kicad: fix build

Fix configure time error:
  ...
  ImportError: No module named wx
  CMake Error at CMakeModules/FindwxPython.cmake:52 (message):
    wxPython/Phoenix does not appear to be installed on the system

Only build tested.

Fixes: f7e28bf ("Split buildPythonPackage into setup hooks")

pkgs/applications/science/electronics/kicad/default.nix

@@ -65,7 +65,7 @@ in stdenv.mkDerivation rec {
   buildInputs = [
     libGLU_combined zlib libX11 wxGTK pcre libXdmcp glew glm libpthreadstubs
     cairo curl openssl boost
-    swig python
+    swig (python.withPackages (ps: with ps; [ wxPython ]))
   ] ++ optional (oceSupport) opencascade
     ++ optional (ngspiceSupport) libngspice;