Hi everyone, I'm trying to figure out how to convert a Ruby project from using bundler to using guix directly, so I can sidestep rvm/rbenv/bundle.
I found two articles about this, but neither seems to go into the detail of pinning versions to get a really reproducible environment. They just provide ideas. 1. RUBY.org guix notes by pjotr: https://github.com/pjotrp/guix-notes/blob/master/RUBY.org 2. Ruby on Guix article by David Thompson: https://dthompson.us/posts/ruby-on-guix.html Anyway, I wanted to share a small ruby script I wrote which will parse your Gemfile.lock file and shell out to call `guix import gem` with the version specified in your lockfile. I'm actually stuck here, because I don't know how to build a guix package definition out of these snippets. ```ruby #!/usr/bin/env ruby require 'bundler' parser = Bundler::LockfileParser.new(File.read(ARGV[0])) ruby_gems = parser.specs.select { |s| spec.is_a?(Bundler::Source::Rubygems) } ruby_gems.each { |g| puts %x(guix import gem #{g.name}@#{g.version}) } ``` Usage: ./gemfile_import.rb Gemfile.lock this worked for me with a gemfile.lock of a few hundred specs. Obviously the resulting package definition will be pretty big, but I assume that's okay. I'm particularly hoping to script the import so that I can use guix at work in parallel with my colleagues on other systems who prefer to use bundler. I don't know how updating gems would work yet in this setup. I wonder a) whether anybody else cares about this problem and b) whether anybody has any advice for building the final package definition? I will keep looking through the docs, but I am quite new to guix and haven't built my own package definition before. All the best, Dan
