new_contents: from social_core.backends.gitlab import GitLabOAuth2
  
  
  class ShackGitLabOauth2(GitLabOAuth2):
      name = 'shackgitlab'
      API_URL = 'https://git.shackspace.de'
      AUTHORIZATION_URL = 'https://git.shackspace.de/oauth/authorize'
      ACCESS_TOKEN_URL = 'https://git.shackspace.de/oauth/token'
  
subject: Add shackspace gitlab oauth