Enforcing copilot to use uv or activate the corresponding virtualenv?

[Anselmoo]

Select Topic Area

Product Feedback

Copilot Feature Area

Copilot Agent Mode

Body

Can we enforce GitHub Copilot in Agent-Mode to use uv run python instead of the regular python? I often encounter an issue where I have to halt the process because the Agent switches from uv run python to python, causing it to crash.

See also: microsoft/vscode#237338

[bandirevanth]

PLEASE NOTE: As of now, Copilot Agent Mode does not allow setting a preferred interpreter or runtime (e.g., uv, poetry, etc.).

Good solutions:

1. Alias python Globally (Quick and Dirty)

Edit your shell configuration (~/.bashrc, ~/.zshrc, or ~/.profile) and add:
alias python='uv run python'

Then reload your shell:
source ~/.bashrc # or the appropriate config file

⚠️ This method replaces python globally in your shell. Use it only in controlled environments (like project workspaces).

2. Use .envrc with direnv (Recommended Per-Project)

Install direnv if you haven’t already.

➤ Step 1: Enable direnv in your shell
echo 'eval "$(direnv hook bash)"' >> ~/.bashrc # or use zsh/fish
source ~/.bashrc

➤ Step 2: In your project folder
Create a .envrc file:
# .envrc
export PATH="$HOME/custom-bin:$PATH"

Allow it:
direnv allow

You can also add:
source .venv/bin/activate
For automatic virtual environment activation per directory.

3. Activate uv venv Automatically

If you're using uv to manage virtual environments:
uv venv
source .venv/bin/activate

To automate activation on terminal launch or project open:
Add this snippet in your .bashrc or .zshrc. ⬇

if [[ -f .venv/bin/activate ]]; then  
  source .venv/bin/activate
fi

[Anselmoo]

Thanks a lot for the detailed solutions