[LyX/master] Python runtime detection requirement upgraded to 3.8

[José Matos]

On Mon, 2024-06-10 at 16:47 +0200, Kornel Benko wrote:
> From now on I cannot build on ubuntu with linux 4.15.0-122.
> os_release VERSION="18.3 (Sylvia)"
> There is only python3 version 3.5
> 
> 	Kornel

I suppose that, from your description, you are running Mint 18.3.
Python3 there is Python 3.5.

Can't you install, in parallel, python 3.8?

$ sudo apt-get install python3.8

The system version will be the same so this is safe for your installed
system.
-- 
José Abílio