Fix incompatible extensions in mvnup for Maven 4#12120
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Add extension handling to mvnup that automatically fixes known Maven 4-incompatible extensions in .mvn/extensions.xml: - Replace os-maven-plugin (kr.motd.maven) with Maveniverse Nisse (eu.maveniverse.maven.nisse:extension:0.4.4) which works with both Maven 3 and 4. Also adds -Dnisse.compat.osDetector to .mvn/maven.config for drop-in compatibility. - Remove Develocity/Gradle Enterprise extensions (com.gradle) which depend on org.slf4j.impl.SimpleLogger not available in Maven 4. Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
cstamas
approved these changes
May 20, 2026
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Summary
kr.motd.maven:os-maven-pluginwith Maveniverse Nisse (eu.maveniverse.maven.nisse:extension:0.4.4) in.mvn/extensions.xml— os-maven-plugin tries to mutate unmodifiable session properties in Maven 4. Nisse is a drop-in replacement compatible with both Maven 3 and 4. Also adds-Dnisse.compat.osDetectorto.mvn/maven.config.com.gradle:develocity-maven-extensionandcom.gradle:gradle-enterprise-maven-extension— these depend onorg.slf4j.impl.SimpleLoggerwhich is not available in Maven 4's classpath.These changes fix ~7 repos in the Maven 4 compatibility test suite (gnodet/maven4-testing).
Test plan
Claude Code on behalf of Guillaume Nodet
🤖 Generated with Claude Code