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PR CI acceleration, SPEC-009, and the repairs of #756 and #757
- #759
#759
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PR CI acceleration, SPEC-009, and the repairs of #756 and #757
#759
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mcpp-community/mcpp:main
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feat/pr-ci-acceleration
mcpp-community/mcpp:feat/pr-ci-acceleration
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docs: the PR CI acceleration and toolchain specification design record
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docs(specs): SPEC-009, the support and maintenance of toolchains
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ci: one build of mcpp per host, stages in one workflow, single-writer caches, timed shards and a coverage check
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tests: fixture paths that the documentation structure check does not read as chapters
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ci: use-built-mcpp installs the toolchain the build used, after setting the mirror
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ci: four Linux shards from the measured durations; e2e 741 compiles a library and links nothing
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A build record names its engine, one predicate admits a recorded build, and each path dependency is classified by its own package (#757, #756)
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The graph's own engine binding is asked by the fast path; 2026.10.2.1
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docs: the contributing and release skills and the README badge describe the staged CI
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Repairs from the review of #759: whole-token coverage, a classifier that falls back to the whole CI, a concurrency group per push to main, cache keys that name the install list, a step for the shar…
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PR #759, round 4: the Windows literal-to-optional<std::string> form, and a 5-line tighten so src/build/prepare/plan.cpp is back under the 2,500-line gate
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ci, round 5: a fast path that skips the xlings tarball when the cache is at the pin, and a Windows e2e step that installs mingw only when the sandbox does not already hold it
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ci, round 5 follow-up: address xlings by absolute path in the bootstrap fast-path; bare `xlings.exe` failed on Git Bash for Windows because MSYS re-derives PATH from the Windows environment on ever…
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chore: bump version to 2026.10.3.1 (one past the engine-binding release at 2026.10.2.1)
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