The current stable is kinda ancient. The new version has no bugs open, tests pass for me.
ia64 stable
ppc stable
Stable on alpha.
Stable on amd64
ppc64 stable
In some backend modes single test 'test_context_get_set_operator' failed: https://github.com/pygobject/pycairo/pull/80 It's a corner case and should not cause any real problems in actual package functionality.
x86 stable
sparc stable (thanks to Rolf Eike Beer)
arm stable
hppa, timeout, couldn't wait any longer.