Hello, "jgart" writes: > Hi Guix, > > We've (Ryan, David, Raghav, and others) started packaging crystal for guix: https://crystal-lang.org/ > > This patch adds an old version of ruby that is required by the crystal > language bootstrap process. This is related to 49142. Since the crystal-lang patches haven't landed in more than a year, I think it's safer to punt on this. Closing. Thanks! Maxim