[Python] Simple typer script gives TypeError

I think typer 0.15.3 (maybe earlier) is broken. I don't make this claim lightly. But if I create a very basic script, I get an error:

pyproject.toml:

[project]
name = "typer-example"
version = "0.1.0"
description = "Add your description here"
readme = "README.md"
requires-python = ">=3.13"
dependencies = [
"typer>=0.15.3",
]


main.py:

import typer

def main(name: str):
print(f"Hello, {name}!")

typer.run(main)


❯ uv run python main.py
# ... stack trace
TypeError: TyperArgument.make_metavar() takes 1 positional argument but 2 were given


I expect default help output rather than a TypeError. Am I missing something? Or is typer broken as of 0.15.3?

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