Because of -Wextra. Either, that should be removed or eselect-python should depend on a the first gcc version, which supports -Wextra. Severity: enhancement, because it only hit's people with a system, which is out of date a little bit, and because it's easily fixable by emerging a new version of gcc (sys-devel/gcc-3.4.6-r2 worked for me, sys-devel/gcc-3.3.5-r1 did not).
(In reply to comment #0) > Severity: enhancement, because it only hit's people with a system, which is > out of date a little bit, [...] It's still a bug and not an enhancement. Changing severity to "minor".
Fixed in app-admin/eselect-python-20091230.