"Officially" isn't really a thing here, I feel. I mean the `purs` (formerly `psc`) compiler just gets given a list of .purs files from your build setup (pulp, custom make files, a little custom program, whatever) and recompiles what changed to the given output paths. I think they just converged on bower by accident (whatever it professes to offer, the sub-set of features required here for PS apparenty just-worked sufficiently well) but really anyone can manage their packages however they like.

psc-package does* very much look like it's going to be the "sanctioned/endorses/semi-official" tooling for pkg-mgmt one way or the other.

This popped up just now in my feed reader: https://qiita.com/kimagure/items/0d9354900d7a7dbd3864