Disabling document generation on gem install


Ruby gem installations sometimes can be very slow because of the on-the-fly document generation post-process.

You can disable this behaviour by providing following options to gem command:

For older versions:

$ gem install rails --no-ri --no-rdoc

For newer versions:

$ gem install rails --no-document

If you want to make this behaviour as default, you just need to enter following line into ~/.gemrc file:

gem: --no-document

Please note that, bundle already skips document generation process by default, above configuration only needed for the installation by gem command.