anchor.diff:  { stdenv, fetchzip, netcdf, netcdfcxx4, gsl, udunits, antlr, which, curl, flex, coreutils }:
   
   stdenv.mkDerivation rec {
  -  version = "4.9.3";
  +  version = "4.9.5";
     pname = "nco";
   
     nativeBuildInputs = [ flex which ];
  
positive.code: 
    src = fetchzip {
      url = "https://github.com/nco/nco/archive/${version}.tar.gz";
      sha256 = "0jpv2hw2as5wh06ac4hkhy7964w81pm7kp6nbwhmiyfzjzhwqhjy";
    };
  
    prePatch = ''
  
negative.code:     substituteInPlace src/nco/nco_fl_utl.c \
        --replace "/bin/mv" "${coreutils}/bin/mv"
    '';
  
    meta = {
      description = "NetCDF Operator toolkit";
      longDescription = "The NCO (netCDF Operator) toolkit manipulates and analyzes data stored in netCDF-accessible formats, including DAP, HDF4, and HDF5";
  