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Backport SourcePath from the lazy-trees branch

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This introduces the SourcePath type from lazy-trees as an abstraction
for accessing files from inputs that may not be materialized in the
real filesystem (e.g. Git repositories). Currently, however, it's just
a wrapper around CanonPath, so it shouldn't change any behaviour. (On
lazy-trees, SourcePath is a <InputAccessor, CanonPath> tuple.)
This commit is contained in:
Eelco Dolstra 2023-04-06 13:15:50 +02:00
parent 5256ba6d87
commit 94812cca98
35 changed files with 567 additions and 263 deletions
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src/libexpr/attr-path.hh
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@ -18,7 +18,7 @@ std::pair<Value *, PosIdx> findAlongAttrPath(
Value & vIn);
/* Heuristic to find the filename and lineno or a nix value. */
std::pair<std::string, uint32_t> findPackageFilename(EvalState & state, Value & v, std::string what);
std::pair<SourcePath, uint32_t> findPackageFilename(EvalState & state, Value & v, std::string what);
std::vector<Symbol> parseAttrPath(EvalState & state, std::string_view s);