app-dicts/wordnet-3.0 depends on dev-lang/tcl and dev-lang/tk which you don't seem to have available: major: No visible provider for DEPEND entry 'dev-lang/tcl' (unstable) (candidates: 8.5_alpha6: keyword repository_mask, 8.4.15: keyword, 8.4.14-r1: keyword, 8.4.14: keyword, 8.4.9: keyword) major: No visible provider for DEPEND entry 'dev-lang/tk' (unstable) (candidates: 8.5_alpha6: keyword repository_mask, 8.4.15: keyword, 8.4.14-r1: keyword, 8.4.14: keyword, 8.4.9: keyword) major: No visible provider for RDEPEND entry 'dev-lang/tcl' (unstable) (candidates: 8.5_alpha6: keyword repository_mask, 8.4.15: keyword, 8.4.14-r1: keyword, 8.4.14: keyword, 8.4.9: keyword) major: No visible provider for RDEPEND entry 'dev-lang/tk' (unstable) (candidates: 8.5_alpha6: keyword repository_mask, 8.4.15: keyword, 8.4.14-r1: keyword, 8.4.14: keyword, 8.4.9: keyword) Please let me know if that's going to change because the earlier versions have the same problem but I haven't dropped their keywords yet.
ppc-macos keyword moved to prefix. Thanks!