fix: proc-macro example from dep no longer affects feature resolution #13892
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Previously when checking if a dependency is a proc-macro, the v2 feature resolve resolver v2 looks for `proc-macro = true` for every target of the dependency. However, it's impossible to depend on a non-lib target as a proc-macro. This fix switches to only check if `proc-macro = true` for `[lib]` target for a dependency.
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Update cargo 14 commits in b1feb75d062444e2cee8b3d2aaa95309d65e9ccd..4dcbca118ab7f9ffac4728004c983754bc6a04ff 2024-06-07 20:16:17 +0000 to 2024-06-11 16:27:02 +0000 - Add local registry overlays (rust-lang/cargo#13926) - docs(change): Don't mention non-existent workspace.badges (rust-lang/cargo#14042) - test: migrate binary_name to snapbox (rust-lang/cargo#14041) - Bump to 0.82.0; update changelog (rust-lang/cargo#14040) - tests: Migrate alt_registry to snapbox (rust-lang/cargo#14031) - fix: proc-macro example from dep no longer affects feature resolution (rust-lang/cargo#13892) - chore: Bump cargo-util-schemas to 0.5 (rust-lang/cargo#14038) - chore(deps): update rust crate pulldown-cmark to 0.11.0 (rust-lang/cargo#14037) - fix: remove `__CARGO_GITOXIDE_DISABLE_LIST_FILES` env var (rust-lang/cargo#14036) - chore(deps): update rust crate itertools to 0.13.0 (rust-lang/cargo#13998) - fix(toml): remove `lib.plugin` key support and make it warning (rust-lang/cargo#13902) - chore(deps): update compatible (rust-lang/cargo#13995) - fix: using `--release/debug` and `--profile` together becomes an error (rust-lang/cargo#13971) - fix(toml): Convert warnings that `licence` and `readme` files do not exist into errors (rust-lang/cargo#13921) r? ghost
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What does this PR try to resolve?
Previously when checking if a dependency is a proc-macro,
the v2 feature resolver for
proc-macro = truefor every target of the dependency.
However, it's impossible to depend on a non-lib target as a proc-macro.
This fix switches to only check if
proc-macro = truefor[lib]target for a dependency.
Fixes #13726.
How should we test and review this PR?
Best reviewed commit-by-commit.
Additional information
I didn't really fix the discrepancy between the behavior of example lib and the documentation, which was mentioned in #13726 (comment).
Thanks @torhovland for the minimal test case.