fix: Replace EOL macOS M1 resource class with M4 Pro#373
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The macos.m1.large.gen1 resource class reached end-of-life on Feb 16, 2026 and was removed by CircleCI. All CI builds using this class fail instantly. Replace with macos.m4pro.medium, CircleCI's recommended successor for Apple silicon macOS builds. Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
The new M4 Pro resource classes dropped the `macos.` prefix used by the old M1/M2 classes. The correct name is `m4pro.medium`, not `macos.m4pro.medium`. Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
imSzukala
approved these changes
Feb 24, 2026
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Why?
CircleCI removed all M1 and M2 macOS resource classes on February 16, 2026 (EOL). The
macos.m1.large.gen1class used in our CI config no longer exists, causing every macOS job (notablyinstall-dependencies) to fail instantly with 0 duration. This blocks all PRs — including Dependabot security updates like #372 and #363.How?
Replace
macos.m1.large.gen1withmacos.m4pro.medium, CircleCI's recommended successor for Apple silicon macOS builds. Xcode 16.0.0 is confirmed supported on the M4 Pro image, so no other config changes are needed. After merging, Dependabot PRs should be rebased (@dependabot rebase) to pick up this fix.Generated with Claude Code