Composer compatibility macOS legs fail in setup-php on main #1210

All three macOS legs of Composer patch compatibility (native-macos) are failing on main in shivammathur/setup-php 2.37.2 (f3e473d1). PHP 8.1, 8.3 and 8.4 are all affected.

• Last green main run: 03b9418 at 00:13 UTC (run 37863684088)
• First red: 793edd4 at 00:55 UTC (run 37867206948), attempt 1
• Attempt 2 at 01:39 UTC failed identically, so this is not a one-off blip

The Homebrew install runs for about 3.5 minutes and then fails:

==> Setup PHP
sed: : No such file or directory
grep: : No such file or directory
.../setup-php/f3e473d.../src/scripts/unix.sh: line 266: php: command not found
.../unix.sh: line 261: php_config: parameter null or not set
cp: /php.ini: No such file or directory
✗ PHP Could not setup PHP 8.4

This is the same failure mode as the 2026-10-07 23:51Z PHP 8.5 breakage noted in the workflow, but it now covers every version. It is likely a change in the shivammathur/php Homebrew tap that 2.37.2 can't handle.

Impact: red on main push only. The native-macos job is skipped on PRs, Composer compatibility doesn't run in merge_group, and the composer e2e legs in ci.yml are Ubuntu-only. So merging is not blocked. Ubuntu and Windows legs are green.

Next step: check whether a newer setup-php release fixes the macOS Homebrew path. If one does, pin it (by SHA) in both composer-compatibility.yml and ci.yml. Otherwise, consider installing PHP on macOS through a pinned alternative. Don't drop the macOS coverage.

Generated by Claude Code