en-US/about_bolt_modulepath.help.txt

modulepath
  The modulepath is an ordered list of directories that Bolt loads modules
  from. When Bolt runs a command, it automatically loads modules from the
  modulepath.
   
  While Bolt has a default modulepath, you can also configure your own
  modulepath, which can include directories within the project or directories
  elsewhere on your system. Regardless of whether your project uses a default
  or configured modulepath, Bolt automatically adds directories to the
  modulepath. This includes modules containing core Bolt content, which is
  added to the beginning of the modulepath, and bundled content, which is
  added to the end of the modulepath.
   
  Modules loaded from a directory listed earlier in the modulepath take
  precedence over modules with the same name loaded from a directory later in
  the modulepath. Bolt will not warn or error when two modules share a name
  and instead will ignore modules with a lower precedence.
   
  To learn more about modules, see the 'module' guide.
 
Documentation
  https://pup.pt/bolt-project-reference#modulepath