Apparently the "INV_ARCHIVE" define went away somewhere between 6.3.2 and 6.4,
but this was not reflected in the Python interface.
I had to do this:
#ifdef PRE_PG_6_4 PyDict_SetItemString(dict, "INV_ARCHIVE", PyInt_FromLong(INV_ARCHIVE)); #endif
in order to get the Python interface to compile.
-Michael Robinson