anchor.diff:      maintainers = with maintainers; [ guibert ];
       platforms = platforms.linux;
     };
  +
   }
  
positive.code:     qtsvg
    ];
  
    propagatedBuildInputs = [
      (python3.withPackages (ps: with ps; [ numpy matplotlib mpi4py ]))
    ];
  
negative.code: { lib, stdenv, fetchFromGitLab, fetchurl
  , boost, cmake, ffmpeg, qtbase, qtx11extras
  , qttools, qtxmlpatterns, qtsvg, gdal, gfortran, libXt, makeWrapper
  , mkDerivation, ninja, mpi, python3, tbb, libGLU, libGL
  , withDocs ? true
  }:
  
  let
    version = "5.9.1";
    major = "5.9";
  
    docFiles = [
      (fetchurl {
        url = "https://www.paraview.org/paraview-downloads/download.php?submit=Download&version=v${major}&type=data&os=Sources&downloadFile=ParaViewTutorial-${version}.pdf";
        name = "Tutorial.pdf";
        sha256 = "1knpirjbz3rv8p8n03p39vv8vi5imvxakjsssqgly09g0cnsikkw";
      })
      (fetchurl {
        url = "https://www.paraview.org/paraview-downloads/download.php?submit=Download&version=v${major}&type=data&os=Sources&downloadFile=ParaViewGettingStarted-${version}.pdf";
        name = "GettingStarted.pdf";
        sha256 = "14xhlvg7s7d5amqf4qfyamx2a6b66zf4cmlfm3s7iw3jq01x1lx6";
      })
      (fetchurl {
        url = "https://www.paraview.org/paraview-downloads/download.php?submit=Download&version=v${major}&type=data&os=Sources&downloadFile=ParaViewCatalystGuide-${version}.pdf";
        name = "CatalystGuide.pdf";
        sha256 = "133vcfrbg2nh15igl51ns6gnfn1is20vq6j0rg37wha697pmcr4a";
      })
    ];
  
  in mkDerivation rec {
    pname = "paraview";
    inherit version;
  
    src = fetchFromGitLab {
      domain = "gitlab.kitware.com";
  