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This logic was duplicated between the two rnix types before, but more
crucially - it is also needed for correctly displaying the text ranges
contained in syntax errors.
Change-Id: Ifc6a521de1594d6ced9cba6274f1931df99b6634
Reviewed-on: https://cl.tvl.fyi/c/depot/+/6870
Tested-by: BuildkiteCI
Reviewed-by: grfn <grfn@gws.fyi>
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This is also useful for error-handling related logic, outside of just
the compiler module.
Change-Id: I5c386e2b4c31cda0a0209b31136ca07f00e39e45
Reviewed-on: https://cl.tvl.fyi/c/depot/+/6869
Tested-by: BuildkiteCI
Reviewed-by: grfn <grfn@gws.fyi>
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This enables the use of string paths (and, in the future,
derivations), as long as their string values represent an absolute
path.
Change-Id: I4b198efeb70415ed52f58bd1da6fa79a24dad14c
Reviewed-on: https://cl.tvl.fyi/c/depot/+/6866
Reviewed-by: sterni <sternenseemann@systemli.org>
Tested-by: BuildkiteCI
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This lets the VM emit warnings when it encounters situations that
should only be warned about at runtime.
For starters, this is used to pass through compilation warnings that
come up when `import` is used.
Change-Id: I0c4bc8c534d699999887c430d93629fadfa662c4
Reviewed-on: https://cl.tvl.fyi/c/depot/+/6868
Reviewed-by: sterni <sternenseemann@systemli.org>
Tested-by: BuildkiteCI
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Adding `import` to builtins causes causes a bootstrap cycle because
the `import` builtin needs to be initialised with the set of globals
before being inserted into the globals, which also must contain
itself.
To break out of the cycle this hack wraps the builtins passed to the
compiler in an `Rc` (probably sensible anyways, as they will end up
getting cloned a bunch), containing a RefCell which gives us mutable
access to the builtins.
This opens up a potentially dangerous footgun in which we could mutate
the builtins at runtime leading to different compiler invocations
seeing different builtins, so it'd be nice to have some kind of
"finalised" status for them or some such, but I'm not sure how to
represent that atm.
Change-Id: I25f8d4d2a7e8472d401c8ba2f4bbf9d86ab2abcb
Reviewed-on: https://cl.tvl.fyi/c/depot/+/6867
Tested-by: BuildkiteCI
Reviewed-by: grfn <grfn@gws.fyi>
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This adds an initial working version of builtins.import which
encapsulates the entire functionality of `import` within the builtin
itself, without requiring any changes in the compiler or VM.
The key insight that enables this is that we can simply return a Thunk
from `import` that is constructed from the output of running the
compiler and - ta-da! - no other component needs to know about it.
A couple of notes:
* builtins.import needs to capture variables like the SourceCode
structure. This means it can not currently be constructed the same
way as other builtins and has special handling, which leaks out to
`eval.rs`. I have postponed dealing with that until we have this
working a bit more.
* the `globals` are not yet passed through
* the error representation for the new variants is absolutely not done
yet, we probably want to switch to something that supports
cause-chaining now (like miette)
* there is no mechanism for emitting warnings at runtime; we need to
add that
Change-Id: I3117a7ae3ff2432bf44f5ff05ad35f47faca31d5
Reviewed-on: https://cl.tvl.fyi/c/depot/+/6857
Reviewed-by: sterni <sternenseemann@systemli.org>
Reviewed-by: wpcarro <wpcarro@gmail.com>
Tested-by: BuildkiteCI
Reviewed-by: grfn <grfn@gws.fyi>
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For some upcoming builtins (notably, import) we need to capture
arguments in the builtin's implementation.
To allow this, we can no longer use function pointers for builtins,
but must use a reference-counted closure object instead.
Unfortunately this adds an extra pointer operation to every builtin
call. We should benchmark this later against having a split builtin
representation.
Change-Id: I109d98d0e25998870542f47573eb1ec2e546f2a2
Reviewed-on: https://cl.tvl.fyi/c/depot/+/6856
Tested-by: BuildkiteCI
Reviewed-by: grfn <grfn@gws.fyi>
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nixpkgs has hardcoded references to Nix versions, we need to provide
it with something that looks like a Nix version while actually being a
Tvix version.
