anchor.diff:  
     networkx = callPackage ../development/python-modules/networkx { };
   
  -  neuron-mpi = pkgs.neuron-mpi.override { inherit python; };
  -
  -  neuron = pkgs.neuron.override { inherit python; };
  +  neuron-mpi = toPythonModule (pkgs.neuron-mpi.override { inherit python; });
  +
  +  neuron = toPythonModule (pkgs.neuron.override { inherit python; });
   
     neuronpy = callPackage ../development/python-modules/neuronpy { };
   
  
positive.code: 
    pyblake2 = callPackage ../development/python-modules/pyblake2 { };
  
    pyblock = callPackage ../development/python-modules/pyblock { };
  
    pybluez = callPackage ../development/python-modules/pybluez {
      inherit (pkgs) bluez;
  
negative.code:     inherit (pkgs) udev;
    };
  
    pyunbound = toPythonModule (callPackage ../tools/networking/unbound/python.nix { });
  
    pyunifi = callPackage ../development/python-modules/pyunifi { };
  
  