anchor.diff:    # no tests
     doCheck = false;
   
  +  postInstall = ''
  +    mkdir -p $out/bin
  +    cp check-kernel.bash $out/bin/
  +    patchShebangs $out/bin
  +  '';
  +
     meta = with lib; {
       description = "JupyterHub Spawner using systemd for resource isolation";
       homepage = "https://github.com/jupyterhub/systemdspawner";
       license = licenses.bsd3;
  -    maintainers = [ maintainers.costrouc ];
  +    maintainers = with maintainers; [ costrouc erictapen ];
     };
   }
  
positive.code: { lib
  , buildPythonPackage
  , fetchPypi
  , jupyterhub
  , tornado
  , bash
  
negative.code:   pname = "jupyterhub-systemdspawner";
    version = "0.15.0";
  
    src = fetchFromGitHub {
      owner = "jupyterhub";
      repo = "systemdspawner";
      # Corresponds to 0.15.0
      # Upstream didn't tag the latest release:
      # https://github.com/jupyterhub/systemdspawner/issues/89
      rev = "7d7cf42db76d9cfa5a4bc42fff14943877ac570b";
      sha256 = "sha256-EUCA+CKCeYr+cLVrqTqe3Q32JkbqeALL6tfOnlVHk8Q=";
    };
  
    propagatedBuildInputs = [
      jupyterhub
      tornado
    ];
  
    buildInputs = [ bash ];
  
    postPatch = ''
      substituteInPlace systemdspawner/systemd.py \
  