Excerpt from the ebuild: RDEPEND=" dev-libs/libpcre x11-libs/gtk+:2 spell? ( app-text/enchant[aspell] )" DEPEND="${RDEPEND} app-text/enchant[aspell] i.e. in RDEPEND the requirement is optional, via spell use-flag, but in DEPEND it is mandatory.
Just remove the surplus 'app-text/enchant[aspell]' from DEPEND and all goes well...
Sorry, my mystake I forgot to delete it from the DEPEND :] Well anyway it should be fixed now, thanks for the report.