• Conda environments https://docs.conda.io/projects/conda/en/latest/user-guide/tasks/manage-environments.html#create-env-file-manually
• pip-tools https://github.com/jazzband/pip-tools

conda env create -f environment.yml conda activate py-elastic-int

• create/upgrade new requirements.txt (may be skipped)

pip-compile requirements.in
pip-compile --upgrade requirements.in

• install packages from requirements.txt Be careful: pip-sync is meant to be used only with a requirements.txt generated by pip-compile. pip-sync # currently tries to uninstall pre-installed packages by conda environment pip-sync --user