most of the packages I've seen lack the python3_other bits (no statistics, just my impression).
That's my impression too.
Is this something we want? If so, are the packagers willing to adapt their packages (as much as I'd like to do this, I lack the resources to hack on 228 packages)?
I've done quite a few but it's in the tens, not the hundreds. However, winter is coming and it's a nice activity when you're down with the flu.
I've noticed that the with_python3_other variable isn't defined in the file shipped by python3-rpm-macros, it would help transition to set that variable as in the original plan. The edits I've done use that variable as a conditional. Or shouldn't they?
I'm interesting in having more python3.6 packages in EPEL7 since newer releases of Mailman3 requires Python >= 3.5, so I'm currently stuck by some missing dependencies. So I'm willing to help move this forward.
Aurélien