Fix #197

[nalepae]

Fix ZeroDivisionError on Windows using Progress bars.

This error may happen only on Windows because - maybe - Windows clock is not as precise as Mac/Linux clocks.
2 successive calls to time_ns may return the same result, causing the ZeroDivisionError.

[codecov]

Codecov Report

Merging #212 (5169554) into master (5169554) will not change coverage.
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[till-m]

LGTM!

[till-m]

are these comments no longer accurate or do we just not care about building time?

[nalepae]

Hum since there is inequality and not strict equality, I guess these comments are still valid.
Example:

# Pandas 1.1.5 has to be fully rebuilt with Python >= 3.10.5 (taking > 10 min)

Something which is valid for python >= 3.10.5 is also valid for python >= 3.10.8, mathematically speaking :)

[till-m]

Unless there's any objections, I will go ahead with merging this.

[nalepae]

Actually I would really like to test it on Windows, but I did not take the time to do it properly.
(Did not achieve to run a Windows VM on my M1 Mac book).

Well, I tested it on mac and it works.
In worst case, it still does not work on Windows. (no improvement, no degradation)
In best case, it works on Windows. (improvement)

==> We can merge!