old_contents: import portage
  
  portdb = portage.portdb
  portdb.porttrees = [portdb.porttree_root]
  for package in portdb.cp_all():
  	slot_dict = {}
  	for package_v in portdb.cp_list(package):
  		slot, iuse, inherited = portdb.aux_get(package_v, ['SLOT', 'IUSE', 'INHERITED'])
  		slot_dict.setdefault(slot, {})[package_v] = (iuse, inherited)
  	for slot, package_v_dict in slot_dict.items():
  		if 'ruby_targets_' in iuse:
  			package_v_best = portage.best(list(package_v_dict))
  			category, pkgname, version, revision = portage.catpkgsplit(package_v_best)
  			print(category + ' ' + pkgname + ' ' + version + ' ' + revision + ' ' + slot, end=' ')
  			if 'ruby_targets_ruby19' in iuse:
  				print('ruby19', end=' ')
  			else:
  				print('nil', end=' ')
  			if 'ruby_targets_ruby20' in iuse:
  				print('ruby20', end=' ')
  			else:
  				print('nil', end=' ')
  			if 'ruby_targets_ruby21' in iuse:
  				print('ruby21', end=' ')
  			else:
  				print('nil', end=' ')
  			print()
  
new_contents: import portage
  
  portdb = portage.portdb
  portdb.porttrees = [portdb.porttree_root]
  for package in portdb.cp_all():
  	slot_dict = {}
  	for package_v in portdb.cp_list(package):
  		slot, iuse, inherited = portdb.aux_get(package_v, ['SLOT', 'IUSE', 'INHERITED'])
  		slot_dict.setdefault(slot, {})[package_v] = (iuse, inherited)
  	for slot, package_v_dict in slot_dict.items():
  		if 'ruby_targets_' in iuse:
                          package_v_best = portage.best(list(package_v_dict))
                          category, pkgname, version, revision = portage.catpkgsplit(package_v_best)
                          if category == 'dev-ruby':
                              print(category + ' ' + pkgname + ' ' + version + ' ' + revision + ' ' + slot, end=' ')
                              if 'ruby_targets_ruby19' in iuse:
                                      print('ruby19', end=' ')
                              else:
                                      print('nil', end=' ')
                              if 'ruby_targets_ruby20' in iuse:
                                      print('ruby20', end=' ')
                              else:
                                      print('nil', end=' ')
                              if 'ruby_targets_ruby21' in iuse:
                                      print('ruby21', end=' ')
                              else:
                                      print('nil', end=' ')
                              print()
  
subject: Undo ebd2a7