no 'ruby version manager', eg 'chruby, rvm, or rbenv' make any sense in the nix/guix world. the article would have done a disservice to itself to go into detail

no 'ruby version manager', eg 'chruby, rvm, or rbenv' make any sense in the nix/guix world. the article would have done a disservice to itself to go into detail on each one, when the goal was really to show how to manage ruby projects in guix.