https://gitlab.gnome.org/GNOME/pygobject/-/issues/652

--- pygobject-3.50.0/METADATA.in.orig
+++ pygobject-3.50.0/METADATA.in
@@ -19,3 +19,4 @@
 Classifier: Programming Language :: Python
 Classifier: Topic :: Software Development :: Libraries :: Python Modules
 Requires-Python: >=3.9, <4
+Requires-Dist: pycairo>=1.16