ci: cache maven wrapper distribution to avoid per-build downloads - #2527
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The wrapper jar and Maven distribution zip land under ~/.m2/wrapper, a sibling of ~/.m2/repository -- the existing cache path never reached it, so every build re-fetched apache-maven-3.9.14-bin.zip from Maven Central. Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com> Claude-Session: https://claude.ai/code/session_011d1LPWiNeTmi5johUb4ntn
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Description
The Maven wrapper jar and the Maven distribution zip it fetches (
apache-maven-3.9.14-bin.zip) land under~/.m2/wrapper, a sibling directory of~/.m2/repository. The existingCache Maven packagesstep inbuild.ymlonly caches~/.m2/repository, so every build re-downloaded the wrapper jar and the ~10MB Maven distribution zip from Maven Central, even on a full dependency-cache hit.This adds a dedicated cache step for
~/.m2/wrapper, keyed onhashFiles('**/maven-wrapper.properties')so a wrapper-version bump invalidates only this small cache rather than the larger dependency cache.Note:
release.ymlalready caches the whole~/.m2directory and was unaffected by this gap; this change bringsbuild.ymlin line with it.Generated by Claude Code