gammu: add some DB support

pkgs/applications/misc/gammu/default.nix

···
 { stdenv, fetchurl, python, pkgconfig, cmake, bluez, libusb1, curl
-, libiconv, gettext, sqlite }:
+, libiconv, gettext, sqlite
+, dbiSupport ? false, libdbi ? null, libdbiDrivers ? null
+, postgresSupport ? false, postgresql ? null
+}:
 
 with stdenv.lib;
 
···
 
   patches = [ ./bashcomp-dir.patch ];
 
-  buildInputs = [ python pkgconfig cmake bluez libusb1 curl gettext sqlite libiconv ];
+  buildInputs = [ python pkgconfig cmake bluez libusb1 curl gettext sqlite libiconv ]
+  ++ optionals dbiSupport [ libdbi libdbiDrivers ]
+  ++ optionals postgresSupport [ postgresql ];
 
   enableParallelBuilding = true;
 
   meta = {
     homepage = "http://wammu.eu/gammu/";
-    description = "Command line utility and library to control mobil phones";
+    description = "Command line utility and library to control mobile phones";
     license = licenses.gpl2;
     platforms = platforms.linux;
     maintainers = [ maintainers.coroa ];