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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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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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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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... but do not use it yet.
This refactoring is pretty complicated, so I'm applying salami-slicing
tactics here.
Change-Id: I66e04ee10548f68bf67dc842f3f14cc279426c22
Reviewed-on: https://cl.tvl.fyi/c/depot/+/6772
Reviewed-by: sterni <sternenseemann@systemli.org>
Tested-by: BuildkiteCI
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As part of the unification of binding logic between different carriers
of bindings, we need to track which kind of bindings we are dealing
with (attribute set? recursive scope? ...) to correctly emit keys and
declare identifiers in the locals stack.
Right now this changes no functionality as `BindingsKind::Attrs` is
not yet used (only RecAttrs and LetIn, which was previously
represented by the `rec_attrs` boolean).
Change-Id: Id2ac27894079ab584521cb568d75c124f7bf2403
Reviewed-on: https://cl.tvl.fyi/c/depot/+/6771
Reviewed-by: sterni <sternenseemann@systemli.org>
Tested-by: BuildkiteCI
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This helper will gain the ability to compile both kinds of inherits,
but it is kind of tricky to get right so I am doing it in smaller
steps. Right now there is no change in functionality.
Change-Id: Ie990b88dd90a5e0f9fd79961ee09a6c83f2c872d
Reviewed-on: https://cl.tvl.fyi/c/depot/+/6770
Reviewed-by: sterni <sternenseemann@systemli.org>
Tested-by: BuildkiteCI
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This just describes a binding, and we do need a good name for the kind
of binding*s*, which is going to be introduced soon.
Change-Id: I53900ee52da8a07dae8b918fa6a4cb308e627efb
Reviewed-on: https://cl.tvl.fyi/c/depot/+/6768
Tested-by: BuildkiteCI
Reviewed-by: sterni <sternenseemann@systemli.org>
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Change-Id: I08f40b4b53652a519e76d6e8344c7c3fe10a0689
Reviewed-on: https://cl.tvl.fyi/c/depot/+/6767
Tested-by: BuildkiteCI
Reviewed-by: sterni <sternenseemann@systemli.org>
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Changes the module structure of the compiler to have a module
dedicated to the logic of setting up bindings. This logic is in the
process of being merged between attribute sets and `let`-expressions,
and the structure of the modules makes more sense when ecapsulating
that specifically.
(Other bits of code related to e.g. attribute sets are pretty
straightforward and can just live in the main compiler module).
Change-Id: I9469b73a7034e5b5f3bb211694d97260c4c9ef54
Reviewed-on: https://cl.tvl.fyi/c/depot/+/6766
Autosubmit: tazjin <tazjin@tvl.su>
Tested-by: BuildkiteCI
Reviewed-by: sterni <sternenseemann@systemli.org>
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The previous version had a bug where we assumed that the number of
entries in an attribute set AST node would be equivalent to the number
of entries in the runtime attribute set, but due to inherit nodes
containing a variable number of entries, this did not work out.
Fixes b/199
Change-Id: I6f7f7729f3512b297cf29a2e046302ca28477854
Reviewed-on: https://cl.tvl.fyi/c/depot/+/6749
Tested-by: BuildkiteCI
Reviewed-by: sterni <sternenseemann@systemli.org>
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This updates rnix-parser to a version where inherits provide an
iterator over `ast::Attr` instead of `ast::Ident`, which mirrors the
behaviour of Nix (inherits can have (statically known) strings as
their identifiers).
This actually required some fairly significant code reshuffling in the
compiler, as there was an implicit assumption in many places that we
would have an `ast::Ident` node available when dealing with variable
access (which is then explicitly only not true in this case).
Change-Id: I12f1e786c0030c85107b1aa409bd49adb5465546
Reviewed-on: https://cl.tvl.fyi/c/depot/+/6747
Tested-by: BuildkiteCI
Reviewed-by: sterni <sternenseemann@systemli.org>
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Change-Id: I6b9283d16447c83dd3978371d9a6ac1beb985926
Reviewed-on: https://cl.tvl.fyi/c/depot/+/6657
Autosubmit: grfn <grfn@gws.fyi>
Tested-by: BuildkiteCI
Reviewed-by: tazjin <tazjin@tvl.su>
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Change-Id: I3ad2234e8a8e4280e498c6d7af8ea0733ed4c7ea
Reviewed-on: https://cl.tvl.fyi/c/depot/+/6699
Autosubmit: sterni <sternenseemann@systemli.org>
Reviewed-by: tazjin <tazjin@tvl.su>
Tested-by: BuildkiteCI
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Previously only the first one was guaranteed to be forced, but we need
to do this for all of them.
