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@@ -73,6 +73,20 @@ The base is kept patched automatically on each run: when the mirror's ChangeLog head differs from the recorded marker, new packages from `patches/packages/` are applied to the local base via `upgradepkg`. +## Package cache + +Set `PKG_CACHE` in your config to a local directory to cache built packages +across runs (leave empty to disable). Layout mirrors the SBo tree +(`<category>/<prog>/<prog>-<version>-...txz`), one package per prog. + +The named target always builds fresh, it is the package under test. Its +dependencies are installed from the cache when their version is unchanged +(reported as `CACHED`), otherwise they are built and cached. A build order line +shows the outcome per package: `cached (1.1)`, `rebuild: 1.0 -> 1.1`, or +`build (new)`; `--dry-run` shows the same without building. The whole cache is +wiped automatically when the base is patched, since cached packages were built +against the previous base. + ## Usage ``` |