Seems that the package glib2-2.80.4-bootstrap.tgz is missing in both
7.6/amd64 and -current.

Indirectly Gimp depends on it.


glib2-2.80.4-bootstrap.tgz
 |
 +-> gobject-introspection-1.80.1p1.tgz
      |
      +-> p5-Glib-Object-Introspection-0.051.tgz
      |
      +-> py3-gobject3-3.48.2p0.tgz
      |
      +-> libmypaint-1.6.1p1.tgz
           |
           +-> gimp-2.10.38.tgz


Thanks and best regards.