For now, we do this by stealing a trick out of the browser book and
constructing a version that looks like a Nix version to Nix, but like
a Tvix version to people who know what they are looking for.
Nevermind that we don't actually have any kind of versioning for
Tvix (yet?), other than depot revisions.
Change-Id: I7ce8079dd8164a2079891d38e707f09a45f0bbc1
Reviewed-on: https://cl.tvl.fyi/c/depot/+/6858
Reviewed-by: sterni <sternenseemann@systemli.org>
Tested-by: BuildkiteCI
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This type hides away the lower-level handling of most codemap data
structures, especially to library consumers (see corresponding changes
in tvixbolt).
This will help with implement `import` by giving us central control
over how the codemap works.
Change-Id: Ifcea36776879725871b30c518aeb96ab5fda035a
Reviewed-on: https://cl.tvl.fyi/c/depot/+/6855
Tested-by: BuildkiteCI
Reviewed-by: wpcarro <wpcarro@gmail.com>
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There's basically nothing that needs *ownership* of an AST
node (which is just a little box full of references to other things
anyways), so we can thread this through as references all the way.
Change-Id: I35a1348a50c0e8e07d51dfc18847829379166fbf
Reviewed-on: https://cl.tvl.fyi/c/depot/+/6853
Tested-by: BuildkiteCI
Reviewed-by: grfn <grfn@gws.fyi>
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There are actually two different types of observers, the ones that
observe the compiler (and emitted chunks from different kinds of
expressions), and the ones that trace runtime execution.
Use of the NoOpObserver is unchanged, it simply implements both
traits.
Change-Id: I4277b82674c259ec55238a0de3bb1cdf5e21a258
Reviewed-on: https://cl.tvl.fyi/c/depot/+/6852
Tested-by: BuildkiteCI
Reviewed-by: grfn <grfn@gws.fyi>
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Change-Id: I8d5652d797b012bc3d5248ca2b2d0c87572dbf2e
Reviewed-on: https://cl.tvl.fyi/c/depot/+/6851
Tested-by: BuildkiteCI
Reviewed-by: wpcarro <wpcarro@gmail.com>
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Until we can display a chained representatino of errors in thunks, it
is most useful to forward the error code from the innermost error to
the user.
Change-Id: I8d67254d52313be40387f080e57966c001e0d51c
Reviewed-on: https://cl.tvl.fyi/c/depot/+/6854
Reviewed-by: sterni <sternenseemann@systemli.org>
Autosubmit: tazjin <tazjin@tvl.su>
Tested-by: BuildkiteCI
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Returns time since epoch in seconds.
This has a slight behaviour difference from Nix, in that we don't pin
the time between REPL entries (Nix pins it for the program lifetime),
but this is probably inconsequential as long as it is pinned during an
evaluation.
Change-Id: I010c02e93097a209d8ad69e278397c7e30e54c86
Reviewed-on: https://cl.tvl.fyi/c/depot/+/6846
Tested-by: BuildkiteCI
Reviewed-by: grfn <grfn@gws.fyi>
Reviewed-by: wpcarro <wpcarro@gmail.com>
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Allows impure builtins that have a different shape than a Rust
function pointer; specifically this is required for
builtins.currentTime which does not work in WASM.
Change-Id: I1362d8eeafe770ce4d1c5ebe4d119aeb0abb5c9b
Reviewed-on: https://cl.tvl.fyi/c/depot/+/6849
Reviewed-by: sterni <sternenseemann@systemli.org>
Tested-by: BuildkiteCI
Reviewed-by: grfn <grfn@gws.fyi>
Reviewed-by: wpcarro <wpcarro@gmail.com>
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Change-Id: I640ee20e7c0a68c4e024a577e429fed9b3a49ece
Reviewed-on: https://cl.tvl.fyi/c/depot/+/6845
Tested-by: BuildkiteCI
Reviewed-by: sterni <sternenseemann@systemli.org>
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Change-Id: I19ec2b2194681efd73041f4aa1e5f2c893e839c2
Reviewed-on: https://cl.tvl.fyi/c/depot/+/6844
Tested-by: BuildkiteCI
Reviewed-by: sterni <sternenseemann@systemli.org>
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Concatenates (but not flattens) a list of lists.
