Register a new NodeJS installation at the location "/usr/local/bin/node":

Use FindExternalEvaluators to see that the NodeJS installation is registered:

Register a Python installation found at the location "/usr/bin/python3":

Use the newly registered Python:

Register a Python provisioned environment using a name:

Use the newly registered environment by referring to it by name:

Define a reference to a database using SQLite:

Register the database using RegisterExternalEvaluator:

When using ExternalEvaluate, "SQL" will use the most recently registered database:

To unregister the database, use UnregisterExternalEvaluator:

Register a Python installation using a name:

Use the newly registered environment:

The name can also be found when using FindExternalEvaluators:

Unregister all external evaluators with UnregisterExternalEvaluator:

ExternalEvaluate will attempt to provide an evaluator when you do not have registered evaluators anymore:

For the "Python" evaluator, a new installation is created under $UserBaseDirectory:

Register a Python installation using a name:

Registering a different Python installation using the same name will override the previous registration:

Only the latest installation is now registered:

List all current external evaluators for a system:

Unregister all external evaluators for a particular system:

All evaluators for Python are now unregistered:

Register them all again:

All of the Python installations are now registered again: