Bug#944885: Errors on initial use

[積丹尼 Dan Jacobson]

Package: grass
Version: 7.8.1-1
Severity: minor

$ grass

GRASS 7.8.1 (newLocation):~ > Traceback (most recent call last):
  File "/usr/lib/grass78/scripts/g.extension", line 141, in <module>
    from distutils.dir_util import copy_tree
ModuleNotFoundError: No module named 'distutils.dir_util'

(wxgui.py:3995): Gtk-CRITICAL **: 07:30:41.995: gtk_box_gadget_distribute: assertion 'size >= 0' failed in GtkScrollbar