When media-libs/lasi is installed, graphviz builds the lasi plugin, but graphviz-2.22.2.ebuild does not explicitly depend on it: 1. install media-libs/lasi 2. install graphviz 3. ldd /usr/lib/graphviz/libgvplugin_lasi.so | grep libLASi I briefly checked graphviz and there is a --with-lasi option, so the fix should be easy with the introduction of a lasi or unicode use flag. Older versions of graphviz might be affected as well, but I haven't checked.
thanks for the report, fixed in cvs.