Re: Python 3, was Re: ANN: Frescobaldi 2.19.0

[Andrew Bernard]

Hi David,

But lilypond ships its own internal version of python in …lilypond/usr/bin. Is 
this not to shield lilypond from system versions?

In my Ubuntu I have:

$ uname -a
Linux fivefold 4.2.0-35-generic #40-Ubuntu SMP Tue Mar 15 22:15:45 UTC 2016 
x86_64 x86_64 x86_64 GNU/Linux

$ /usr/bin/python --version
Python 2.7.10

and in the lilypond install:



$ ./python
Python 2.4.5 (#1, Apr  5 2015, 13:45:28) 
[GCC 4.9.2] on linux

Clearly a considerably, and not entirely compatible, earlier version - as I 
know, having written a whole lot of python scripts for lilypond in 2.7 before 
realising we are on 2.4.


I am aware the entire ecosystem has to be ported. I am offering to do the work. 
It does not bother me that you think it is ‘unsexy’.

But I don’t understand why the system vesion of python matters. Why do we 
bundle it then?

Also, python 2 and 3 stand happily side by side on my openSUSE systems, ny 
Ubuntu systems, my Fedora systems, and my Debian systems. I am having trouble 
seeing what the issue is. If there comes a dependcy on python 3, surely anybody 
who is capable of downloading and installing lilypond can also download and 
install python 3?

Andrew




On 23/04/2016, 8:57 PM, "David Kastrup" <address@hidden> wrote:

>address@hidden:/usr/local/tmp/lilypond$ uname -a
>Linux lola 4.4.0-21-generic #37-Ubuntu SMP Mon Apr 18 18:34:49 UTC 2016 i686 
>i686 i686 GNU/Linux
>address@hidden:/usr/local/tmp/lilypond$ python --version
>Python 2.7.11+
>address@hidden:/usr/local/tmp/lilypond$