So, I've merged 66 patches now which were tracked across these 3 bugs so the master branch now contains the ruby-rails gem! I think I've even done this without breaking anything, I believe all the packages I added or changed build, and all of there dependencies as reported by guix lint build too. If anyone still has any comments on the patches, I'd still love to hear them. Thanks for everyone who's reviewed these patches so far, and thanks to Ben for kicking this work off many months ago. Chris