2.4.0~RC1 hangs on macOS

[Stephan Witt]

Am 24.01.2024 um 09:02 schrieb José Matos <jaomatos at gmail.com>:
> 
> On Wed, 2024-01-24 at 00:48 -0700, list_email at icloud.com wrote:
>> Thanks, el.
>> 
>> Getting rid of macports for homebrew is not an option for me.
>> 
>> In my profile file, I have this:
>> 
>> alias python=/opt/local/bin/python3
>> 
>> which is macports. Does LyX see this? This alias points to Python
>> 3.9.18. There is a utility to switch to other versions.
>> 
>> I already have the command line tools installed, with Python 3.9.6 at
>> /usr/bin/phython3.
>> 
>> I just now tried switching to this line in my profile file:
>> 
>> alias python=/usr/bin/python3
>> 
>> with the same result.
>> 
>> Remember that LyX 2.3.7 works fine.
>> 
>> Jerry
> 
> LyX tells what is the version used in Help->About LyX.
> 
> Of course that the issue is that if it hangs before you can not see
> that.
> 
> Honestly I would be quite surprised if problems comes to be python
> since reconfigure runs.
> 
> The issue is why do you get the loop.
> 
> One idea here is to output the Python version to the reconfigure
> output.
> 
> That is quite easy, since we already inside Python.
> 
> The only thing that looks a bit strange is:
> """
> +checking for "lilypond"...  yes
> +  found LilyPond, but could not extract version number.
> checking for a LilyPond book (LaTeX) -> LaTeX converter...
> +checking for "lilypond-book"...  yes
>  File "/Applications/LyX.app/Contents/MacOS//lilypond-book", line 12
>    unset DISPLAY
>          ^
> SyntaxError: invalid syntax
> """
> 
> This is a shell script that only goes in Mac distribution and the
> reconfigure code seems to try to run it as Python?

Yes, the version check in configure.py is executed twice. 
The first attempt is the simple call, the 2nd is a python call.
The latter should be made on windows only as it is mentioned in the comment (~ line 1336).
I’ve made the change and put it in.

Stephan