You are right, the kernel is still a dependency. But I canno solve all problems - at least my proposal is not worse than mock, and it solves some major nuisances with it, especially the difficulty of debugging build issues.

I'll add the note about kernel importance in the docs, though. Thanks!

Been there with FPM, too. This is probably handy for platform-independent applications like Java, maybe Python, but with anything native you'll have to compile things on the lowest-common-denominator of glibc out of all the systems you're targeting, and that means for many applications you'll be missing features that you could take advantage on newer systems.