Pass File objects for PathMapper compatibility#6
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walter-zeromatter wants to merge 23 commits intohermeticbuild:mainfrom
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Pass File objects for PathMapper compatibility#6walter-zeromatter wants to merge 23 commits intohermeticbuild:mainfrom
walter-zeromatter wants to merge 23 commits intohermeticbuild:mainfrom
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…elbuild#3829)" This reverts commit f198dde.
…() (bazelbuild#3816)" This reverts commit 9586468.
…#3) * 0 * Add rust analyzer test coverage
Replace the --rustc-quit-on-rmeta / .rmeta approach with Buck2-style hollow rlibs: the RustcMetadata action runs rustc to completion with -Zno-codegen, emitting a .rlib archive (named -hollow.rlib) that contains only metadata and optimized MIR. Key fixes: - Main Rustc action uses full rlib --extern deps so the SVH embedded in the full rlib matches what downstream binaries expect (avoiding E0460 with non-deterministic proc macros). - RUSTC_BOOTSTRAP=1 is set on both actions: it changes the crate hash, so inconsistent use would cause SVH mismatch even for deterministic crates. - -Ldependency= points to the _hollow/ subdirectory so the full rlib and hollow rlib never appear in the same search path (avoids E0463). - transitive_metadata_outputs are always included in the sandbox so rustc can resolve transitive -Ldependency= references. Adds an SVH mismatch test that demonstrates the problem with non-deterministic proc macros (uses a HashMap-based derive macro whose output varies by OS-seeded random seed).
Changes tool_path arguments in clippy, rustdoc, unpretty, and rust_analyzer to pass File objects rather than .path/.short_path strings. This allows Bazel's PathMapper to correctly rewrite paths when --experimental_output_paths=strip is enabled. Also adds sysroot_anchor to the toolchain provider, used by rustc.bzl to emit --sysroot via map_each for PathMapper compatibility.
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Summary
.path/.short_pathstrings fortool_pathin clippy, rustdoc, unpretty, and rust_analyzer rulessysroot_anchorto toolchain provider for--sysrootpath mapping--experimental_output_paths=stripto work correctly with Rust rules