Github Codespaces generates a pythonenv3.8 directory inside of the llvm-project checkout. This is a diff to .gitconfig so that this directory is ignored.
Github Codespaces is a new Github feature that lets you go to the llvm-project github, click a button and get an editor and a whole checkout of the project.
It creates a pythonenv3.8 directory in the projects checkout, and I think it would be nice if it were ignored unless theres a good reason it shouldn't be?