Request for inter-option dependency

[mmzeynalli]

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Example Code

import typer
app = typer.Typer()

@app.command()
def main(
    enc: str = typer.Option("cp1252", "--encoding", "-e"),
    input_file: typer.FileText = typer.Option(..., "--input", "-i"),
) -> None:
    # Cannot use this with the desired encoding, need to use the classic open function
    input_name: str = input_file.name
    input_text: str = input_file.read()

Description

So in the Example code, I have two options: file and its encoding. I can use the str type for input_file as well and use Python's open function, but that defeats the purpose, of course. What would be really efficient would ability to do the following:

import typer
app = typer.Typer()

@app.command()
def main(
    input_file: typer.FileText = typer.Option(..., "--input", "-i", encoding=typer.Option("cp1252", "--encoding", "-e")),
) -> None:
    input_name: str = input_file.name
    input_text: str = input_file.read()

OR

@app.command()
def main(
    enc: str = encoding=typer.Option("cp1252", "--encoding", "-e"),
    input_file: typer.FileText = typer.Option(..., "--input", "-i", encoding=typer.DependsOn("enc")),
) -> None:
    input_name: str = input_file.name
    input_text: str = input_file.read()

Operating System

Windows

Operating System Details

No response

Typer Version

0.6.1

Python Version

3.10

Additional Context

No response