I honestly skimmed the article and didn't read it deeply because I have to run in a bit. But the fact that GUIX is a language-agnostic package manager sounds very neat. I write Go code and one of the things I had to cope with in the beginning was not having a really good package management system. Go still gets criticized for this (although we can always vendor our apps/packages to make sure all dependencies are included). It seems as though GUIX could be used as a package management solution in Go. It might be worthwhile for someone to write a tutorial on GUIX + Go dev.