From the bootstrap installer at the end of the graphviz bit
/usr/local/opt/gdk-pixbuf/bin/gdk-pixbuf-query-loaders
--update-cache
dyld: Library not loaded: /usr/local/opt/gettext/lib/libintl.8.dylib
Referenced from: /usr/local/opt/glib/lib/libglib-2.0.0.dylib
Reason: image not found
Warning: The post-install step did not complete successfully
You can try again using:
brew postinstall librsvg
From the bootstrap installer at the end of the
graphviz
bit