Cache apt, submodule, and libghostty-vt in CI#35
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- Cache apt packages for test jobs (/var/cache/apt/archives) - Cache Ghostty submodule (.git/modules/ghostty) keyed on commit SHA - Cache libghostty-vt static library (lib/$arch/) keyed on arch + submodule SHA + patches hash - On lib cache hit, skip: submodule init, patch application, Zig install, and Zig build - Add --no-fetch to submodule update when cache is populated
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Adds three caching layers to the build jobs in both test.yaml and release.yaml.
Apt packages (/var/cache/apt/archives) for test jobs. Avoids re-downloading Qt5/CMake packages on every run.
Ghostty submodule (.git/modules/ghostty) keyed on commit SHA. Skips the recursive clone when the cache is populated.
libghostty-vt static library (lib/$arch/) keyed on arch + submodule SHA + patch hash. On cache hit, skips submodule init, patch application, Zig install, and the entire Zig cross-compilation. This is the biggest win, saving 2-5 minutes per matrix job.
On a lib cache hit, the build job goes straight from checkout to RPM build. The submodule and patches are only fetched/applied when the library needs rebuilding.