spice-gtk: fix darwin build (#368148)

      "-Dcoroutine=gthread" # Fixes "Function missing:makecontext"

    ];

  postPatch = ''

  postPatch =

    ''

      # get rid of absolute path to helper in store so we can use a setuid wrapper

      substituteInPlace src/usb-acl-helper.c \

      --replace 'ACL_HELPER_PATH"/' '"'

        --replace-fail 'ACL_HELPER_PATH"/' '"'

      # don't try to setcap/suid in a nix builder

      substituteInPlace src/meson.build \

      --replace "meson.add_install_script('../build-aux/setcap-or-suid'," \

        --replace-fail "meson.add_install_script('../build-aux/setcap-or-suid'," \

        "# meson.add_install_script('../build-aux/setcap-or-suid',"

      patchShebangs subprojects/keycodemapdb/tools/keymap-gen

    ''

    + lib.optionalString stdenv.hostPlatform.isDarwin ''

      # don't use version script and don't export symbols

      substituteInPlace src/meson.build \

        --replace-fail "spice_gtk_version_script = [" "# spice_gtk_version_script = [" \

        --replace-fail ",--version-script=@0@'.format(spice_client_glib_syms_path)" "'"

    '';

  meta = with lib; {