anchor.diff:                       ${lib.optionalString (turbomole != null) "--set-default TURBOMOLE ${turbomole}/bin"} \
                        ${lib.optionalString (gaussian != null) "--set-default GAUSSIAN ${gaussian}/bin"}
       done
  +
  +    runHook preInstall
     '';
   
     postFixup = ''
  
positive.code:     sha256 = "09a5a0zbkganvx9g70vcjbr0i77a9kh095vgh0k0rm0lmkay1cd2";
    };
  
    nativeBuildInputs = [ makeWrapper which ];
    buildInputs = [ gfortran blas liblapack fftw python ];
  
    patches = [
      # tests fail to create directories
  
negative.code:     patchShebangs wfoverlap/scripts
    '';
  
    installPhase = ''
      runHook preInstall
  
      mkdir -p $out/bin $out/share/sharc/tests
  
      cd source
  