how to enforce one version of python

[Lorenzo Salvadore]

> Maybe I need to stop using portupgrade. What is the best replacement?

I never liked traditional updaters: to me, they seem too complex for a task that
should be rather simple. Thus I wrote one myself: Caronte.
It has not yet been committed to the port tree, but you can find the port
here, waiting for a commit:

https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=230769

Keep in mind that the project is new and I have not tested it in many
situation yet. In particular, I found that I need to work a bit in the
case new options are added to a port after an update (at the moment,
in this case, the upgrade is suspended in the configuration step of the
updated port until you press CTRL + C), but I will fix that as soon as
possible (it was not a priority until I was the only user).

I think my updater has a nice behavior with flavors (read manpage),
but if it has not, you can post an issue on github and I will deal with it
as a priority:

https://github.com/lsalvadore/caronte

Lorenzo Salvadore.