nixpkgs/nixos/doc/manual/shell.nix

let
  pkgs = import ../../.. {
    config = {};
    overlays = [];
  };

  common = import ./common.nix;
  inherit (common) outputPath indexPath;

  web-devmode = import ../../../pkgs/tools/nix/web-devmode.nix {
    inherit pkgs;
    buildArgs = "../../release.nix -A manualHTML.${builtins.currentSystem}";
    open = "/${outputPath}/${indexPath}";
  };
in
  pkgs.mkShell {
    packages = [
      web-devmode
    ];
  }