First Check

• I added a very descriptive title to this issue.
• I used the GitHub search to find a similar issue and didn't find it.
• I searched the Typer documentation, with the integrated search.
• I already searched in Google "How to X in Typer" and didn't find any information.
• I already read and followed all the tutorial in the docs and didn't find an answer.
• I already checked if it is not related to Typer but to Click.

Commit to Help

• I commit to help with one of those options 👆

Example Code

from pathlib import Path
import typer


def main(output: Path | None):
    typer.guess_name(f"Hello {name}")


if __name__ == "__main__":
    typer.run(main)

Description

Using an argument with the type of pathlib.Path | None (as per PEP 604) raise the error:

Type not yet supported: pathlib.Path | None

Wanted Solution

| None types should work instead of having to need to use Optional[].

Wanted Code

from pathlib import Path
import typer


def main(output: Path | None):
    typer.echo(output)


if __name__ == "__main__":
    typer.run(main)

Alternatives

No response

Operating System

Linux

Operating System Details

No response

Typer Version

0.4.0

Python Version

3.10.1

Additional Context

No response