bytecode non-backcompatibility

[Terry Reedy]

"Maurice LING" <mauriceling at acm.org> wrote in message 
news:d4nrhu$rl3$1 at domitilla.aioe.org...
> So my alternative solution is that PyPI have a mechanism to maintain what 
> had been installed in the site-package directory and to download the 
> libraries and install into the new site-package directory...

> What do you think?

I doubt anyone disputes that upgrades are more hassle than we would like. 
My main point was that freezing CPython's technology is not the solution. 
Any other upgrade helper that you can contribute will be welcome.

Terry J. Reedy