I assume it only builds against fuse-2 right now so the dep string should limit it to SLOT=0, i.e. 'sys-fs/fuse:0='. See latest tracker bug comments for more info.
The bug has been closed via the following commit(s): https://gitweb.gentoo.org/repo/gentoo.git/commit/?id=c2c7e7257fae107de1f8401f18f2c563404b9bfc commit c2c7e7257fae107de1f8401f18f2c563404b9bfc Author: Mikle Kolyada <zlogene@gentoo.org> AuthorDate: 2019-01-18 13:14:11 +0000 Commit: Mikle Kolyada <zlogene@gentoo.org> CommitDate: 2019-01-18 13:14:11 +0000 sys-apps/s390-tools: EAPI bump, fix fuse slot Closes: https://bugs.gentoo.org/673676 Signed-off-by: Mikle Kolyada <zlogene@gentoo.org> Package-Manager: Portage-2.3.51, Repoman-2.3.11 sys-apps/s390-tools/s390-tools-2.4.0-r1.ebuild | 51 ++++++++++++++++++++++++++ 1 file changed, 51 insertions(+)