verbose not picked-up from configuration file?

I'm trying to get the ball rolling (dump config, use it to run program). It all works wonders, except for the verbose option. It is not correctly picked-up from the configuration file.

If I pass -vv to the program, then it starts spitting out log messages, but verbose=2 on my configuration file does not.

@theophile.gentilhomme: could you please check if you test for this?

For reference, my implementation is here:

https://gitlab.idiap.ch/bob/bob.ip.hed/blob/master/bob/ip/hed/script/hed.py

The configuration file I use is here:

https://gitlab.idiap.ch/bob/bob.ip.hed/blob/master/bob/ip/hed/configurations/bsds500.py