[opensuse-packaging] Python 2/3 and update-alternatives
Hi, I'm wondering, why the python packages for version 2 and 3 don't use the update-alternatives script. Any reason for this? I haven't found anything in the package itself nor on mailing lists. Probably I've missed some. Maybe this was on purpose as Python2 isn't a complete replacement for Python3 (and vice versa). On the other side, I assume, not all Java runtime environments are always compatible. However, still, you can use this: # update-alternatives --display java java - auto mode link best version is /usr/lib64/jvm/jre-1.8.0-openjdk/bin/java link currently points to /usr/lib64/jvm/jre-1.8.0-openjdk/bin/java link java is /usr/bin/java [...] # update-alternatives --display python update-alternatives: error: no alternatives for python (executed on openSUSE Tumbleweed) Bug? Feature? Design decision? Hope someone can enlighten me. :)) Thanks! -- Gruß/Regards, Thomas Schraitle ---------------------------------------------------------------------- SUSE LINUX Products GmbH (o< Maxfeldstrasse 5 /\\ Documentation Specialist 90409 Nuernberg, Germany _\_v http://www.suse.com | HRB 21284 SUSE LINUX GmbH, GF: Felix Imendörffer, Jane Smithard, Dilip Upmanyu, Graham Norton, HRB 21284 (AG Nürnberg) -- To unsubscribe, e-mail: opensuse-packaging+unsubscribe@opensuse.org To contact the owner, e-mail: opensuse-packaging+owner@opensuse.org
On 5 November 2017 at 22:54, Thomas Schraitle <toms@suse.de> wrote:
Hi,
I'm wondering, why the python packages for version 2 and 3 don't use the update-alternatives script.
Any reason for this?
I believe there are a number of packages that just reference "/usr/bin/python", which such a change would break. There's a long discussion about changing default Python version to Python 3 here: https://lists.opensuse.org/opensuse-factory/2017-06/msg00743.html
[snip]
Bug? Feature? Design decision? Hope someone can enlighten me. :))
Thanks!
-- - Karl Cheng (Qantas94Heavy) -- To unsubscribe, e-mail: opensuse-packaging+unsubscribe@opensuse.org To contact the owner, e-mail: opensuse-packaging+owner@opensuse.org
Am 05.11.2017 um 12:54 schrieb Thomas Schraitle:
Hi,
I'm wondering, why the python packages for version 2 and 3 don't use the update-alternatives script.
Any reason for this?
I haven't found anything in the package itself nor on mailing lists. Probably I've missed some. You just looked at the wrong lists then - the discussion was heated :)
Maybe this was on purpose as Python2 isn't a complete replacement for Python3 (and vice versa). On the other side, I assume, not all Java runtime environments are always compatible. However, still, you can use this:
The java runtimes are supposed to be compatible. They might error out if the target version of the jar is unsupported, but the (discussed) problem with python 2 and 3 is that they might interpret the same syntax differently - and not error out, but create hidden bugs. Greetings, Stephan -- Ma muaß weiterkämpfen, kämpfen bis zum Umfalln, a wenn die ganze Welt an Arsch offen hat, oder grad deswegn. -- To unsubscribe, e-mail: opensuse-packaging+unsubscribe@opensuse.org To contact the owner, e-mail: opensuse-packaging+owner@opensuse.org
Hi,
[...] # update-alternatives --display python update-alternatives: error: no alternatives for python
(executed on openSUSE Tumbleweed)
Bug? Feature? Design decision? Hope someone can enlighten me. :))
Thanks Stephan and Karl for the pointers! Indeed, I looked at the wrong list. :)) -- Gruß/Regards, Thomas Schraitle ---------------------------------------------------------------------- SUSE LINUX GmbH (o< Maxfeldstrasse 5 /\\ Documentation Specialist 90409 Nuernberg, Germany _\_v http://www.suse.com http://lizards.opensuse.org/author/thomas-schraitle/ GF: Felix Imendörffer, Jane Smithard, Dilip Upmanyu, Graham Norton, HRB 21284 (AG Nürnberg) -- To unsubscribe, e-mail: opensuse-packaging+unsubscribe@opensuse.org To contact the owner, e-mail: opensuse-packaging+owner@opensuse.org
Thomas Schraitle <toms@suse.de> writes:
Hi,
[...] # update-alternatives --display python update-alternatives: error: no alternatives for python
(executed on openSUSE Tumbleweed)
Bug? Feature? Design decision? Hope someone can enlighten me. :))
Thanks Stephan and Karl for the pointers!
Indeed, I looked at the wrong list. :))
There is also an upstream discussion around this which might be interesting: https://www.python.org/dev/peps/pep-0394/ Cheers, Kristoffer
-- Gruß/Regards, Thomas Schraitle
---------------------------------------------------------------------- SUSE LINUX GmbH (o< Maxfeldstrasse 5 /\\ Documentation Specialist 90409 Nuernberg, Germany _\_v http://www.suse.com http://lizards.opensuse.org/author/thomas-schraitle/ GF: Felix Imendörffer, Jane Smithard, Dilip Upmanyu, Graham Norton, HRB 21284 (AG Nürnberg) -- To unsubscribe, e-mail: opensuse-packaging+unsubscribe@opensuse.org To contact the owner, e-mail: opensuse-packaging+owner@opensuse.org
-- // Kristoffer Grönlund // kgronlund@suse.com -- To unsubscribe, e-mail: opensuse-packaging+unsubscribe@opensuse.org To contact the owner, e-mail: opensuse-packaging+owner@opensuse.org
participants (4)
-
Karl Cheng -
Kristoffer Grönlund -
Stephan Kulow -
Thomas Schraitle