fix arguments of functions

mail-server/postfix.nix

@@ -14,7 +14,7 @@
 #  You should have received a copy of the GNU General Public License
 #  along with this program. If not, see <http://www.gnu.org/licenses/>
 
-{ config, pkgs, ... }:
+{ config, pkgs, valias_file, vaccounts_file, ... }:
 {
   services.postfix = {
     enable = true;