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Re: Best practise for managing Conda environments?

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Den 2026-09-21 skrev Martin Schöön <martin.schoon@gmail.com>:
<snip>
> Yesterday, however, I encountered a problem that a quick internet
> search told me is somewhat common: adding a package to an environment
> stalls at the 'solving environment' stage. I found a bunch of rather
> different 'fixes'. I have not tried any yet. I think maybe I am doing
> environments wrong.
>
> Among the 'fixes' suggested are:
>
> * Use mamba for installing packages.
> * conda config --set channel_priority strict
> * Remove and re-create environments to ensure packages are up-to-date.
>
<snip>
> My thinking now:
>
> I should have more rather than fewer environments and make them more
> task specific -- avoid 'general purpose' environments to limit the
> number of packages in each environment.

OK guys and gals, I have done some research and think I have answers.
Yes, I have indeed done environments wrong!

The following three are the most concise ones when it comes to advice:
https://nsc.gitlab-pages.liu.se/berzelius-training/managing-conda-environments-best-practices/1.%20concepts/
https://nsc.gitlab-pages.liu.se/berzelius-training/managing-conda-environments-best-practices/2.%20best-practices/
https://msi.umn.edu/getting-started/help/knowledge-base/best-practices-conda

These are also good:
https://techietory.com/managing-python-environments-with-conda/
https://www.whiteboxml.com/blog/the-definitive-guide-to-python-virtual-environments-with-conda
https://thejacksonlaboratory.github.io/bestpractices_workshop/conda.html

TLDR:
* Create task specific environments.
* Use mamba.
* Try, as far as possible, to instal all needed packages in one go.
* Don't mend/tinker with environments. Create new ones instead.
* Document your environments. README.md or something...

I also asked Duck.ai (front end for Mistral Small 4 in my case) for
advise. The results looks like a summary of the information I
linked to. I will post it separately after having read through
and figured out how to format it for usenet news.

/Martin

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Best practise for managing Conda environments? Martin Schöön <martin.schoon@gmail.com> - 2026-09-21 09:17 +0000
  Re: Best practise for managing Conda environments? Johann 'Myrkraverk' Oskarsson <johann@myrkraverk.invalid> - 2026-09-21 17:32 +0800
    Re: Best practise for managing Conda environments? Martin Schöön <martin.schoon@gmail.com> - 2026-09-21 20:33 +0000
      Re: Best practise for managing Conda environments? Jon Ribbens <jon+usenet@unequivocal.eu> - 2026-09-21 22:05 +0000
        Re: Best practise for managing Conda environments? Johann 'Myrkraverk' Oskarsson <johann@myrkraverk.invalid> - 2026-09-22 14:37 +0800
          Re: Best practise for managing Conda environments? ram@zedat.fu-berlin.de (Stefan Ram) - 2026-09-22 07:33 +0000
          Re: Best practise for managing Conda environments? Jon Ribbens <jon+usenet@unequivocal.eu> - 2026-09-22 09:08 +0000
            Re: Best practise for managing Conda environments? Johann 'Myrkraverk' Oskarsson <johann@myrkraverk.invalid> - 2026-09-22 22:53 +0800
  Re: Best practise for managing Conda environments? Johann 'Myrkraverk' Oskarsson <johann@myrkraverk.invalid> - 2026-09-22 15:08 +0800
  Re: Best practise for managing Conda environments? Lawrence D’Oliveiro <ldo@nz.invalid> - 2026-09-22 07:44 +0000
    Re: Best practise for managing Conda environments? "Loris Bennett" <loris.bennett@fu-berlin.de> - 2026-09-22 10:14 +0200
  Re: Best practise for managing Conda environments? Martin Schöön <martin.schoon@gmail.com> - 2026-09-22 19:53 +0000
    Re: Best practise for managing Conda environments? Johann 'Myrkraverk' Oskarsson <johann@myrkraverk.invalid> - 2026-09-23 04:57 +0800
      Formatting (was: Best practise for managing Conda environments?) ram@zedat.fu-berlin.de (Stefan Ram) - 2026-09-23 08:17 +0000
        Re: Formatting Johann 'Myrkraverk' Oskarsson <johann@myrkraverk.invalid> - 2026-09-23 20:08 +0800
          Re: Formatting ram@zedat.fu-berlin.de (Stefan Ram) - 2026-09-23 12:42 +0000
            Re: Formatting ram@zedat.fu-berlin.de (Stefan Ram) - 2026-09-23 14:43 +0000
              Re: Formatting ram@zedat.fu-berlin.de (Stefan Ram) - 2026-09-23 15:01 +0000
          Re: Formatting ram@zedat.fu-berlin.de (Stefan Ram) - 2026-09-23 13:38 +0000
        Re: Formatting (was: Best practise for managing Conda environments?) Martin Schöön <martin.schoon@gmail.com> - 2026-09-24 08:31 +0000
          Re: Formatting (was: Best practise for managing Conda environments?) Martin Schöön <martin.schoon@gmail.com> - 2026-09-25 08:53 +0000

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