gh-137964: Remove the "experimental" designation from the Windows installer

[itamaro]

• Issue: Remove "(experimental)" from 3.14+ Windows installer #137964

[auvipy]

make sense

[zooba]

We should still discourage this option, as it creates the mixed install directory that was the source of a range of issues for free-threaded users. But there's no risk in changing this string (and the entire installer shows that it's "deprecated").

Are there any references under PC\layout (probably support\pymanager.py in that directory)?

[zooba]

Just looked and confirmed there isn't, so this is okay to merge. @itamaro, will you coordinate the backport for 3.14?

[miss-islington-app]

Thanks @itamaro for the PR, and @zooba for merging it 🌮🎉.. I'm working now to backport this PR to: 3.14.
🐍🍒⛏🤖

[bedevere-app]

GH-137971 is a backport of this pull request to the 3.14 branch.

[itamaro]

thanks @zooba !

We should still discourage this option, as it creates the mixed install directory that was the source of a range of issues for free-threaded users

do we have a better solution for free-threaded users? is it any different when using pymanager? (is there another issue where this is being discussed?)

will you coordinate the backport for 3.14?

sure, thanks for merging!

[zooba]

do we have a better solution for free-threaded users? is it any different when using pymanager?

Yeah, the install manager will install a complete runtime (under a different prefix). I don't remember right now if it provides a python.exe or only a python3.Xt.exe (as decreed by the SC), but it definitely doesn't have a modified pyconfig.h (which was the cause of most of the issues).

So it's a bit better in terms of global package installation.

is there another issue where this is being discussed?

Not that I'm aware of, it came up on a few other issues when free-htreading stuff broke regular users. Anything specific to the install manager can be discussed on the pymanager repo.