Bug report

Bug description:

I used the installer to upgrade from a Python 3.13.0rc1 install to a Python 3.13.0rc2 install. In the 3.13.0rc1 install, I had installed the free-threaded binaries.

When upgrading, I chose the first option, "Upgrade Now".

After the upgrade, the free-threaded binaries were no longer installed, and I had to rerun the installer and modify the install to add them.

Other non-default install options, such as installing the debug binaries, were not lost.

CPython versions tested on:

3.13

Operating systems tested on:

Windows

Linked PRs

• gh-124254: Detect freethreaded MSI component when doing an upgrade on Windows #124279
• [3.13] gh-124254: Detect freethreaded MSI component when doing an upgrade on Windows (GH-124279) #124347