Basically I made a pull request to update Leptonica to the latest version. However Leptonica can be built with or without various libraries, i.e. if the GIF library is not found then GIF images will not be supported.
The previous version did not have GIF support compiled in, I think my version does and would really like to verify that. My guess would be that I need to somehow point Julia at “my” Yggdrasil fork, is that possible?