typing_extensions.Annotated cannot be used with from __future__ import annotations in py38 or py39

[kratsg]

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Example Code

from __future__ import annotations

import typer
from typing_extensions import Annotated

app = typer.Typer(rich_markup_mode="rich")


@app.command()
def foo(
    entry: Annotated[str, typer.Option("-f", "--foo")],
) -> None:
    print('foo')

app()

Description

On python 3.8.10 with typer 0.15.2:

 Usage: debug.py [OPTIONS] ENTRY

╭─ Arguments ─────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────╮
│ *    entry      TEXT  [default: None] [required]                                                                                                │
╰─────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────╯
╭─ Options ───────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────╮
│ --install-completion          Install completion for the current shell.                                                                         │
│ --show-completion             Show completion for the current shell, to copy it or customize the installation.                                  │
│ --help                        Show this message and exit.                                                                                       │
╰─────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────╯

if I comment out the future annotations import, the correct behavior is recovered

 Usage: debug.py [OPTIONS]

╭─ Options ───────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────╮
│ *  --foo                 -f      TEXT  [default: None] [required]                                                                               │
│    --install-completion                Install completion for the current shell.                                                                │
│    --show-completion                   Show completion for the current shell, to copy it or customize the installation.                         │
│    --help                              Show this message and exit.                                                                              │
╰─────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────╯

Operating System

Linux, macOS

Operating System Details

No response

Typer Version

0.16.0

Python Version

3.9.18

Additional Context

#802