anchor.diff:          name = "pysisrc";
         };
   
  -  binSearchPath = with lib; makeSearchPath "bin" ([
  -    jmol
  -    multiwfn
  -    xtb
  -    openmolcas
  -    pyscf
  -    psi4
  -    wfoverlap
  -    nwchem
  -  ] ++ lists.optional (orca != null) orca
  +  binSearchPath = with lib; makeSearchPath "bin" ([ ]
  +    ++ lists.optional (jmol != null) jmol
  +    ++ lists.optional (multiwfn != null) multiwfn
  +    ++ lists.optional (xtb != null) xtb
  +    ++ lists.optional (openmolcas != null) openmolcas
  +    ++ lists.optional (pyscf != null) pyscf
  +    ++ lists.optional (psi4 != null) psi4
  +    ++ lists.optional (wfoverlap != null) wfoverlap
  +    ++ lists.optional (nwchem != null) nwchem
  +    ++ lists.optional (orca != null) orca
       ++ lists.optional (turbomole != null) turbomole
       ++ lists.optional (gaussian != null) gaussian
       ++ lists.optional (cfour != null) cfour
  
positive.code:         formchk_cmd = "${gaussian}/bin/formchk";
          unfchk_cmd = "${gaussian}/bin/unfchk";
        };
        text = with lib.lists; lib.generators.toINI {} (builtins.listToAttrs ([
          { name = "openmolcas"; value.cmd = "${openmolcas}/bin/pymolcas"; }
          { name = "psi4"; value.cmd = "${psi4Wrapper}"; }
          { name = "wfoverlap"; value.cmd = "${wfoverlap}/bin/wfoverlap.x"; }
          { name = "multiwfn"; value.cmd = "${multiwfn}/bin/Multiwfn"; }
          { name = "jmol"; value.cmd = "${jmol}/bin/jmol"; }
          { name = "xtb"; value.cmd = "${xtb}/bin/xtb"; }
        ] ++ optional (gaussian != null) { name = "gaussian16"; value = gaussian16Conf; }
          ++ optional (orca != null) { name = "orca"; value.cmd = "${orca}/bin/orca"; }
        ));
      in
  
negative.code:  autograd, dask, distributed, h5py, jinja2, matplotlib, numpy, natsort, pytest, pyyaml, rmsd, scipy,
   sympy, scikitlearn, qcengine, ase, xtb-python, openbabel-bindings,
   # Runtime dependencies
   runtimeShell, jmol ? null, multiwfn ? null, xtb ? null, openmolcas ? null,
   pyscf ? null, psi4 ? null, wfoverlap ? null, nwchem ? null, orca ? null,
   turbomole ? null, gaussian ? null, gamess-us ? null, cfour ? null, molpro ? null,
   # Test dependencies
   openssh,
  