Change-Id: I692e0b3e7b5a5ff93d5768d3a27849b432ec5747
Reviewed-on: https://cl.tvl.fyi/c/depot/+/6843
Autosubmit: tazjin <tazjin@tvl.su>
Reviewed-by: sterni <sternenseemann@systemli.org>
Tested-by: BuildkiteCI
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This is the same code as before, just moved into a trait impl to gain
access to stuff that needs IntoIterator
Change-Id: Iff9375cd05593dd2681fa85ccc7f4554bf944a02
Reviewed-on: https://cl.tvl.fyi/c/depot/+/6842
Autosubmit: tazjin <tazjin@tvl.su>
Reviewed-by: sterni <sternenseemann@systemli.org>
Tested-by: BuildkiteCI
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This can actually legitimately be emitted by the compiler currently
when compiling formals with default values. See the scope6 test from
the Nix test suite for an example.
We should restructure this slightly to be able to reintroduce a
runtime error here in case something was compiled incorrectly.
Change-Id: Ib81f0f58ae0e850db9fbc459458b7bd0d3ac6f23
Reviewed-on: https://cl.tvl.fyi/c/depot/+/6841
Autosubmit: tazjin <tazjin@tvl.su>
Reviewed-by: sterni <sternenseemann@systemli.org>
Tested-by: BuildkiteCI
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This implements __functor calling in situations where `OpTailCall` is
used, but not yet for `OpCall`.
For some reason I have not yet figured out, this same implementation
does not work in call_value, which means that it also doesn't yet work
in builtins that apply functions.
Change-Id: I378f9065ac53d4c05166a7d0151acb1f55c91579
Reviewed-on: https://cl.tvl.fyi/c/depot/+/6826
Autosubmit: tazjin <tazjin@tvl.su>
Reviewed-by: sterni <sternenseemann@systemli.org>
Tested-by: BuildkiteCI
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Add a new derivation target to the passthru of tvix.eval that builds the
benchmark binaries, *and* copies them to the outupts of the derivation
via the (somewhat arcane) `copyBinsFilter` jq script arg to naersk. This
is a bit annoying because (as far as I can tell) the derivations
returned by naersk aren't directly overridable, so we have to explicitly
fixpoint the attrs we're passing.
Also, since this is now a separate target to build the benchmarks, we
can remove `--all-targets` from the build of `tvix-eval` itself since
that was only added to build benchmarks in CI, and make
regular (non-benchmark) builds a bit faster.
Change-Id: I136b8526790545e93b1ae666abaefb51cbbee390
Reviewed-on: https://cl.tvl.fyi/c/depot/+/6847
Autosubmit: grfn <grfn@gws.fyi>
Tested-by: BuildkiteCI
Reviewed-by: sterni <sternenseemann@systemli.org>
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The idea is that we can keep track of the more unexpected behavior,
behavior that maybe should not be a thing at all and behavior we are not
sure about yet.
Change-Id: I70933f00af1230a7ab9d30e917b61199fe571caf
Reviewed-on: https://cl.tvl.fyi/c/depot/+/6803
Tested-by: BuildkiteCI
Reviewed-by: tazjin <tazjin@tvl.su>
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This function previously kept a borrow in the form of the
`Thunk::value` result alive while performing arbitrary actions in the
VM, which caused a borrowing error in the test case attached.
The `Ref` value must never be used in cases where control flow is
passed to other parts of the VM.
