Running on a fairly up to date mostly Debian testing system on amd64 laptop: ~$ blink using set_wakeup_fd python: /tmp/buildd/sip4-4.12.1/siplib/siplib.c:10831: sipEnumType_alloc: Assertion `(((currentType)->td_flags & 0x0007) == 0x0003)' failed. Aborted