Unable to install help extras

[mamertofabian]

Issue

To replicate:

Run aider

/help how do I run the unit tests in this repo?

To use interactive /help you need to install the help extras

C:\Users\atomr\pipx\venvs\aider-chat\Scripts\python.exe -m pip install --upgrade --upgrade-strategy only-if-needed
aider-chat[help] --extra-index-url https://download.pytorch.org/whl/cpu
Run pip install? (Y)es/(N)o [Yes]:

Installing: C:\Users\atomr\pipx\venvs\aider-chat\Scripts\python.exe -m pip install --upgrade --upgrade-strategy only-if-needed aider-chat[help] --extra-index-url https://download.pytorch.org/whl/cpu

Installation complete.

Unable to complete help: Plain typing.TypeAlias is not valid as type argument

Version and model info

Aider v0.62.2.dev0
Main model: claude-3-5-sonnet-20241022 with diff edit format, infinite output
Weak model: claude-3-5-haiku-20241022
Git repo: .git with 357 files
Repo-map: using 1024 tokens, auto refresh
Use /help for help, run "aider --help" to see cmd line args