Part of the inputs during a setup through CLI are only validated after all inputs have been given.

[agoscinski]

For example with verdi computer setup you can input a label which is invalid (because already stored) and it will error out after you input everything, while for other parameters as the transport and scheduler plugin, it will error out immediately. Also for the profile the profile name is immediately validated while when a code is created the whole validation seems to happen at the end.

[agoscinski]

For me to use later. Code that was already implemented in the pydantic PR that should check label uniqueness:

@field_validator('label')
@classmethod
def validate_label_uniqueness(cls, value: str) -> str:
    """Override the validator for the ``label`` of the base class since uniqueness is defined on full label.
    """
    return value


@model_validator(mode='after')  # type: ignore[misc]
def validate_full_label_uniqueness(self) -> AbstractCode.Model:
    """Validate that the full label does not already exist."""
    from aiida.orm import load_code

    full_label = f'{self.label}@{self.computer.label}'  # type: ignore[attr-defined]

    try:
        load_code(full_label)
    except exceptions.NotExistent:
        return self
    except exceptions.MultipleObjectsError as exception:
        raise ValueError(f'Multiple codes with the label `{full_label}` already exist.') from exception
    else:
        raise ValueError(f'A code with the label `{full_label}` already exists.')


@field_validator('label')
@classmethod
def validate_label_uniqueness(cls, value: str) -> str:
    """Validate that the label does not already exist."""
    from aiida.orm import load_code

    try:
        load_code(value)
    except exceptions.NotExistent:
        return value
    except exceptions.MultipleObjectsError as exception:
        raise ValueError(f'Multiple codes with the label `{value}` already exist.') from exception
    else:
        raise ValueError(f'A code with the label `{value}` already exists.')