Fixes b/190
Change-Id: I76b5667dbfb2f3fde3587e7b91d268cbf32aca00
Reviewed-on: https://cl.tvl.fyi/c/depot/+/6645
Tested-by: BuildkiteCI
Reviewed-by: tazjin <tazjin@tvl.su>
Autosubmit: tazjin <tazjin@tvl.su>
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This disconnects ownership of the `File` reference in a compiler from
the calling scope, which is required for when we implement `import`.
`import` will need to carry an `Rc<RefCell<CodeMap>>` (or maybe, in
the future, Arc) to give us the ability to add new detected code
files at runtime.
Note that the choice of `Arc` over `Rc` here is not ours - it's the
codemap crate's.
Change-Id: I3aeca4ffc167acbd1701846a332d93550b56ba7d
Reviewed-on: https://cl.tvl.fyi/c/depot/+/6630
Tested-by: BuildkiteCI
Reviewed-by: grfn <grfn@gws.fyi>
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Invalid integers (eg integers that're too long) end up as error returns
on the `.value()` returned from the literal in the AST - previously we'd
unwrap this error, causing it to panic the compiler, but now we've got a
nice error variant for it (which just unwraps the underlying
std::num::ParseIntError).
Change-Id: I50c3c5ba89407d86659e20d8991b9658415f39a0
Reviewed-on: https://cl.tvl.fyi/c/depot/+/6635
Tested-by: BuildkiteCI
Reviewed-by: sterni <sternenseemann@systemli.org>
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This matches the name of the AST node from which it was compiled.
Suggested by sterni in cl/6231
Change-Id: Ia51525158d2f47467c01fce2282005b1a8417a47
Reviewed-on: https://cl.tvl.fyi/c/depot/+/6623
Tested-by: BuildkiteCI
Reviewed-by: sterni <sternenseemann@systemli.org>
Reviewed-by: grfn <grfn@gws.fyi>
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Suggested by sterni in cl/6231
Change-Id: I58bbc8a922d360ea79a4dacb76cf8aa1fad93757
Reviewed-on: https://cl.tvl.fyi/c/depot/+/6622
Tested-by: BuildkiteCI
Reviewed-by: sterni <sternenseemann@systemli.org>
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... it would be nice if we could thread it through to the `Scope`
stuff (declaring phantoms & locals).
Change-Id: Id3b84e79032b8fbb12138b719e657565355fbc79
Reviewed-on: https://cl.tvl.fyi/c/depot/+/6616
Tested-by: BuildkiteCI
Reviewed-by: sterni <sternenseemann@systemli.org>
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This trait can be used to convert most structures from rnix-parser
into a codemap::Span. It uses a macro to implement the trait for the
various expression types in the rnix AST, as Rust's silly semantic
versioning restriction stops us from doing a blanket implementation.
This will be used in the next commit to clean up the span handling in
the compiler a bit.
Change-Id: I0a437034e5fa203b5a49c6f25c45932a9f3b2bca
Reviewed-on: https://cl.tvl.fyi/c/depot/+/6615
Tested-by: BuildkiteCI
Reviewed-by: sterni <sternenseemann@systemli.org>
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... and emit a warning if anyone decides to use.
Change-Id: Iaa6fe9fa932340e6d0fa9f357155e78823702576
Reviewed-on: https://cl.tvl.fyi/c/depot/+/6611
Tested-by: BuildkiteCI
Reviewed-by: sterni <sternenseemann@systemli.org>
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Yep.
This is kind of ugly right now. The idea is that the recursive_scope
compilation function is used for recursive sets as well by emitting
the keys. The rest of the logic is pretty much identical.
There is quite a lot of code here that can be cleaned up (duplication
between attrs and let, duplication inside of the recursive scope
compilation function etc.), but I'd like to get it working first and
then make it nice.
Note that nested keys are *not* supported yet.
Change-Id: I45c7cdd5f0e1d35fd94797093904740af3a97134
Reviewed-on: https://cl.tvl.fyi/c/depot/+/6610
Reviewed-by: sterni <sternenseemann@systemli.org>
Tested-by: BuildkiteCI
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This type is used in the list temporarily populated by the *second*
pass over all identifiers in a recursive scope. This first pass only
serves to make all bindings known to the compiler, without populating
their values yet.
Having a type here is going to be useful once we implement `rec`,
which needs to thread through slightly more information.
Change-Id: Ie33e0f096c5fcb6c864c991255466748b6f0d1eb
Reviewed-on: https://cl.tvl.fyi/c/depot/+/6609
Reviewed-by: sterni <sternenseemann@systemli.org>
Tested-by: BuildkiteCI
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This needs to be reused between let & `rec` attrs.
Change-Id: I4a3bb90af4be32771b0f9e405c19370e105c0fef
Reviewed-on: https://cl.tvl.fyi/c/depot/+/6608
Reviewed-by: sterni <sternenseemann@systemli.org>
Tested-by: BuildkiteCI
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Plain move, no other changes.
