Release

To make sure everything works:

./gradlew clean build check

To format everything using Spotless:

./gradlew spotlessApply

First, try publishing to maven local:

./gradlew publishToMavenLocal

If that works, then publish to Sonatype's staging repository and close:

./gradlew publishToSonatype closeSonatypeStagingRepository

Inspect this in Sonatype OHSSH repository. Delete the staging repository after inspection.

And then to promote it:

./gradlew publishToSonatype closeAndReleaseSonatypeStagingRepository

If it looks weird that you have to specify "publishToSonatype" with another task, that's because it is weird.

Gradle Signing

If you run into errors with signing doing a publishToSonaType, this is common and underdocumented.

No value has been specified for property 'signatory.keyId'.

For the signatory.keyId error message, you need to set signing.gnupg.keyName if you are using GPG 2.1 and a Yubikey 4.

Note you need to use gpg -K and pick only the LAST EIGHT CHARS of the public signing key.

signing.gnupg.keyName = 5F798D53

Also note that if you are using a Yubikey, it'll require you to type in a PIN, which screws up Gradle.

gpg: signing failed: No pinentry

So you need to use pinentry-mode loopback, which is helpfully supplied by passphrase.

sbt/sbt-pgp#142
https://wiki.archlinux.org/index.php/GnuPG#Unattended_passphrase
https://github.com/gradle/gradle/pull/1703/files#diff-790036df959521791fdafe474b673924

You want this specified only the command line, i.e.

$ HISTCONTROL=ignoreboth ./gradlew publishToMavenLocal -Psigning.gnupg.passphrase=$PGP_PASSPHRASE --info

gpg can't be run in parallel. You'll get this error message.

gpg: signing failed: Cannot allocate memory

Do not use -Porg.gradle.parallel=false and don't use --parallel when publishing.