[GRASS-user] Errors building 7.9.dev

[Rich Shepard]

For some reason today's build attempt failed. The first file with errors is
d.correlate:
traceback (most recent call last):
   File "/home/rshepard/gis/grass/grass_dev/dist.x86_64-pc-linux-gnu/scripts/d.correlate", line 31, in <module>
     from grass.script.utils import try_remove
   File "/home/rshepard/gis/grass/grass_dev/dist.x86_64-pc-linux-gnu/etc/python/grass/__init__.py", line 4, in <module>
     import six
ModuleNotFoundError: No module named 'six'
../../include/Make/Html.make:14: recipe for target 'd.correlate.tmp.html' failed
make: *** [d.correlate.tmp.html] Error 1

However:
$ ls /var/log/packages/ | grep six
python3-six-1.13.0-x86_64-1_SBo
six-1.14.0-x86_64-1_SBo

I'm running Python-3.9.1 and wxPython4-4.1.0-x86_64-1_SBo. I don't see why
__init.py__ is not finding either the python2 six or (preferably) the
python3-six.

Suggestions on how to locate the reason appreciated.

Carpe weekend and stay well,

Rich