MacOS 12.3.1 (Monterey) lyx2lyx script fails to convert

[Stephan Witt]

Am 19.04.2022 um 00:30 schrieb Pavel Sanda via lyx-users <lyx-users at lists.lyx.org>:
> 
> On Sun, Apr 17, 2022 at 10:21:42AM +0200, Stephan Witt wrote:
>> Apple finally removed Python 2 in macOS 12.3 - sorry for LyX not being prepared. At the time LyX 2.3.6.2 was built it was announced already but not sure when it happens.
>> 
>> Now you have to install Python yourself. You may download it from python.org (https://www.python.org/downloads/macos/). Alternatively you may run python in a terminal window and choose to install it from Apple. I recommend the first option.
> 
> Not sure if I understand it correctly - any up to date mac system won't run lyx 2.3.6.2 (or rather its pythonic parts) anymore?
> If this is the case we should add some info directly to https://www.lyx.org/Download ?

Yes, that would be appropriate. 

At the time macOS 12 (Monterey) came out I verified the presence of python. It was there and had version 2.7.18. While the installation of macOS update to 12.3 the python installation will be removed.

Apple provides python3 but it is not preinstalled anymore. There is only a stub executable asking for download and installation of it:



On reconfigure LyX checks for a usable python and triggers the popup window with the opportunity to install python3. If the user responds with „Install“ and the download and install succeeds LyX has to be restarted and is usable after reconfigure.

I didn’t try yet how it goes if an existing LyX installation looses the python executable. I want to try that next. But all these experiments are time consuming as I have to do them in virtual machines.

Stephan
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