -> amount of CI targets depending on a failing derivation
Switching to `Fail Fast` limits it to just T (time of a single
failure). Which helps a lot, especially while upgrading nixpkgs.
Fast fail at this moment is in preview, so to enable it:
- Enable `Fail Fast` feature at pipeline or organization level
- Set `cancelOnBuildFailing` parameter to true for `mkPipeline`
Change-Id: I4373a46633522d21e94cfa8bac35243b4eeb0b9c
Reviewed-on: https://cl.tvl.fyi/c/depot/+/6243
Tested-by: BuildkiteCI
Reviewed-by: tazjin <tazjin@tvl.su>
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Change-Id: I509ea7949990e8c652133bd9ef21243a41f58e44
Reviewed-on: https://cl.tvl.fyi/c/depot/+/6202
Reviewed-by: Profpatsch <mail@profpatsch.de>
Autosubmit: Profpatsch <mail@profpatsch.de>
Tested-by: BuildkiteCI
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This makes for much more readable output especially when long strings
are involved.
Change-Id: I43dd73a0480535d7181a760788c42883a9b083f8
Reviewed-on: https://cl.tvl.fyi/c/depot/+/6229
Tested-by: BuildkiteCI
Reviewed-by: sterni <sternenseemann@systemli.org>
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`push_local`/`push_phantom` were worse names because they sound like
the value itself is being pushed, where in actuality it is just being
declared to the compiler.
Change-Id: Ibfda5c4c8e47d5d3262bfe005b0f1f84908a117e
Reviewed-on: https://cl.tvl.fyi/c/depot/+/6228
Tested-by: BuildkiteCI
Reviewed-by: sterni <sternenseemann@systemli.org>
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These tokens are optionally parsed as identifiers by Nix, which means
that within any scopes that resolve them the compiler needs to track
whether they have been overridden to know whether to emit the literal
instructions or resolve a variable.
This is implemented by a new concept of "scope poisoning", where the
compiler's scope structure tracks whether or not any builtin
identifiers have been overridden.
Change-Id: I3ab711146e229f843f6e1f0343385382ee0aecb6
Reviewed-on: https://cl.tvl.fyi/c/depot/+/6227
Tested-by: BuildkiteCI
Reviewed-by: sterni <sternenseemann@systemli.org>
Reviewed-by: grfn <grfn@gws.fyi>
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While full recursion through thunking is not available, there are
actually incorrect behaviours introduced by declaring before
binding (example in the newly introduced test).
This commit simplifies the implementation to avoid this issue, and
also because I intend to explore a bit more how far we can get in non
left-to-right bindings *without* introducing thunks immediately.
Change-Id: I21fd3007ac3946570639772d7d624d70bd209958
Reviewed-on: https://cl.tvl.fyi/c/depot/+/6226
Tested-by: BuildkiteCI
Reviewed-by: sterni <sternenseemann@systemli.org>
Reviewed-by: grfn <grfn@gws.fyi>
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Change-Id: I94664090e7a2b060dfbe21c1eeb859fb31e417b0
Reviewed-on: https://cl.tvl.fyi/c/depot/+/6225
Tested-by: BuildkiteCI
Reviewed-by: sterni <sternenseemann@systemli.org>
Reviewed-by: grfn <grfn@gws.fyi>
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