Version 30 of GNU Emacs introduces a user option variable
`Info-url-alist' that allows to associate Info manuals to URLs.
Its default value only associates those Info manuals that are part
of Emacs.  This package provides the variable `communinfo' which
can be used as value for `Info-url-alist' that provides
URL-associations for many more free, libre and open source software
projects.

Here's how to use `communinfo' after installation:

  (require 'info)
  (require 'communinfo)

  (setopt Info-url-alist communinfo-url-alist)