Cache the installed GCC trunk tree between CI runs - #299
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Codecov Report✅ All modified and coverable lines are covered by tests. Additional details and impacted files@@ Coverage Diff @@
## main #299 +/- ##
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Coverage 72.87% 72.87%
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Files 9 9
Lines 822 822
Branches 208 208
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Hits 599 599
Misses 24 24
Partials 199 199
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Closes #297. A composite action resolves the snapshot the unversioned URL redirects to, restores /opt/gcc-latest from the Actions cache under a key made of that file name and its Last-Modified date, and falls back to the download and apt install on a miss. The package's mkheaders postinst, which is the slow part of the install, therefore runs once per snapshot. Replaces the five copies of the install step in cmake.yml, bazel.yml, sanitizers.yml, and coverage.yml.
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Thanks for this. This should speed up CI.
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Closes #297.
Every GCC trunk job spent 81 to 149 s installing the compiler, more than the build it then ran, and most of that was the package's
mkheaderspostinst regenerating fixed headers..github/actions/install-gcc-trunkresolves the versioned file the unversioned URL redirects to, restores/opt/gcc-latestfrom the Actions cache under a key made of that file name and itsLast-Modifieddate, and falls back to the download and apt install on a miss. If the server ever stops providing either identifier, it installs without caching rather than key blindly.cmake.yml,bazel.yml,sanitizers.yml, andcoverage.ymlnow use the action, and the action file is in each workflow's paths filter. Pinning a snapshot after an upstream regression is the action'spackage-urlinput.