An Open Code Base Is Not Yet an Open Source Project

A few weeks ago someone suggested I should try to integrate IntelliJ IDEA's static analysis rules into Qulice, our aggregator of Checkstyle, PMD, FindBugs, and some other analyzers. I do love IDEA's rules—some of them are unique and very useful. I asked whether I could find them somewhere in Maven Central (they are written in Java) and the answer was "You'll have to figure out yourself how to use them, but they are open source." Here comes my opinion about this sit...