Change-Id: Ic4f89709f5c2cbc03182a848af080c820e39a0fd
Reviewed-on: https://cl.tvl.fyi/c/depot/+/6607
Reviewed-by: sterni <sternenseemann@systemli.org>
Tested-by: BuildkiteCI
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This makes the phases of attribute set construction that Nix has very
explicit (inherits, static keys, dynamic keys).
This change focuses on the split between dynamic/static keys by
collecting all dynamic ones while compiling the static ones, and then
phasing them in afterwards. It's possible we also need to do some
additional splitting inside of the inherits.
Change-Id: Icae782e2a5c106e3ce0831dda47ed81c923c0a42
Reviewed-on: https://cl.tvl.fyi/c/depot/+/6530
Reviewed-by: sterni <sternenseemann@systemli.org>
Tested-by: BuildkiteCI
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This allows us to get rid of the count local variable which was a bit
confusing. Calling parts.len() multiple times is fine, since the length
doesn't need to be computed.
Change-Id: I4f626729ad1bf23a93cb701385c3f4b50c57456d
Reviewed-on: https://cl.tvl.fyi/c/depot/+/6584
Autosubmit: sterni <sternenseemann@systemli.org>
Reviewed-by: tazjin <tazjin@tvl.su>
Tested-by: BuildkiteCI
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With this puzzle piece of string compilation in place, `compile_str`
becomes less redundant, as every part now needs to be compiled the same.
The thunking logic becomes a bit trickier, since we need to thunk even
in the case of `count == 1` if the single part is interpolating.
Splitting the inner (shared) code in a separate function turned out to
be easier for making rustc content.
Change-Id: I6a554ca599926ae5907d7acffce349c9616f568f
Reviewed-on: https://cl.tvl.fyi/c/depot/+/6582
Reviewed-by: tazjin <tazjin@tvl.su>
Tested-by: BuildkiteCI
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If we have multiple string parts, we need to thunk assembling the
string. If we have a single literal, it is strict (like all literals),
but a single interpolation part may compile to a thunk, depending on how
the expression inside is compiled – we can avoid forcing to early here
compared to the previous behavior.
Note that this CL retains the bug that `"${x}"` is erroneously
translated to `x`, implying e.g. `"${12}" == 12`.
The use of `parts.len()` is unproblematic, since normalized_parts()
builds a `Vec` instead of returning an iterator.
Change-Id: I3aecbfefef65cc627b1b8a65be27cbaeada3582b
Reviewed-on: https://cl.tvl.fyi/c/depot/+/6580
Autosubmit: sterni <sternenseemann@systemli.org>
Reviewed-by: tazjin <tazjin@tvl.su>
Tested-by: BuildkiteCI
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OpAttrsIsSet and OpAttrsTrySelect will fail silently if the attribute
set value on the stack is actually a thunk, so we need to make sure to
force at every step of the way.
Emitting the force instructions in the compiler because it is easier to
add, but maybe the VM should do this when handling the relevant opcodes?
Comments welcome.
Change-Id: I65c5ef348d59b2d07c9bb06abb24f9f3e6a0fdb2
Reviewed-on: https://cl.tvl.fyi/c/depot/+/6540
Reviewed-by: grfn <grfn@gws.fyi>
Autosubmit: sterni <sternenseemann@systemli.org>
Tested-by: BuildkiteCI
Reviewed-by: tazjin <tazjin@tvl.su>
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The expression inside ${…} may return arbitrary values, including
thunks, so we need to make sure to force them just in case.
Change-Id: Ic11ba00c4c92a10a83becd91233db5f57f6e59c8
Reviewed-on: https://cl.tvl.fyi/c/depot/+/6541
Autosubmit: sterni <sternenseemann@systemli.org>
Reviewed-by: grfn <grfn@gws.fyi>
Tested-by: BuildkiteCI
Reviewed-by: tazjin <tazjin@tvl.su>
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Pointed out by sterni in cl/6389
Change-Id: I648056a760266a8cfd7adcdc478c7ff2132991f7
Reviewed-on: https://cl.tvl.fyi/c/depot/+/6568
Reviewed-by: sterni <sternenseemann@systemli.org>
Tested-by: BuildkiteCI
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Pointed out by sterni in cl/6395
Change-Id: I2dda2bb11fef702df05fd7a4fd93b9e717a85dad
Reviewed-on: https://cl.tvl.fyi/c/depot/+/6567
Reviewed-by: sterni <sternenseemann@systemli.org>
Tested-by: BuildkiteCI
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This is more useful than pointing it at the entire assert expression,
as that includes the body as well which is not going to be relevant in
the error.
Pointed out by sterni in cl/6391
Change-Id: I95a5d1edf90df65e7fa53d4d04502afd6e99e89a
Reviewed-on: https://cl.tvl.fyi/c/depot/+/6566
Reviewed-by: sterni <sternenseemann@systemli.org>
Tested-by: BuildkiteCI
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