The current stable slot 0.6 ebuild requires gtk-doc-am because of the eautomake call, if it isn't installed the build fails because automake can't find the macros it needs. The attached patch fixes this. Note that it only affect 0.6.4 as the others aren't calling automake, and it isn't a !doc only dep because the macros package isn't a runtime dep for gtk-doc so the dep may not be met even in the USE=doc case. Thanks, James Reproducible: Always
Created attachment 188175 [details, diff] goffice-gtk_doc_am-build-dep.patch
fixed without a bump. Thanks for reporting and the patch.