A yank may not actually be warranted in this circumstance. The change works for most users of setuptools; it's only a very specific configuration of (build-environment, setuptools-version, third-party-dependency) that can cause an issue.
This is one of those situations where the scale of the software package is so large that even if only 0.1% of users had issue, that's a number representing tens of thousands of people.
It says 20C for me and I’m in the US/have everything set to US English. Is my browser telling it I prefer Celsius somehow (I do have the weather app on my phone set to Celsius) or did they change it to Celsius for everyone?
Looks great! What this now needs is a nice Web UI and also convince major players to adopt it. It would be in their interest to assure users that they can take their data with them (even though most people probably wouldn't).
Objective-C has objective because C itself is not objected oriented. Objective-Smalltalk would be redundant. How about StepTalk or SmallStep? to honor the NextStep heritage, you know.