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I'd love to be able to codify my channel selections in my conda_build_config.yaml file. I tried including this text in that file:

channels:
  - dbanas
  - defaults
  - conda-forge

but to no avail. (I still had to include: -c dbanas -c defaults -c conda-forge on my conda build command line, in order to get a successful build.)

Is there any way to codify channel selections in the conda_build_config.yaml file?

dbanas
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1 Answers1

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Technically, additional channels can be specified in Conda Forge (via channel_sources key in conda-forge.yml), but practically, it is almost never allowed. Here is an example where we tried to use pytorch channel in order to support Windows for PyMDE. The Pull Request and build rendered fine, but then the CI blocked the upload of the packages to Anaconda Cloud.

Generally, recipes must use only conda-forge channel. A principal motivation is that this allows conda install -c conda-forge <pkg> to just work. All the questions on SO where users try conda install -c bioconda <pkg> and it fails are practical examples of why it is troublesome to depend on multiple channels, especially when Anaconda Cloud has no support for showing users something like conda install -c conda-forge -c bioconda <pkg> (the proper command).

merv
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