[QUESTION] eagerness to mimic click.option ?

First check

• I used the GitHub search to find a similar issue and didn’t find it.
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Description

how can I mimic the following

@click.option(
    "--version",
    is_flag=True,
    callback=print_version,
    expose_value=False,
    is_eager=True,
    help="Display version and exit.",
)

added to a command it shortcuts the command to run the callback (described here: https://click.palletsprojects.com/en/7.x/options/#callbacks-and-eager-options)

I tried the following yet the callback is called no matter a command is or is not entered, even --help is shortcut so I may be using the typer.Option wrongly or the is_eager kwarg is not used, no idea 😃

click version:

def print_version(ctx, param, value):
    if not value or ctx.resilient_parsing:
        return
    click.echo('Version 1.0')
    ctx.exit()

@click.command()
@click.option('--version', is_flag=True, callback=print_version,
              expose_value=False, is_eager=True)
def hello():
    click.echo('Hello World!')

$ hello
Hello World!
$ hello --version
Version 1.0

typer version

import typer

app = typer.Typer()


def print_version(ctx, param, value):
    if not value or ctx.resilient_parsing:
        return
    typer.echo('Version 1.0')
    ctx.exit()


@app.command()
def hello(version: str = typer.Option('--version', is_flag=True, callback=print_version, expose_value=False, is_eager=True)):
    typer.echo('Hello World!')


if __name__ == '__main__':
    app()

$ python version.py
Version 1.0
$ python version.py --version
Error: --version option requires an argument
$ python version.py version
Version 1.0

[randallpittman]

Hi, Is there a way to have a --version-type eager option with required Arguments? That is, the arguments are required unless you’re just calling --version.

[euri10]

thanks