anchor.diff:  
   , audit_lib
   , dbus
  +, egl-wayland
  +#, fontutil
   , libbsd
   , libdmx
   , libdrm
  
positive.code:       sha256 = "a732502f1db000cf36a376cd0c010ffdbf32ecdd7f1fa08ba7f5bdf9601cc197";
      };
      "1.20" = {
        version = "1.19.99.901";
        sha256 = "3654e69e19426d9738381abbe0c325082be42971535eb791fb3604f60499a36e";
      };
    };
    source = sources."${channel}";
  
negative.code:   ];
  
    postPatch = optionalString (versionAtLeast channel "1.20") ''
      # Fix file missing in release
      cat > include/xwayland-config.h.meson.in <<'EOF'
      /* xwayland-config.h.meson.in: not at all generated */
  
      #pragma once
  
      #include <dix-config.h>
  
      /* Build glamor support for Xwayland */
      #mesondefine XWL_HAS_GLAMOR
  
      /* Build eglstream support for Xwayland */
      #mesondefine XWL_HAS_EGLSTREAM
  
      EOF
  
      # Xwin is an unconditional dependency.
      sed -i include/meson.build \
        -e '/xwin-config.h/,+2 d'
  