I love it, but the configuration is messy. Many packages are out of date, but the Scheme syntax makes it easy to update them and build them on your system.
Problem is, getting these updates merged with the upstream never happens generally speaking (I have several open patches), so you end up having two working trees in your local Guix repo, and heaven forbid you run guix pull on the wrong branch.
the best resource in Guix is searching the irc logs or reaching out to their irc directly. The manual only gets you so far