Damit pip das Paket pygobject installieren kann, müssen auf dem Debian-System folgende Pakete installiert sein:

# apt-get install libglib2.0-dev libgirepository1.0-dev

Sonst liest man folgende Fehlermeldungen:

...
running build_ext
Package glib-2.0 was not found in the pkg-config search path.
Perhaps you should add the directory containing `glib-2.0.pc'
to the PKG_CONFIG_PATH environment variable
No package 'glib-2.0' found
Command '('pkg-config', '--print-errors', '--exists', 'glib-2.0 >= 2.38.0')' returned non-zero exit status 1

Try installing it with: 'sudo apt install libglib2.0-dev'

----------------------------------------
Failed building wheel for pygobject
Running setup.py clean for pygobject