See Github Copilot VS Code extension is not working with NixOS install of VS Code 1.71 - it is not recognised as a recent enough version for Github Copilot · community · Discussion #33392 · GitHub for somebody else’s post on GitHub’s discussion forum. They circumvented the problem by using flatpak, but I’m not sure why the copilot extension keeps seeing VSCode as outdated here.
Does anyone have any tips for debugging the vscode and copilot extension packages to see where the issue occurs?