For those working on moving debian ruby library packaging to gem2deb, you can exempt specific hits from the slick built in ‘require rubygems’ test by adding the path to debian/require-rubygems.overrides.

For instance, to exempt this:

debian/chef/usr/lib/ruby/vendor_ruby/chef/provider/package/rubygems.rb: require 'rubygems'
debian/chef/usr/lib/ruby/vendor_ruby/chef/provider/package/rubygems.rb: require 'rubygems/version'
debian/chef/usr/lib/ruby/vendor_ruby/chef/provider/package/rubygems.rb: require 'rubygems/dependency'
debian/chef/usr/lib/ruby/vendor_ruby/chef/provider/package/rubygems.rb: require 'rubygems/spec_fetcher'
debian/chef/usr/lib/ruby/vendor_ruby/chef/provider/package/rubygems.rb: require 'rubygems/platform'
debian/chef/usr/lib/ruby/vendor_ruby/chef/provider/package/rubygems.rb: require 'rubygems/format'
debian/chef/usr/lib/ruby/vendor_ruby/chef/provider/package/rubygems.rb: require 'rubygems/dependency_installer'
debian/chef/usr/lib/ruby/vendor_ruby/chef/provider/package/rubygems.rb: require 'rubygems/uninstaller'
debian/chef/usr/lib/ruby/vendor_ruby/chef/provider/package/rubygems.rb: require 'rubygems/specification'
debian/chef/usr/lib/ruby/vendor_ruby/chef/providers.rb: require 'chef/provider/package/rubygems'
Found some 'require rubygems' without overrides (see above).
ERROR: Test "require-rubygems" failed. Exiting.
dh_auto_install: dh_ruby --install /«BUILDDIR»/chef-0.10.0/debian/chef returned exit code 1
make: *** [binary] Error 1
dpkg-buildpackage: error: fakeroot debian/rules binary gave error exit status 2

debian/require-rubygems.overrides should contain:

debian/chef/usr/lib/ruby/vendor_ruby/chef/provider/package/rubygems.rb
debian/chef/usr/lib/ruby/vendor_ruby/chef/providers.rb