anchor.diff:      zlib bzip2 ncurses libpng flex bison libX11 libICE
       xproto freetype t1lib gd libXaw icu ghostscript ed 
       libXt libXpm libXmu libXext xextproto perl libSM 
  -    ruby expat curl libjpeg python
  +    ruby expat curl libjpeg python fontconfig
     ];
   
     configureFlags = [ "--with-x11" 
  
positive.code:     NIX_CFLAGS_COMPILE="$NIX_CFLAGS_COMPILE -I${freetype}/include/freetype2"
      NIX_CFLAGS_COMPILE="$NIX_CFLAGS_COMPILE -I${icu}/include/layout";
  
      ./Build
    '') ["minInit" "doUnpack" "addInputs" "defEnsureDir"];
  
    doPostInstall = fullDepEntry(''
  
negative.code:     platforms = args.lib.platforms.linux ++ args.lib.platforms.freebsd ;
    };
  }
  