libgksu is dead, unmaintained and vulnerable for ages. Could you disable its optional support to finally allow us to kill it? Thanks a lot
commit 139be916908ca5c39cc235d71f1ef32e115bd9a2 Author: Michał Górny <mgorny@gentoo.org> AuthorDate: Tue Jun 6 11:20:44 2017 Commit: Michał Górny <mgorny@gentoo.org> CommitDate: Tue Jun 6 11:23:25 2017 xfce-extra/xfce4-taskmanager: Disable obsolete gksu support, #620974 Let's p.u.mask it on the older versions when it's ready to be treecleaned.