I've tried to update my systemd live ebuild and got the following message: # emerge -1 ">=systemd-9999" --backtrack=1000 These are the packages that would be merged, in reverse order: Calculating dependencies... done! [ebuild R *] sys-apps/systemd-9999:0/2::gentoo USE="acl audit cryptsetup curl elfutils gcrypt gnuefi http idn importd kmod lz4 lzma nat pam (policykit) qrcode seccomp ssl xkb -apparmor (-kdbus) -python (-selinux) -sysv-utils -terminal {-test} -vanilla (-doc%) (-gudev%*) (-introspection%*)" ABI_X86="32 (64) (-x32)" PYTHON_SINGLE_TARGET="python2_7 -python3_3 -python3_4" PYTHON_TARGETS="python2_7 python3_3 -python3_4" 0 KiB Total: 1 package (1 reinstall), Size of downloads: 0 KiB !!! Multiple package instances within a single package slot have been pulled !!! into the dependency graph, resulting in a slot conflict: sys-apps/systemd:0 (sys-apps/systemd-9999:0/2::gentoo, ebuild scheduled for merge) pulled in by >=sys-apps/systemd-9999 (Argument) (sys-apps/systemd-9999:0/2::gentoo, installed) pulled in by >=sys-apps/systemd-212-r5:0/2[abi_x86_32(-)?,abi_x86_64(-)?,abi_x86_x32(-)?,abi_mips_n32(-)?,abi_mips_n64(-)?,abi_mips_o32(-)?,abi_ppc_32(-)?,abi_ppc_64(-)?,abi_s390_32(-)?,abi_s390_64(-)?,gudev(-),introspection(-)?] required by (virtual/libgudev-215-r3:0/0::gentoo, installed) It may be possible to solve this problem by using package.mask to prevent one of those packages from being selected. However, it is also possible that conflicting dependencies exist such that they are impossible to satisfy simultaneously. If such a conflict exists in the dependencies of two different packages, then those packages can not be installed simultaneously. For more information, see MASKED PACKAGES section in the emerge man page or refer to the Gentoo Handbook. afaik is the slot the part after the single colon here "0/2" so where are the different slots? Reproducible: Always Steps to Reproduce: 1. Try to update systemd live ebuild
It's probably the libgudev problem. *** This bug has been marked as a duplicate of bug 552036 ***
