[issue32730] Allow py launcher to launch other registered Pythons

[Tzu-ping Chung]

Change by Tzu-ping Chung :


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nosy: +uranusjr

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[issue32730] Allow py launcher to launch other registered Pythons

[Steve Dower]

Steve Dower  added the comment:

Since I took the time to do a brain dump of my thinking here, feel free to 
review/contribute to https://github.com/zooba/PyLauncher/wiki

Note that the code in that repo doesn't match the wiki page, and while I think 
it's good code I do now think it's the wrong approach. So ignore that and just 
read the "spec"

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[issue32730] Allow py launcher to launch other registered Pythons

[Terry J. Reedy]

Change by Terry J. Reedy :


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versions:  -Python 3.4, Python 3.5

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[issue32730] Allow py launcher to launch other registered Pythons

[Steve Dower]

Steve Dower  added the comment:

Yep, this was part of the plan. Just hasn't happened yet (it probably requires 
a significant rewrite of the launcher which nobody has volunteered to do or 
found the time for).

I thought I had another open bug on this too... if someone finds it, feel free 
to dup this one.

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[issue32730] Allow py launcher to launch other registered Pythons

[Peter Suter]

New submission from Peter Suter :

For example Anaconda Python is registered under 
HKEY_LOCAL_MACHINE\Software\Python\ContinuumAnalytics\Anaconda36-64\ as 
described in PEP 514 "Python registration in the Windows registry" .

The py launcher from PEP 397 however ignores that and only considers 
HKEY_LOCAL_MACHINE\Software\Python\PythonCore\ registrations.

There seems to be no mechanism to register Anaconda Python with the py 
launcher. Anaconda considers this a bug in the Python launcher. 
https://github.com/ContinuumIO/anaconda-issues/issues/149#issuecomment-361922640

Shouldn't this be possible? Maybe via py.ini [defaults]?

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components: Windows
messages: 311338
nosy: paul.moore, petsu...@gmail.com, steve.dower, tim.golden, zach.ware
priority: normal
severity: normal
status: open
title: Allow py launcher to launch other registered Pythons
type: enhancement
versions: Python 2.7, Python 3.4, Python 3.5, Python 3.6, Python 3.7, Python 3.8

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