Add macos-26 runner support and bump MacPorts to 2.12.5#3
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Cherry-picked from upstream melusina-org/setup-macports (97cd1a6) to add macos-26 runner support. Conflicts resolved to keep this fork's no-caching design; took upstream's macOS version matrix (drop 13, add 26). Original author: Michaël Le Barbier <michael.le-barbier@melusina.org> Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
MacPorts 2.11.5's pkg postinstall scripts fail on the current macOS 15 (Sequoia) and macOS 26 (Tahoe) runner images; 2.11.5 last passed CI on the Sep-2025 images. 2.12.5 (Apr 2026) post-dates the current images and ships Sonoma/Sequoia/Tahoe packages. Bump the action default, CI matrix, testsuite parameters, and docs to keep them aligned. Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
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Summary
Adds support for the
macos-26(Tahoe) GitHub Actions runner (missing from this fork), and bumps MacPorts2.11.5→2.12.5so installation succeeds on the current runner images.Changes
macos-26 support
Cherry-picked from upstream melusina-org/setup-macports@97cd1a6 ("Goodbye MacOS 12, 13, welcome MacOS 15, 26"):
macos-14,macos-15,macos-26(dropsmacos-13, whose runner image is being phased out).26-Tahoeto the known-macOS database insubr/macos.sh.run-testsuite-on-macos-26-local.yaml; package build now runs on macos-15.MacPorts 2.11.5 → 2.12.5
The first CI run failed: MacPorts 2.11.5's
.pkgpostinstall scripts error out on the current macOS 15 (Sequoia) and macOS 26 (Tahoe) runner images. (Error: Port db48 not foundis a downstream symptom — MacPorts never finishes installing, so its port index is absent.) This is environmental, not introduced here: 2.11.5 last passed on the Sep-2025 images; the images have since been updated (current Sequoia image20260525). macOS 14 (Sonoma) still installs 2.11.5 fine.2.12.5 (Apr 2026) post-dates the current images and ships Sonoma/Sequoia/Tahoe packages. Bumped consistently across the action default (
action.yaml,subr/macports.sh), CI matrix, testsuite parameter files, and README docs.Conflict resolution notes
Upstream's other recent commits re-introduce/extend MacPorts caching, which this fork deliberately removed. Only the macOS-version commit was cherry-picked, so the fork's no-caching design is preserved.
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