Option to skip duty based on a condition

[pawamoy]

Is your feature request related to a problem? Please describe.
I've been using the following pytest-inspired decorator in some of my projects when a duty cannot run on a specific Python version:

def skip_if(condition: bool, reason: str):
    """Decorator allowing to skip a duty if a condition is met.

    Parameters:
        condition: The condition to meet.
        reason: The reason to skip.

    Returns:
        A decorator.
    """

    def decorator(func):
        @wraps(func)
        def wrapper(ctx, *args, **kwargs):
            if condition:
                ctx.run(["true"], title=reason)
            else:
                func(ctx, *args, **kwargs)

        return wrapper

    return decorator

...allowing to do this for example:

@duty
@skip_if(
    sys.version_info < (3, 8) or sys.version_info >= (3, 11),
    reason="Checking docs is not supported on Python 3.7 and 3.11, skipping",
)
def check_docs(ctx): ...

Describe the solution you'd like
Could be nice to provide that natively.

Describe alternatives you've considered
Custom code in projects.

Additional context
/