Depending on python directly is disallowed, plus you do not enforce proper targets on python dependencies. Please port this package to python-single-r1.
Should be fixed now. Thanks
One more thing: I think pygobject:* is almost certainly wrong. Slots :2 and :3 have completely different API, and it is highly unlikely you can accept either.
I removed support to pygobject for now. It was not really in. I will do after adding gtkada to the tree and support for it in gnatcoll