Install completion doesn't work for Poetry script in PowerShell

[nelsyeung]

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• I added a very descriptive title here.
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• I already checked if it is not related to Typer but to Click.

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Example Code

import typer

app = typer.Typer()


@app.command()
def hello(name: str):
    typer.echo(f"Hello {name}")

Description

Reproduction steps

1. Open Windows Terminal PowerShell:

   poetry new foo
   cd foo
   poetry add typer

2. In pyproject.toml add (from Building a Package doc):

   [tool.poetry.scripts]
   foo = "foo:app"

3. In foo/__init__.py add the example code.

4. Then run:

   poetry install
   poetry shell
   foo --install-completion

See the error:

Shell cmd is not supported.

This is caused by poetry install will install a foo.cmd inside Scripts, so Typer/click recognise this as cmd instead of PowerShell. Is there a workaround for this?

Additional info

This works if it's not a package. Create main.py):

import typer
app = typer.Typer()
@app.command()
def hello(name: str):
    typer.echo(f"Hello {name}")
if __name__ == "__main__":
    app()

Using the same terminal as the reproduction steps above, run:

python main.py --install-completion

It works:

powershell completion installed in C:\Users\...\Documents\WindowsPowerShell\Microsoft.PowerShell_profile.ps1
Completion will take effect once you restart the terminal

Operating System

Windows

Operating System Details

Edition Windows 11 Enterprise
Version 23H2
Installed on ‎2/‎26/‎2024
OS build 22631.4890
Experience Windows Feature Experience Pack 1000.22700.1067.0
PSVersion 5.1.22621.4391

Typer Version

0.15.2

Python Version

3.9.13

Additional Context

No response