Hey fellow Guix hackers, I just published a blog post about Guix targetting Ruby programmers, detailing the ways in which Guix can replace the not-so-good RVM and Bundler tools. I know there's a few Rubyists lurking in here, so, enjoy!
http://dthompson.us/ruby-on-guix.html -- David Thompson GPG Key: 0FF1D807