2.42.4: please remove gi-docgen submodule
gi-docgen it is standalone projest. Only missing bit is lack of .pc file which I've reported in https://gitlab.gnome.org/ebassi/gi-docgen/-/issues/60.
Instead include that repo as submodule please help on push as well on provide .pc file to be able detect as same as with gtk-doc.
Includeing that sumodule is causeing that all gi-docgen files are installed now with gdk-pixbuf.