This buildfile is part of projectlombok.org. It builds the mapstruct-lombok binding; we think the version on mavencentral is the last version that is ever needed; the code itself is trivial and exists as a separate dependency solely because it is itself dependent on both lombok and mapstruct. lombok.mapstruct.NotifierHider$AstModificationNotifier The artifact has been published to staging. Now go to https://oss.sonatype.org/ and log in as Reinier, then doublecheck if all is well and 'release' it. mvn is not on your path and/or MAVEN_HOME is not set. Add mvn to your path or set MAVEN_HOME to continue.