dev-python/pyudev has a qt4 USE flag to enable Qt4 support - since Qt4 is dead, please remove the qt4 USE flag and only provide the qt5 option.
The bug has been referenced in the following commit(s): https://gitweb.gentoo.org/repo/gentoo.git/commit/?id=bf3d4dc504f92ab99cb37842149e46d5ab343d68 commit bf3d4dc504f92ab99cb37842149e46d5ab343d68 Author: Andreas Sturmlechner <asturm@gentoo.org> AuthorDate: 2017-11-27 19:21:41 +0000 Commit: Andreas Sturmlechner <asturm@gentoo.org> CommitDate: 2017-11-27 19:26:41 +0000 dev-python/pyudev: Drop USE=qt4 Bug: https://bugs.gentoo.org/634962 Package-Manager: Portage-2.3.16, Repoman-2.3.6 dev-python/pyudev/pyudev-0.21.0.ebuild | 3 +-- 1 file changed, 1 insertion(+), 2 deletions(-)}
Cleaned up Qt4 support ahead of 0.21.0 stabilisation...