this is a really weird error that frankly should not happen, the package that was not found is called
`package_name`
that means something got really messed up there.
here is what I found googling:
stackoverflow.com/questions/35224186/conda-create-environment-fails-with-error-no-packages-found
stackoverflow.com/questions/42026224/packagenotfounderror-when-creating-new-conda-environment
see if any of those help? Did you run `conda config` by any chance as one of the posts mention?
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