Hi,
čt 9. 7. 2020 v 15:27 odesílatel Matthias Klose <[email protected]> napsal:
> Describing here a solution which is implemented for Ubuntu focal (20.04
> LTS). A
> new source package what-is-python (-perl-dont-hurt-me) ships binary
> packages
> python-is-python2, python-dev-is-python2, python-is-python3 and
> python-dev-is-python3. The python-is-python2 package provides the python
> package, such that packages that still depend on python are not removed on
> a
> distro upgrade. On new installs, python-is-python3 is not installed by
> default,
> but the user gets a hint from command-not-found to install the package if
> he
> tries to run python. Package dependencies on the new four binary packages
> have
> to be disallowed in the Python policy. Note that such a package including
> the
> Provides should only be uploaded once all dependencies on the unversioned
> python
> packages are gone.
>
I like this solution in Ubuntu and I have:
onovy@jupiter:~$ dpkg -l | grep python-is-python3
ii python-is-python3 3.8.2-4
all symlinks /usr/bin/python to python3
What I think is good idea:
* keep "python" command pointing to python2.7 if I'm upgrading
buster->bullseye with python2.7 installed. We are going to keep python2.7
interpreter for bullseye, so don't break old "python" command for
third-parties apps/scripts/etc. (install python-is-python2 during
buster->bullseye upgrade)
* allow users to choose if they want python=python3 (apt install
python-is-python3)
* (maybe?) python=python3 in new installs, because why not? (install
python-is-python3 by default in clean install)
--
Best regards
Ondřej Nový
