nix.dev/live.py

from livereload import Server, shell

server = Server()

build_docs = shell("make html")

print("Doing an initial build of the docs...")
build_docs()

server.watch("source/*", build_docs)
server.watch("source/**/*", build_docs)
server.watch("_templates/*.html", build_docs)
server.serve(root="build/html")