macos: fix broken brew pkg-config upgrade
it looks like in brew they removed pkg-config formula and added
an alias to the pkgconf formula (which also provides a pkg-config
cli command).
the transition was not seamless:
on github actions CI:
Installing pkg-config
==> Downloading https://ghcr.io/v2/homebrew/core/pkgconf/manifests/2.3.0_1
==> Fetching pkgconf
==> Downloading https://ghcr.io/v2/homebrew/core/pkgconf/blobs/sha256:5f83615f295e78e593c767d84f3eddf61bfb0b849a1e6a5ea343506b30b2c620
==> Pouring pkgconf--2.3.0_1.arm64_sonoma.bottle.tar.gz
Error: The `brew link` step did not complete successfully
The formula built, but is not symlinked into /opt/homebrew
Could not symlink bin/pkg-config
Target /opt/homebrew/bin/pkg-config
is a symlink belonging to pkg-config@0.29.2. You can unlink it:
brew unlink pkg-config@0.29.2
To force the link and overwrite all conflicting files:
brew link --overwrite pkgconf
To list all files that would be deleted:
brew link --overwrite pkgconf --dry-run
Possible conflicting files are:
/opt/homebrew/bin/pkg-config -> /opt/homebrew/Cellar/pkg-config@0.29.2/0.29.2_3/bin/pkg-config
/opt/homebrew/share/aclocal/pkg.m4 -> /opt/homebrew/Cellar/pkg-config@0.29.2/0.29.2_3/share/aclocal/pkg.m4
/opt/homebrew/share/man/man1/pkg-config.1 -> /opt/homebrew/Cellar/pkg-config@0.29.2/0.29.2_3/share/man/man1/pkg-config.1
==> Summary
🍺 /opt/homebrew/Cellar/pkgconf/2.3.0_1: 27 files, 474KB
Installing pkg-config has failed!
Thomas Waldmann