code: def check_other(self):
          
          if self.reqs:
              self.stdout.write(self.style.ERROR("\nOnly pypi and github based requirements are supported:"))
              for name, req in self.reqs.items():
                  if "dist" in req:
                      pkg_info = "{dist.project_name} {dist.version}".format(dist=req["dist"])
                  elif "url" in req:
                      pkg_info = "{url}".format(url=req["url"])
                  else:
                      pkg_info = "unknown package"
                  self.stdout.write(self.style.BOLD("{pkg_info:40} is not a pypi or github requirement".format(pkg_info=pkg_info)))
docs: If the requirement is frozen somewhere other than pypi or github, skip.
  
          If you have a private pypi or use --extra-index-url, consider contributing
          support here.