How to configure `conda` to stop using `defaults` channels

By default, the defaults channel alias points to three sources at https://repo.anaconda.com, which are covered by the Anaconda, Inc., Terms of Service.

There is a good chance your configuration is using some or all of these channels. Here is how to fix that. Conda configuration is held in .condarc files at the user and folder levels (and possibly the system level, this is not commonly configured by default).

1. Show default channels with conda config --show default_channels.
2. Verify what channels are being used with conda config --show channels.
3. Also try conda config --show-sources to know which .condarc files are configuring the channels.
4. Use conda config --remove channels defaults to remove the defaults channel alias from your user-level config.
5. Use conda config --append default_channels conda-forge. If that doesn't work, replace --append with --set.

At the end, when using conda config --show you should have no channels: key and you should have the following as part of your configuration.

default_channels:
  - conda-forge

Be sure to run conda clean --all --yes once, and pip cache purge in all relevant environments, including the base environment.

Start by locating the repository's documentation entry point for Conda configuration; no specific file or test is named in the issue. Check the listed conda commands and ensure the documentation explains removing defaults, setting conda-forge, cleaning caches, and verifying the resulting configuration.