pkgs/development/tools/build-managers/drake/Gemfile.lock

   1 GEM
   2   remote: https://rubygems.org/
   3   specs:
   4     comp_tree (1.1.3)
   5     drake (0.9.2.0.3.1)
   6       comp_tree (>= 1.1.3)
   7
   8 PLATFORMS
   9   ruby
  10
  11 DEPENDENCIES
  12   drake
  13
  14 BUNDLED WITH
  15    2.1.4