Change-Id: I41d10aa1882a2166614b670e8ba77aab0e67deca
Reviewed-on: https://cl.tvl.fyi/c/depot/+/6825
Reviewed-by: grfn <grfn@gws.fyi>
Reviewed-by: sterni <sternenseemann@systemli.org>
Tested-by: BuildkiteCI
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Change-Id: Icdc41ae383cd7cd1531c65c97d955bc59a56489a
Reviewed-on: https://cl.tvl.fyi/c/depot/+/6809
Reviewed-by: grfn <grfn@gws.fyi>
Reviewed-by: sterni <sternenseemann@systemli.org>
Tested-by: BuildkiteCI
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Change-Id: I65e31e9173e4f5bba19cc4e3d45eb4f8bf91b424
Reviewed-on: https://cl.tvl.fyi/c/depot/+/6808
Reviewed-by: grfn <grfn@gws.fyi>
Reviewed-by: sterni <sternenseemann@systemli.org>
Tested-by: BuildkiteCI
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Change-Id: Id25cde5a6562e1598dcbbf7945ecdfacac5faed7
Reviewed-on: https://cl.tvl.fyi/c/depot/+/6807
Reviewed-by: grfn <grfn@gws.fyi>
Reviewed-by: sterni <sternenseemann@systemli.org>
Tested-by: BuildkiteCI
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This finishes up the implementation of nested keys after the key
insight that the nesting level does not need to be tracked, and
instead the attribute iterator can simply be retained inside the
structures as is (in an advanced state).
With this implementation, when encountering a nested key, the Tvix
compiler will first analyse whether there is already a matching
binding that can be merged (i.e. a binding that is a literal attribute
set), and perform the merge, or otherwise create a new recursive set
of bindings in which the entry is inserted with the path iterator
advanced beyond the first name component.
With this, all the logic simply applies recursively until there are no
more nested bindings (i.e. until all iterators are "empty").
Note that this has one (potentially insignificant) deviation from Nix
currently: If a non-mergable value is supplied (e.g. `a.b = 1; a =
2;`), Tvix will emit a *runtime* error (whereas it is *parse* time in
Nix) as the branch which could statically analyse this is currently
unreachable. There's a TODO for this, so we can fix it up later.
Change-Id: I53df70e09614ff4281a70b80eac7da3beca12da9
Reviewed-on: https://cl.tvl.fyi/c/depot/+/6806
Reviewed-by: sterni <sternenseemann@systemli.org>
Tested-by: BuildkiteCI
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Change-Id: Id43dbd06aef14cf01b4901d9b3668d790cd2b5ae
Reviewed-on: https://cl.tvl.fyi/c/depot/+/6805
Tested-by: BuildkiteCI
Reviewed-by: grfn <grfn@gws.fyi>
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This is actually quite useless, as we can just pass
`AstChildren<ast::Attr>` around after partially consuming it.
Change-Id: If0aefa2b53fc801fced1ae0709bff93966bf19f8
Reviewed-on: https://cl.tvl.fyi/c/depot/+/6804
Tested-by: BuildkiteCI
Reviewed-by: grfn <grfn@gws.fyi>
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When encountering a nested binding for the first time, cleanly flip
the representation to `Binding::Set` in `Binding::merge` before
proceeding with the actual merge.
This reduces the number of points where we have to deal with the (soon
to be slightly more complex) construction of the nested binding
representation.
Change-Id: Ifd43aac7b59ebd15a72c3ec512386a5bcf26ec13
Reviewed-on: https://cl.tvl.fyi/c/depot/+/6802
Tested-by: BuildkiteCI
Reviewed-by: sterni <sternenseemann@systemli.org>
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This adds the scaffolding required for tracking the nesting level (and
appropriately skipping the correct amount of attrpath entries when
inserting nested sets).
In order for all of this to work correctly, we can no longer track
`AttrpathValue` directly in the entries vector as rnix does not allow
us to construct values of that type - so instead we have to track its
inner components.
Change-Id: Icb18e105586bf6c247c2e66c302cde5609ad9789
Reviewed-on: https://cl.tvl.fyi/c/depot/+/6801
Tested-by: BuildkiteCI
Reviewed-by: sterni <sternenseemann@systemli.org>
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This is a significant step towards correctly implemented nested
bindings. All attribute sets defined within the same binding scope
will now be merged as in Nix, if they use the same key.
Change-Id: I13e056693d5e73192280043c6dd93b47d1306ed6
Reviewed-on: https://cl.tvl.fyi/c/depot/+/6800
Tested-by: BuildkiteCI
Reviewed-by: sterni <sternenseemann@systemli.org>
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Change-Id: Ic5e6d1bf2625c33938360affb0d1a7c922af11bf
Reviewed-on: https://cl.tvl.fyi/c/depot/+/6799
Tested-by: BuildkiteCI
Reviewed-by: sterni <sternenseemann@systemli.org>
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This sets up the required logic for finding and merging attribute sets
into nested bindings if they exist. This is absolutely not complete
yet and can, at this commit, probably cause undefined runtime
behaviour if nested attributes are specified.
