anchor.diff:      maintainers = with maintainers; [ guibert ];
       platforms = platforms.linux;
     };
  -
   }
  
positive.code:   ];
  
    buildInputs = [
      libGLU libGL
      libXt
      mpi
      tbb
  
negative.code:     qtsvg
    ];
  
    postInstall = let docDir = "$out/share/paraview-${lib.versions.majorMinor version}/doc"; in
      lib.optionalString withDocs ''
        mkdir -p ${docDir};
        for docFile in ${lib.concatStringsSep " " docFiles}; do
  