Ruby

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Rubygems is a package management system to extend the ruby language.

Gems are packaged wonky in portage so this page will explain how to work with rubygems rather than fight it. Arch wiki outlines a similar method.

Emerge ruby & rubygems:

root #emerge ruby rubygems

Remove bunk gems:

root #emerge -C dev-ruby/rake dev-ruby/racc dev-ruby/json dev-ruby/rdoc

Flush bunk gems bad specs:

root #mv /usr/local/lib64/ruby/gems/2.1.0/specifications/ /usr/local/lib64/ruby/gems/2.1.0/specifications.backup

Fetch gems via rubygems:

root #gem install rdoc json rake racc

rubygems-update

update gem system:

root #update_rubygems
root #gem update --system
root #gem pristine --all

Now you're ready to use gem to manage gems. The reason this came about is that bundler can't be run with out conflicts.

ruby on rails

root #gem install rails
root #rails new testproject
root #cd testproject
root #bundle install