anchor.diff:    installPhase = ''
       mkdir -p $out/bin/
       mkdir -p $out/lib64/
  -
       mv usr/bin/dcvviewer $out/bin/dcvviewer
       mv usr/lib64/* $out/lib64/
  -
       mkdir -p $out/libexec/dcvviewer
       mv usr/libexec/dcvviewer/dcvviewer $out/libexec/dcvviewer/dcvviewer
       patchelf \
         --set-interpreter $(cat $NIX_CC/nix-support/dynamic-linker) \
         $out/libexec/dcvviewer/dcvviewer
  -
       # Fix the wrapper script to have the right basedir.
       sed -i "s#basedir=/usr#basedir=$out#" $out/bin/dcvviewer
  +    mv usr/share $out/
   
  -    mv usr/share $out/
       ${glib.dev}/bin/glib-compile-schemas $out/share/glib-2.0/schemas
   
  -    # broken symlink, seems to give a warning message if i don't delete it
  -    rm $out/lib64/dcvviewer/gio/modules/libdconfsettings.so
  +    # we already ship libffi.so.7
  +    ln -s ${lib.getLib libffi}/lib/libffi.so $out/lib64/libffi.so.6
     '';
   
     meta = with lib; {
       description = "High-performance remote display protocol";
       homepage = "https://aws.amazon.com/hpc/dcv/";
       license = licenses.unfree;
  -    platforms = platforms.linux;
  +    platforms = [ "x86_64-linux" ];
       maintainers = with maintainers; [ rmcgibbo ];
     };
   }
  
positive.code: , gtk3
  , libselinux
  , libxml2
  , python3Packages
  , cpio
  , autoPatchelfHook
  }:
  
  stdenv.mkDerivation rec {
    pname = "nice-dcv-client";
    version = "2020.2.1737-1";
  
    src =
      fetchurl {
        url = "https://d1uj6qtbmh3dt5.cloudfront.net/2020.2/Clients/nice-dcv-viewer-${version}.el8.x86_64.rpm";
        sha256 = "sha256-SUpfHd/Btc07cfjc3zx5I5BiNatr/c4E2/mfJuU4R1E=";
      };
  
    nativeBuildInputs = [ autoPatchelfHook python3Packages.rpm ];
    unpackPhase = ''
      rpm2cpio $src | ${cpio}/bin/cpio -idm
    '';
  
negative.code: { lib
  , stdenv
  , fetchurl
  , glib
  , libX11
  