anchor.diff:  , fetchurl
   , gettext
   
  -, atk
  -, bzip2
   , cairo
   , gdk-pixbuf
   , glib
   , gobject-introspection
   , gst-plugins-base
   , gstreamer
  -, json-glib
   , libdrm
  -, libxkbcommon
   , mesa_noglu
   , pango
   , wayland
  
positive.code:     sha256 = "14daxqrid5039xmq9yl4pk86awng1n9zgl6ysblhc4gw2ifzp7b8";
    };
  
    postPatch =
    /* Don't build examples */ ''
      sed -i Makefile.{am,in} \
        -e "s/^\(SUBDIRS +=.*\)examples\(.*\)$/\1\2/"
    '' +
    /* Fix library name in pkg-config file */ ''
      sed -i cogl-pango/cogl-pango-2.0-experimental.pc.in \
        -e 's|-lcoglpango|-lcogl-pango|'
    '' + optionalString (!doCheck)
    /* The configure switch does not completely disable
       tests from being built */ ''
      sed -i Makefile.{am,in} \
        -e "s/^\(SUBDIRS =.*\)test-fixtures\(.*\)$/\1\2/" \
        -e "s/^\(SUBDIRS +=.*\)tests\(.*\)$/\1\2/" \
        -e "s/^\(.*am__append.* \)tests\(.*\)$/\1\2/"
    '';
  
    configureFlags = [
      "--disable-installed-tests"
  
negative.code:     "--with-x"
    ];
  
    doCheck = false;
  
    meta = with stdenv.lib; {
      description = "2D graphics library with support for multiple output devices";
  