nixpkgs/pkgs/applications/version-management/redmine
..
2002_FHS_through_env_vars.patch
2003_externalize_session_config.patch
2004_FHS_plugins_assets.patch
bootstrap.nix
default.nix
Gemfile.lock
Gemfile.nix
generate_nix_requirements.rb
README

to regenerate Gemfile.nix and Gemfile.lock you need to

  % nix-build bootstrap.nix
  % cp result/Gemfile.nix ./
  % cp result/Gemfile.lock ./