bug#73816: python-django's manage.py tries to use a hard-coded python executable

[Simon Tournier]

Hi,

On Tue, 15 Oct 2024 at 11:48, Gabriel Wicki <gabriel@erlikon.ch> wrote:

> The python-django package makes the admin utility create a manage.py
> file with a hard-coded python interpreter.
>
>   $ guix shell python python-django -- django-admin startproject foobar
>   $ head -n 1 foobar/manage.py
>   
> #!/gnu/store/my2j5bzapayk59971z2ryzlajdz569f9-python-toolchain-3.10.7/bin/python
>
> I think this is wrong.  The interpreter line should be
>
>   #!/usr/bin/env python3

Well, I don’t know if there is a rationale for this choice.  Somehow, my
understanding is: 1. python-django is byte-compiled using one specific
Python interpreter and 2. what is the guarantee that the whole code
byte-compiled with different Python interpreter will run?

Hence, that version of the specific Python interpreter is encoded.

Now, if the purpose of ’django-admin startproject foobar’ is to only
create generic configuration that does not depends on any Django or
Python version, then maybe it could be considered as wrong. :-)

Else I don’t know.  I remember having a similar discussion about a
similar Python tool but I am not able to find it back.

Cheers,
simon