Windows Installer can't select TargetDir in UI?

[ddba246b-244c-48a6-ae46-7176d08b52bb]

BPO	39263
Nosy	@pfmoore, @tjguk, @zware, @zooba

^{Note: these values reflect the state of the issue at the time it was migrated and might not reflect the current state.}

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GitHub fields: ```python assignee = None closed_at = None created_at = labels = ['3.8', 'expert-installation', 'OS-windows'] title = "Windows Installer can't select TargetDir in UI?" updated_at = user = 'https://bugs.python.org/JamesonNash' ``` bugs.python.org fields: ```python activity = actor = 'Jameson Nash' assignee = 'none' closed = False closed_date = None closer = None components = ['Installation', 'Windows'] creation = creator = 'Jameson Nash' dependencies = [] files = [] hgrepos = [] issue_num = 39263 keywords = [] message_count = 4.0 messages = ['359627', '359628', '359629', '359631'] nosy_count = 5.0 nosy_names = ['paul.moore', 'tim.golden', 'zach.ware', 'steve.dower', 'Jameson Nash'] pr_nums = [] priority = 'normal' resolution = None stage = None status = 'open' superseder = None type = None url = 'https://bugs.python.org/issue39263' versions = ['Python 3.8'] ```

[ddba246b-244c-48a6-ae46-7176d08b52bb]

When running the installer on Windows, I wanted to put Python in an easily accessible path (C:\Python38 in my case), however, the GUI didn't seem to provide any way to change the path (from AppData). And additionally, the "install for all users" checkbox seemed to be broken (didn't respond to mouse events and remained checked). Running the installer with the argument TargetDir=C:\Python38 worked, but I wouldn't have expected to need to hack my way to just picking the install directory.

[zooba]

You could have chosen the "Customize installation" button (see the screenshot at https://docs.python.org/3.8/using/windows.html#installation-steps). The description says "Choose location and features".

[zooba]

You may have already had a previous install that was being upgraded. In that case, you should uninstall the old one and then install it to a new location (or else you may end up with some subtle corruption).

[ddba246b-244c-48a6-ae46-7176d08b52bb]

Yes, I thought it was confusing that button is labeled "choose location and features", but it only let me change a few features and not location.