> Portability is nice but the reality is that almost no one uses it That's not true — Everybody actually uses it in practice. The .jar you grab from Maven Cent

> Portability is nice but the reality is that almost no one uses it That's not true — Everybody actually uses it in practice. The .jar you grab from Maven Central just works unconditionally, your CI server builds one single artefact that runs on your Mac and on the Linux server.