This buildfile is part of projectlombok.org. It makes maven-compatible repositories. Your lombok clone does not include the central.sonatype.org deployment keys. Contact the core maintainers for these keys; place them in ${gpg.keyrings} to continue. Your lombok clone does not include an central.sonatype.org authToken, needed to upload and deploy to maven central. Contact the core maintainers. gpg (Gnu Privacy Guard) is not on your path, or ant property exe.gpg is not properly set. Install gpg/add it to your PATH. Alternatively, run with ant -Dexe.gpg=/loc/to/gpg to continue. The artifact has been published to staging. Now go to https://central.sonatype.org/, log in, 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.