CI: cache the Julia depot - #149
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The artifacts cache never hit: XML.jl has no artifact, so the directory it keyed on never existed and nothing was saved. julia-actions/cache restores and saves the whole depot, registries, packages and compiled code included, one key per job and matrix cell, and deletes the previous cache of that key. Downstream, which installs two dependents per job, gets the same step. Assisted-by: Claude (Anthropic)
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The
[julia-buildpkg]notice on every job says it: no depot cache is restored. The workflow's only Julia cache keyed on~/.julia/artifacts, a directory this package never creates, so it never hit and never saved.julia-actions/cache@v3replaces it in both CI jobs and is added to Downstream: registries, packages and compiled code are restored per job and matrix cell, and the previous cache of the key is deleted, which needsactions: writeon the token.On the last run of
main, the work this can save per job is the test-dependency and coverage-tool precompilation plus buildpkg: about 15 s on Linux and 40 s on the Intel macOS runner. Downstream installs XLSX and SatelliteToolboxOrbitDataMessages with their dependencies on every run and should gain more.