update system

После многократных обновлений успешных два дня назад получил такое сообщение

* Вычисление зависимостей ...                                            [ ok ]
 * Package:    dev-lang/mono-4.4.1.0
 * Repository: gentoo
 * USE:        abi_x86_64 nls userland_GNU kernel_linux amd64 elibc_glibc
 * FEATURES:   preserve-libs sandbox usersandbox
 * Could not find a usable .config in the kernel source directory.
 * Please ensure that /usr/src/linux points to a configured set of Linux sources.
 * If you are using KBUILD_OUTPUT, please set the environment var so that
 * it points to the necessary object directory so that it might find .config.
 * ERROR: dev-lang/mono-4.4.1.0::gentoo failed (pretend phase):
 *   Kernel not configured; no .config found in /lib/modules/4.4.15-calculate/build
 * 
 * Call stack:
 *     ebuild.sh, line  133:  Called pkg_pretend
 *   environment, line 3442:  Called check_extra_config
 *   environment, line  688:  Called require_configured_kernel
 *   environment, line 3770:  Called die
 * The specific snippet of code:
 *           die "Kernel not configured; no .config found in ${KV_OUT_DIR}";
 * 
 * If you need support, post the output of `emerge --info '=dev-lang/mono-4.4.1.0::gentoo'`,
 * the complete build log and the output of `emerge -pqv '=dev-lang/mono-4.4.1.0::gentoo'`.
 * The complete build log is located at '/var/calculate/tmp/portage/dev-lang/mono-4.4.1.0/temp/build.log'.
 * The ebuild environment file is located at '/var/calculate/tmp/portage/dev-lang/mono-4.4.1.0/temp/environment'.
 * Working directory: '/usr/lib64/python3.4/site-packages'
 * S: '/var/calculate/tmp/portage/dev-lang/mono-4.4.1.0/work/mono-4.4.1.0'

 * Не удалось собрать dev-lang/mono-4.4.1.0::gentoo
 * Не удалось обновить

Что бы это значило?

вручную установи новое ядро emerge calculate-sources, перезагрузись и все норм
UPD при дальнейшем обновлении еще пару пакетов не ставятся чере гуй, тоже надо вручную эмержить