AFAICT releasing now needs you to have both a

python3.9

(for generating the changelog) and a `python3.7`(for

./build-support/bin/release.sh

) Could we maybe reduce that to just one?

huh, you shouldn't need python3.9 for the changelog? What's going on there?

I originally was running with a (perfectly functioning, not-bundled-in-OSX) 3.8 and it complained that it didn't satisfy constraints

==3.9

hmm, there are no

interpreter_constraints

in

build-support/bin/BUILD

- it should be using

[python-setup].interpreter_constraints

Could not reproduce, so assuming it was a remnant of me fighting with interpreter selection at some point 🙂