The basic idea is that a new helper function on the `TrackedBindings`
struct is called with each encountered attribute and determines
whether the new entry can be merged into an existing attribute or not.
Right now the only effect this has in practice is that a new error
becomes available if somebody attempts to cause a merge into an
inherited key.
Change-Id: Id010df3605055eb1ad7fa65241055889dd21bab0
Reviewed-on: https://cl.tvl.fyi/c/depot/+/6798
Tested-by: BuildkiteCI
Reviewed-by: sterni <sternenseemann@systemli.org>
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This needs to move here so that we can reuse compile_bindings for the
nested attribute sets we're about to start constructing.
Change-Id: Ie83f52f7e1d128886e96a1da47792211fa826f21
Reviewed-on: https://cl.tvl.fyi/c/depot/+/6796
Reviewed-by: sterni <sternenseemann@systemli.org>
Tested-by: BuildkiteCI
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This struct will be the key to correctly compiling nested bindings, by
having insertions flow through some logic that will attempt to bind
attribute-set-like things when encountering them.
Change-Id: I8b5b20798de60688f3b6dc4526a460ebb2079f6e
Reviewed-on: https://cl.tvl.fyi/c/depot/+/6795
Reviewed-by: sterni <sternenseemann@systemli.org>
Tested-by: BuildkiteCI
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Change-Id: Iff18d0f84ba2b7a4194797e6c52c55b1c37e419c
Reviewed-on: https://cl.tvl.fyi/c/depot/+/6794
Reviewed-by: sterni <sternenseemann@systemli.org>
Tested-by: BuildkiteCI
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Change-Id: I28d6af8cb408f8427a75d30b9120aaa809a1ea40
Reviewed-on: https://cl.tvl.fyi/c/depot/+/6784
Reviewed-by: sterni <sternenseemann@systemli.org>
Tested-by: BuildkiteCI
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This implementation, which only ever worked for non-recursive
attribute sets, is no longer needed and thus removed here.
We have a new implementation of these nested keys coming up instead.
Change-Id: I0c2875154026a4f5f6e0aa038e465f54444bf721
Reviewed-on: https://cl.tvl.fyi/c/depot/+/6783
Reviewed-by: sterni <sternenseemann@systemli.org>
Tested-by: BuildkiteCI
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As of this commit, all three types of bindings scopes are compiled the
same way (i.e. compilation of non-recursive attribute sets has been
switched over to the new code paths).
This sets us up for doing the final implementation of nested attribute
sets.
HOWEVER, this breaks the existing implementation of nested attributes
in non-recursive attribute sets. That implementation is flawed and
unworkable in practice, so we need to do this dance to be able to
implement it correctly.
Change-Id: Iba2545c0d1d6b51f5e1a31a5d005b8d01da546d3
Reviewed-on: https://cl.tvl.fyi/c/depot/+/6782
Reviewed-by: sterni <sternenseemann@systemli.org>
Tested-by: BuildkiteCI
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This wires up the new bindings setup logic to be able to thread
through & compile dynamic attributes in recursive attrs.
It seems like we don't actually need to retain the phasing of Nix
exactly, as we can use the phantom mechanism to declare all locals
without making the dynamic ones accessible.
Change-Id: Ic2d43dd8fd97d7ccd56d8c6adf2ff97274cd837a
Reviewed-on: https://cl.tvl.fyi/c/depot/+/6781
Reviewed-by: sterni <sternenseemann@systemli.org>
Tested-by: BuildkiteCI
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Another slice of the salami, but no functionality changes yet (other
than opening a code path that can reach a `todo!()`, but this will be
removed soon).
Change-Id: I56b4ed323f70754ed1ab27964ee3c99cf3bf3292
Reviewed-on: https://cl.tvl.fyi/c/depot/+/6780
Tested-by: BuildkiteCI
Reviewed-by: sterni <sternenseemann@systemli.org>
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The previous way of sanitising dynamic keys is going away as we're
slowly introducing the new nested key logic.
