Hi, These patches are all working towards the popular Ruby web frameworks (Rails/Sinatra). I tried where possible to do at least rudimentary testing when dependency cycles arose, and fall back to the source code on github when the gem on rubygems didn't contain tests. Actually these are the easier parts to package - the deeper hole is ExecJS which requires therubyracer at test time which requires v8 and thus a bunch of chromium-related packages. Is anyone thinking about working on that? Unfortunately none of these builds are reproducible because rubygems in Guix generally aren't. For one, this is because .gem files are archives whose contents are timestamped. ... and thanks! ben