Either dev-tex/rubber-1.6.0-r1 should support python_targets_python3_12 or a newer version should be marked stable. Reproducible: Always Actual Results: # emerge -avuDN --keep-going @world * IMPORTANT: 2 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 \ !!! Problem resolving dependencies for dev-tex/rubber from @selected ... done! Dependency resolution took 5.67 s (backtrack: 0/20). !!! The ebuild selected to satisfy "dev-tex/rubber" has unmet requirements. - dev-tex/rubber-1.6.0-r1::gentoo USE="-test" ABI_X86="(64)" PYTHON_TARGETS="-python3_10 -python3_11" The following REQUIRED_USE flag constraints are unsatisfied: any-of ( python_targets_python3_10 python_targets_python3_11 ) (dependency required by "@selected" [set]) (dependency required by "@world" [argument])