'MAKEOPTS=-j1 emerge -v1 doxygen' fails with: ... root@caiman:/root(87)# MAKEOPTS=-j1 emerge -v1 doxygen * IMPORTANT: 1 news items need reading for repository 'gentoo'. * Use eselect news read to view new items. These are the packages that would be merged, in order: Calculating dependencies... done! [ebuild UD ] dev-libs/xapian-1.2.22:0/1.2.22::gentoo [1.3.4:0/1.3.4::gentoo] USE="brass chert doc inmemory -static-libs" CPU_FLAGS_X86="sse sse2" 0 KiB [ebuild R ] app-doc/doxygen-1.8.10-r1::gentoo USE="doc dot doxysearch latex qt4 -clang -debug (-sqlite)" LINGUAS="de fr ru -af -ar -ca -cs -da -el -eo -es -fa -fi -hr -hu -hy -id -it -ja -ko -lt -mk -nb -nl -pl -pt -pt_BR -ro -sk -sl -sr -sv -tr -uk -vi -zh" 0 KiB Total: 2 packages (1 downgrade, 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: dev-libs/xapian:0 (dev-libs/xapian-1.2.22:0/1.2.22::gentoo, ebuild scheduled for merge) pulled in by =dev-libs/xapian-1.2* required by (app-doc/doxygen-1.8.10-r1:0/0::gentoo, ebuild scheduled for merge) ^ ^^^^ (dev-libs/xapian-1.3.4:0/1.3.4::gentoo, installed) pulled in by dev-libs/xapian:0/1.3.4=[inmemory] required by (gnome-extra/zeitgeist-0.9.16:0/0::gentoo, installed) ^^^^^^^^^
The dependencies dev-libs/xapian:0=[inmemory] (by zeitgeist) and =dev-libs/xapian-1.2* by doxygen are not exclusive. If at all, then this is a resolver issue. I will have a look at doxygen's dependency on xapian. Maybe we can support 1.3* now.