Well known bug now. http://rt.cpan.org/Public/Bug/Display.html?id=47946
Created attachment 200777 [details] Test-Deep-0.105_rc2.ebuild Slightly modified copy of 0.104 that WorksForMe. ( For others trying to test 5.10.1 )
Please provide the output of 'emerge --info' by pasting it into a bugzilla comment as well to assist the maintainers
0.106 is in the tree Thanks