While touching this stuff, I've also changed all the related string
types to SmolStr as that is more sensible for identifiers.
Change-Id: If30c74151508719d646d0e68e7d6f62c36f4d23f
Reviewed-on: https://cl.tvl.fyi/c/depot/+/6779
Tested-by: BuildkiteCI
Reviewed-by: sterni <sternenseemann@systemli.org>
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Change-Id: I6d74f71ecd671feaec96ee4ff39f218907c517fe
Reviewed-on: https://cl.tvl.fyi/c/depot/+/6777
Tested-by: BuildkiteCI
Reviewed-by: sterni <sternenseemann@systemli.org>
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Removes the `compile_inherit_attrs` logic which was only used for
BindingsKind::Attrs (i.e. non-recursive attrs).
This brings us a step closer to fully merging all the binding logic
into one block that can dispatch based on the kind of bindings (and
thus giving us a good point to introduce the final logic for nested
bindings).
Change-Id: If48d7a9497fc084a5cc03a130c2a7da5e2b8ef0c
Reviewed-on: https://cl.tvl.fyi/c/depot/+/6776
Tested-by: BuildkiteCI
Reviewed-by: sterni <sternenseemann@systemli.org>
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This helper is responsible for declaring the bindings in the
compiler's scope tracking structures.
It is almost equivalent to the previous logic, but also accounts for
`BindingsKind::Attrs` - though those code paths do not end up here
yet.
Change-Id: I44f617b99b10f2a7b9675f7b23e2c803a4a93d29
Reviewed-on: https://cl.tvl.fyi/c/depot/+/6775
Tested-by: BuildkiteCI
Reviewed-by: sterni <sternenseemann@systemli.org>
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Upstream nixpkgs removed a lot of aliases this time, so we needed to do
the following transformations. It's a real shame that aliases only
really become discoverable easily when they are removed.
* runCommandNoCC -> runCommand
* gmailieer -> lieer
We also need to work around the fact that home-manager hasn't catched
on to this rename.
* mysql -> mariadb
* pkgconfig -> pkg-config
This also affects our Nix fork which needs to be bumped.
* prometheus_client -> prometheus-client
* rxvt_unicode -> rxvt-unicode-unwrapped
* nix-review -> nixpkgs-review
* oauth2_proxy -> oauth2-proxy
Additionally, some Go-related builders decided to drop support for
passing the sha256 hash in directly, so we need to use the generic hash
arguments.
Change-Id: I84aaa225ef18962937f8616a9ff064822f0d5dc3
Reviewed-on: https://cl.tvl.fyi/c/depot/+/6792
Autosubmit: sterni <sternenseemann@systemli.org>
Tested-by: BuildkiteCI
Reviewed-by: grfn <grfn@gws.fyi>
Reviewed-by: flokli <flokli@flokli.de>
Reviewed-by: tazjin <tazjin@tvl.su>
Reviewed-by: wpcarro <wpcarro@gmail.com>
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This is responsible for actually setting up `TrackedBinding`s on the
stack, i.e. in some sense "actually compiling" values in bindings.
There is no functionality change to before, i.e. this is a salami
slice.
Change-Id: Idb0312038e004470a7d130c020ae0fe87c55c218
Reviewed-on: https://cl.tvl.fyi/c/depot/+/6774
Reviewed-by: sterni <sternenseemann@systemli.org>
Tested-by: BuildkiteCI
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Splits the large `compile_inherits` function which
previously *compiled* plain inherits and *declared* namespaced
inherits into `compile_plain_inherits` and
`declare_namespaced_inherits`.
This is supposed to make more sense than before, but is still not
consistently used (notably, non-recursive attribute sets still
duplicate most of this logic).
Another salami slice.
Change-Id: Id97fac1cbd5ee97b24d047e7728655e6b7734153
Reviewed-on: https://cl.tvl.fyi/c/depot/+/6773
Reviewed-by: sterni <sternenseemann@systemli.org>
Tested-by: BuildkiteCI
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