John Ericson 67aa63e5e2 build-support/rust: Organize
- `toRustTarget` and friends pulled out from rust tools into rust
   library. Since they don't depend on any packages they can be more
   widely useable.

 - `build-rust-package` gets its own directory

 - `fetch-cargo-tarball` gets its own directory

(cherry picked from commit 18ed048c7b27e288a6c9ba894790a7e67ed5080d)
2021-11-07 20:03:11 +00:00

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for dir in pkg-config-*; do
[ -d "$dir" ] || continue
echo "Patching pkg-config registry dep"
substituteInPlace "$dir/src/lib.rs" \
--replace '"/usr"' '"'"$NIX_STORE"'/"'
done