Install one.el

one.el depends on jack and htmlize packages that are available on Melpa. Once you have them installed you can add one.el to your load-path and require it like this:

(add-to-list 'load-path "/path/to/one.el/")
(require 'one)

one.el is also available on Melpa so you can install it like this:

M-x package-install <RET> one <RET>

If you're using straight.el, to install one.el you just have to add this sexp to your init file:

(straight-use-package
 '(one :type git :host github :repo "tonyaldon/one.el"))

Now you can create a new website by calling one-default-new-project (preferably in an empty directory) and you can build it by calling one-build command.

If this is the first time you try one.el reading Getting started page might be helpful.