At line 62, the command "sed -i -e 's:gtk-update-icon-cache:true:' ./art/Makefile.in" produces a file not found result.
Created attachment 108305 [details] mail-notification-4.0.ebuild This ebuild corrects this bug.
Please, use unified diffs instead of attaching complete ebuilds... *** This bug has been marked as a duplicate of bug 164072 ***
Created attachment 108306 [details, diff] mail-notification-4.0.ebuild.patch Here's the patch.