Alert: switching to v2 may malfunction on macOS due to cabal 3.8.1.0

[andreasabel]

While v1 of the setup action uses cabal 3.6.2.0 by default, v2 uses cabal 3.8.1.0. The latter runs pkgconfig --list-all in preparation for the constraint solving when a .cabal package has a pkgconfig-depends field. (For example, text-icu-0.8.0.2 has pkgconfig-depends: icu-i18n >= 62.1.) Unfortunately, pkgconfig --list-all currently segfaults on the macOS-11 and macOS-12 virtual environments, causing cabal 3.8.1.0 to silently malfunction. (The constraint solver assumes e.g. that there is no icu-i18n library installed.)

These are all upstream issues; pointers:

• pkg-config --list-all segfaults on macOS-{11,12} actions/runner-images#6364
• Cabal 3.8 checks for literally all pkg-config packages in the system cabal#8494
• build pkgconfig db individually when bulk fails cabal#8496

So, there isn't really anything to do here, but please keep this alert open until upstream issues are resolved.

[andreasabel]

This has been fixed upstream, in the macOS-11 and macOS-12 virtual environments.
However, cabal-3.8 may fail with mysterious configuration errors whenever there are malformed package configurations on the system causing pkgconfig to fail.