Fix macOS CI: install gfortran and pin runner to macos-15 - #31
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The macOS setup step ran `brew --prefix gcc`, which only prints the install prefix - it never installs gcc. gfortran was therefore absent and the f2py/meson build could not find a Fortran compiler. Also pin the runner to macos-15. `macos-latest` is now macOS 26, whose Homebrew bottles carry minos 26.0; delocate rejects those against the MACOSX_DEPLOYMENT_TARGET=15.0 wheel target these workflows still set. Mirrors the fix already applied in eggzec/pyswarm. Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
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macOS build
The macOS setup step ran
brew --prefix gcc, which only prints the installprefix — it never installs gcc. gfortran was therefore absent and the
f2py/meson build could not find a Fortran compiler.
It also ran on
macos-latest, which is now macOS 26. Those Homebrew bottlescarry minos 26.0, which
delocaterejects against theMACOSX_DEPLOYMENT_TARGET=15.0wheel target these workflows still set.This applies the fix already proven in eggzec/pyswarm:
a real
brew install gcc, PATH export, agfortran --versionverificationstep, and the runner pinned to
macos-15.Verification
ruff checkandruff format --diffboth pass using this workflow's owncommand, and the test suite passes locally via uv.
Not verified: the macOS steps could not be exercised locally (no macOS
runner). Worth watching the first CI run on this PR.
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