If you happen to have glusterfs 6.0 then you won't be able to compile any xen-tools at the moment.
The bug has been closed via the following commit(s): https://gitweb.gentoo.org/repo/gentoo.git/commit/?id=88194809fe5a4bbda95418c09274d0644e01a602 commit 88194809fe5a4bbda95418c09274d0644e01a602 Author: Tomas Mozes <hydrapolic@gmail.com> AuthorDate: 2019-03-29 11:28:57 +0000 Commit: Yixun Lan <dlan@gentoo.org> CommitDate: 2019-04-03 04:55:29 +0000 app-emulation/xen-tools: disable sys-cluster/glusterfs automagic Closes: https://bugs.gentoo.org/682006 Package-Manager: Portage-2.3.62, Repoman-2.3.12 Signed-off-by: Tomáš Mózes <hydrapolic@gmail.com> Signed-off-by: Yixun Lan <dlan@gentoo.org> app-emulation/xen-tools/xen-tools-4.10.3-r2.ebuild | 4 ++++ app-emulation/xen-tools/xen-tools-4.11.1-r2.ebuild | 4 ++++ 2 files changed, 8 insertions(+)