In the current instructions (https://idaes-pse.readthedocs.io/en/stable/advanced_user_guide/advanced_install/index.html), an advanced user installs the idaes dependencies including pyomo using pip install . (or a similar command).

What if you want to test out an alternative branch of Pyomo (e.g., main branch)?

Follow the same instructions as linked above. If you already ran pip install, we need to remove pyomo and pyutlib:

pip uninstall pyomo pyutilib

Be sure to run this is the conda environment you created as part of the advanced installation instructions! Then in the conda environment, run:

git clone https://github.com/Pyutilib/pyutilib
cd pyutilib
pip install -e .

git clone https://github.com/Pyomo/pyomo
cd pyomo
pip install -e .

Tip: Do NOT put these pyutlib and pyomo folders inside your idaes-pse folder. All three of these folders are git repositories. It is a really bad idea to checkout a git repository inside a git repository; unexpected things can happen.

Note: pyutlib is no longer needed with Pyomo 6.0 (to be released in a few months).

Inside the pyomo folder, you can use git to switch between different branches and remotes.