home/dotfiles/config/emacs/modules/app-http.el
home/dotfiles/config/emacs/modules/lang-doc-markup.el
home/tools-extra.nix
You can also use your local clone with git send-email.
https://nixos.org/manual/nixos/stable/index.html#sec-writing-modules https://nix-community.github.io/home-manager/index.html#ch-writing-modules