Adding back passing of environment variables to pip package install. This allows the use of credentials via environment variables for private pypi repos.
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Issue #, if available: fixes #126
Description of changes:
Adding back passing of environment variables to pip package install. This allows the use of credentials via environment variables for private pypi repos.
By submitting this pull request, I confirm that you can use, modify, copy, and redistribute this contribution, under the terms of your choice.