code: def get_requirements_information(self, path: Path) -> Tuple[RequirementsOptions, Optional[str]]:
          
          if self.pipfile_location is not None:
              pipfile = path / self.pipfile_location / "Pipfile"
              pipfile_lock = path / self.pipfile_location / "Pipfile.lock"
  
              pipfile_exists = pipfile.exists()
              pipfile_lock_exists = pipfile_lock.exists()
  
              if pipfile_exists and pipfile_lock_exists:
                  option = RequirementsOptions.pipfile
                  return option, self.hash_file_contents(option, pipfile_lock)
              elif pipfile_exists:
                  raise BuildError("Only the Pipfile is included in the repository, Arca does not support that.")
              elif pipfile_lock_exists:
                  raise BuildError("Only the Pipfile.lock file is include in the repository, Arca does not support that.")
  
          if self.requirements_location:
              requirements_file = path / self.requirements_location
  
              if requirements_file.exists():
                  option = RequirementsOptions.requirements_txt
                  return option, self.hash_file_contents(option, requirements_file)
  
          return RequirementsOptions.no_requirements, None
docs: Returns the information needed to install requirements for a repository - what kind is used and the hash
          of contents of the defining file.