Check that it works

One command. It needs no API key, no AI app and no network:

python check_install.py

It prints which of the nine solvers openPASO can see on your machine, and for each one it cannot see, the command that installs it. If you installed scikit-fem, it must appear with a tick:

✔ Python 3.12 — supported.
✔ openPASO imports, and its tools are registered.

Solvers openPASO can see on this machine — 1 of 9:

  ✔ scikit-fem
      scikit-fem 12.0.2 at /home/you/openPASO/.venv/bin/python
  ✘ NGSolve
      not installed — to get it:  python -m pip install ngsolve
  ...

✔ Install is working: 1 solver(s) ready.

One tick is enough to go on.

If it says	Do this
openPASO itself does not import	Your virtual environment is not active: source .venv/bin/activate, then try again
No solver is usable	pip install scikit-fem, then check again
a solver you installed is missing	If you set its location with export, run the check in the same terminal. For an AI app, the same variable also has to go into the app's settings (see Option A)

Next: choose how to use it.