_: {
  # Used to find the project root
  projectRootFile = "flake.nix";

  # Files not to format.
  settings.global.excludes = [
    ".editorconfig"
    "LICENSE"
  ];

  # nix
  programs.nixfmt.enable = true; # As of 2024-07-30 this is nixfmt-rfc-style.
  programs.statix.enable = true;
  programs.deadnix.enable = true;

  # markdown
  programs.prettier = {
    enable = true;
    settings = {
      editorconfig = true;
    };
  };
}