anchor.diff:    version = "4.1.0";
   
     src = fetchFromGitHub {
  -    owner  = "eXeC64";
  -    repo   = "imv";
  -    rev    = "v${version}";
  +    owner = "eXeC64";
  +    repo = "imv";
  +    rev = "v${version}";
       sha256 = "0gk8g178i961nn3bls75a8qpv6wvfvav6hd9lxca1skaikd33zdx";
     };
   
  -  preBuild = ''
  -    # Version is 4.0.1, but Makefile was not updated
  -    sed -i 's/echo v4\.0\.0/echo v4.0.1/' Makefile
  -  '';
  -
  -  nativeBuildInputs = [
  -    asciidoc
  -    cmocka
  -    docbook_xsl
  -    libxslt
  -  ];
  +  nativeBuildInputs = [ asciidoc cmocka docbook_xsl libxslt ];
   
     buildInputs = [
       freeimage
  +    icu
       libGLU
  +    libjpeg_turbo
       librsvg
       libxkbcommon
  +    netsurf.libnsgif
       pango
       pkgconfig
       wayland
  -    icu
     ];
   
     installFlags = [ "PREFIX=$(out)" "CONFIGPREFIX=$(out)/etc" ];
  +
  +  makeFlags = [ "BACKEND_LIBJPEG=yes" "BACKEND_LIBNSGIF=yes" ];
   
     postFixup = ''
       # The `bin/imv` script assumes imv-wayland or imv-x11 in PATH,
  
positive.code: 
    meta = with stdenv.lib; {
      description = "A command line image viewer for tiling window managers";
      homepage    = "https://github.com/eXeC64/imv";
      license     = licenses.gpl2;
      maintainers = with maintainers; [ rnhmjoj markus1189 ];
      platforms   = platforms.all;
    };
  }
  
negative.code: { asciidoc
  , cmocka
  , docbook_xsl
  , fetchFromGitHub
  , fontconfig
  , freeimage
  , icu
  , libGLU
  , libheif
  , libjpeg_turbo
  , libpng
  , librsvg
  , libtiff
  , libxkbcommon
  , libxslt
  , netsurf
  , pango
  , pkgconfig
  , stdenv
  , wayland
  }:
  
  stdenv.mkDerivation rec {
  