This recent commit: http://sources.gentoo.org/cgi-bin/viewvc.cgi/gentoo-x86/app-mobilephone/obexftp/obexftp-0.23-r1.ebuild?r1=1.13&r2=1.14 introduces transition to distutils-r1. My understanding of Python eclasses is limited, but distutils-r1 is apparently used for unconditional Python dependencies. s/distutils/python-single/ in the ebuild + "python? ( ${PYTHON_DEPS} )" in RDEPEND seems to fix the issue.
I used distutils-r1 because the old one used distutils. Will investigate further.
See also: http://wiki.gentoo.org/wiki/Python/distutils-r1#DISTUTILS_OPTIONAL
[QA] The mobile-phone herd has been dissolved to maintainer-needed due to absence. This package has no maintainer so this bug may go unnoticed for a long time. Gentoo has a dedicated team[1] for assisting users in maintaining orphaned packages. If you are interested in maintaining this package, please contact proxy-maint@gentoo.org. [1]: https://wiki.gentoo.org/index.php?title=Project:Proxy_Maintainers
Should be fixed in -0.24. But see bug #522750 comment #4.