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You should avoid using conda through the Anaconda or Miniconda distributions, as you may run into licensing issues. Access to Anaconda’s public repository of packages is only free to individuals and small organisations (<200 employees). A paid license is required for larger organisations and anyone embedding or mirroring Anaconda’s repository. See Anaconda's Terms of Service for details.

The use of Miniforge is recommended instead, which provides the minimal installers for Conda and Mamba specific to conda-forge, with the following features pre-configured:

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If you have any installation of Anaconda or Miniconda, or any conda environment using packages from Anaconda's default channels, you must remove them and recreate your environments using an alternative method.

If working on ECMWF's Atos HPCF or ECS , you can may (in order of preference):

• Use tykky, which uses uses Miniforge internally to create a containerised environment. It may give you the best performance results. 
• Use provided conda module, which is based on on Miniforge. Resulting Note, however, that resulting environments on shared filesystems such PERM may suffer from slow performance.
• Install Install Miniforge on your own space. This option is discouraged in favour of above alternatives, and only to be used only if those solutions cannot satisfy your requirements.

If working on personal laptops of or any other ECMWF computing platform, including the European Weather Cloud:

• Install Install Miniforge if not already installed on a data layout and migrate your environments and remove the previous anaconda/miniconda installation.

Check below for instructions on what to do to detect and migrate existing environments to alternative solutions.

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