The libvirt-6.10.0 and possibly older ebuilds are passing build options to meson that do not exist (anymore): WARNING: Unknown options: "dbus, hal, macvtap, virtualport" Some of these are also exposed as IUSE, so it means the USE is ineffective and potentially disabling it would mean build failures if the option was made unconditionally enabled by upstream.
The bug has been closed via the following commit(s): https://gitweb.gentoo.org/repo/gentoo.git/commit/?id=65296998c4e7147814af2210cee47d5c42a479c3 commit 65296998c4e7147814af2210cee47d5c42a479c3 Author: Matthias Maier <tamiko@gentoo.org> AuthorDate: 2020-12-05 17:21:05 +0000 Commit: Matthias Maier <tamiko@gentoo.org> CommitDate: 2020-12-05 17:21:35 +0000 app-emulation/libvirt: ebuild maintenance - remove unsupported meson configure options - remove obsolete sed Closes: https://bugs.gentoo.org/758650 Closes: https://bugs.gentoo.org/758653 Package-Manager: Portage-3.0.11, Repoman-3.0.2 Signed-off-by: Matthias Maier <tamiko@gentoo.org> app-emulation/libvirt/Manifest | 2 +- ...virt-6.10.0.ebuild => libvirt-6.10.0-r1.ebuild} | 24 ++++------------------ 2 files changed, 5 insertions(+), 21 deletions(-)