Function python_integrity_inputs 

pub fn python_integrity_inputs(
    files: &PythonFiles,
    command: &[String],
) -> ExplicitIntegrityInputs

Integrity inputs: sources and tests are hashed separately, dependency and configuration files identify the environment, and the test command identifies execution.

The ambient environment is deliberately absent. It is not a property of the project, it changes with every terminal, and folding it in made a run identity that no two machines could agree on. What a project actually needs from its environment is declared in the files above.