any version of app-emulation/lxc in the tree lacks $(use_enable seccomp) in src_configure() phase to correctly disable the binding and use of sys-libs/libseccomp if installed. the configure script detects an installed sys-libs/libseccomp and enables it nevertheless: .. --enable-seccomp enable seccomp support [default=auto] .. to fully disable the use of seccomp via USE=-seccomp it has to explicitly disabled. Reproducible: Always Steps to Reproduce: 1. emerge -1v sys-libs/libseccomp 2. USE="-seccomp" emerge -1v app-emulation/lxc 3. emerge --depclean -v sys-libs/libseccomp 4. -> lxc will directly show up in @preserved-rebuild ..
Oops yes. sorry about that. Fixed without revbump. I plan to commit 1.1.0 in the next few days anyway.