It has been a long time since I used maven, but I used to be a user. The biggest problem with maven (except for quality, which I think is temporal) is that you

It has been a long time since I used maven, but I used to be a user. The biggest problem with maven (except for quality, which I think is temporal) is that you cannot reproduce a build. The simple task of 'given a jar artifact(1), and its md5, full source code and pom, reproduce it from scratch' never works. (One of the reasons being the jar tool that stores .class file dates inside the jar). Another reason is that maven self-updates, and sometimes this gets in the way of being able to build an older project. I'm pretty sure there are several jars in biblio that cannot be recreated (never mind the md5) without significant hacking. (1) there is a difference between 'artefact' and 'artifact', but somehow the semantics became confused.