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unsafeGetAttrPos: Set string context on store paths

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This is needed to devirtualize them when they get passed to a
derivation or builtins.toFile. Arguably, since this builtin is unsafe,
we could just ignore this, but we may as well do the correct thing.
This commit is contained in:
Eelco Dolstra 2025-04-18 16:01:19 +02:00
parent 0c0dda3b29
commit 43a26916c2
1 changed files with 10 additions and 1 deletions
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11
src/libexpr/eval.cc
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@ -948,7 +948,16 @@ void EvalState::mkPos(Value & v, PosIdx p)
auto origin = positions.originOf(p);
if (auto path = std::get_if<SourcePath>(&origin)) {
auto attrs = buildBindings(3);
attrs.alloc(sFile).mkString(path->path.abs());
if (path->accessor == rootFS && store->isInStore(path->path.abs()))
// FIXME: only do this for virtual store paths?
attrs.alloc(sFile).mkString(path->path.abs(),
{
NixStringContextElem::Opaque{
.path = store->toStorePath(path->path.abs()).first
}
});
else
attrs.alloc(sFile).mkString(path->path.abs());
makePositionThunks(*this, p, attrs.alloc(sLine), attrs.alloc(sColumn));
v.mkAttrs(attrs);
} else