> One of us misread the article. I understood it to say that they want to rewrite the core of the Python code to Rust so that they don't have to wait for the Py

> One of us misread the article. I understood it to say that they want to rewrite the core of the Python code to Rust so that they don't have to wait for the Python interpreter to start every time someone uses the hg command. It would still use the Python interpreter internally but they want to skip it for some functionality like the basic command line interface. So they would embed the Python interpreter in their new distribution. However the Python code still just calls out to other Rust code.