Nepomuk also didn't build for me, while I was emerging kde-meta-4.3.3 (no overlay). I'll still check if I can solve it by myself.
Has anyone successfully built kde-4.3.73 from kde-testing overlays with USE=semantic-desktop? If so, how did you manage?
I get about 8 build failures with the flag set, due to this failure in nepomuk:
$ grep -i error kde-base\:nepomuk-4.3.73\:20091105-205415.log
/var/tmp/portage/kde-base/nepomuk-4.3.73/work/nepomuk-4.3.73/nepomuk/services/queryservice/queryservice.cpp:52: error: 'class Soprano::NRLModel' has no member named 'setEnableQueryPrefixExpansion'
make[2]: *** [nepomuk/services/queryservice/CMakeFiles/nepomukqueryservice.dir/queryservice.o] Erro 1
make[1]: *** [nepomuk/services/queryservice/CMakeFiles/nepomukqueryservice.dir/all] Error 2
make: *** [all] Error 2
* ERROR: kde-base/nepomuk-4.3.73 failed:
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Alan McKinnon
alan dot mckinnon at gmail dot com