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bbb42450c5
Since version 2.0.0, proc-macro-crate has assumed it can exec()
`env::var("CARGO")` in order to run `cargo locate-project`.
This commit adds a crate override to proc-macro-crate which simply writes the
path to buildPlatform.cargo into the proc-macro-crate sources.
This way we don't need to set `env.CARGO` for every build that depends on
proc-macro-crate -- if we do that, the $CARGO environment variable would be
visible to the entire build. This could potentially lead to incredibly
hard-to-troubleshoot heisenbugs if there is some other crate that expects
`env::var("CARGO")` to exist -- that other crate would mysteriously work only
in projects that use proc-macro-crate but not anywhere else!
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|---|---|---|
| .. | ||
| build-rust-crate | ||
| build-rust-package | ||
| fetch-cargo-tarball | ||
| hooks | ||
| lib | ||
| rustc-wrapper | ||
| sysroot | ||
| test/import-cargo-lock | ||
| default-crate-overrides.nix | ||
| fetchcargo-default-config.toml | ||
| fetchcrate.nix | ||
| import-cargo-lock.nix | ||
| replace-workspace-values.py | ||