fix(maven): use symlink instead of settings.xml for cache localRepository#2361
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…tory The previous approach created a settings.xml with <localRepository> pointing to /var/cache/melange/m2repository. This broke builds that hardcode ~/.m2/repository paths (e.g. Cassandra's build-resolver.xml expects jacoco jars at /root/.m2/repository/...). Replace the settings.xml <localRepository> override with a symlink from ~/.m2/repository to /var/cache/melange/m2repository. This way Maven's default local repository transparently points to the cache while builds referencing ~/.m2/repository still work. The symlink is created at both /root/.m2/repository (qemu runner) and $HOME/.m2/repository (bubblewrap/docker) to cover all runners. Fixes cassandra-5.0 build failure (BUILD FAILED: src '/root/.m2/repository/org/jacoco/org.jacoco.agent/0.8.8/ org.jacoco.agent-0.8.8.jar' doesn't exist).
89luca89
approved these changes
Feb 20, 2026
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Summary
settings.xml<localRepository>override with a symlink from~/.m2/repositoryto/var/cache/melange/m2repository/root/.m2/repository(qemu) and$HOME/.m2/repository(bubblewrap/docker)Problem
The
pombump.yamlpipeline (added in #2304) unconditionally created/root/.m2/settings.xmlwith<localRepository>/var/cache/melange/m2repository</localRepository>whenever/var/cache/melangeexisted. This redirected where the Maven Resolver cached downloaded jars, but builds that hardcode~/.m2/repositorypaths broke because jars were no longer at the expected location.Specifically, Cassandra's
build-resolver.xmlexpects jars at/root/.m2/repository/org/jacoco/org.jacoco.agent/0.8.8/org.jacoco.agent-0.8.8.jarand failed withBUILD FAILED: src '...' doesn't exist.Fix
Use a symlink instead:
~/.m2/repository→/var/cache/melange/m2repository. This way:~/.m2/repositorypaths follow the symlink and find jarsTesting
Verified locally with cassandra-5.0 build:
BUILD SUCCESSFUL, symlink at$HOME/.m2/repositoryBUILD SUCCESSFUL, symlink at/root/.m2/repository, 139MB cache persisted to host