Thanks a lot for your answer. I do understand the problem, but I’m not sure how I would implement the solutions 2 & 3 (that I would prefer over buildFhsUserEnv as it makes it more complicated to use). I can easily see how to patching or replacing the binary (this replacing idea is neat actually) in a “normal” scenario where I first get the file before running the compilation. Here, mvn seems to both download and compile at the same time, so I don’t know how to “hook” into it (btw, for people interested to package directly the pre-built .jar, the solution is here).
So do you know how I could hook into mvn to do that? As you say, this should be fairly frequent in java, so it would be great to provide a way to do that patching automatically (or at least provide an option to do it automatically). Meanwhile, I created an issue here.