Richard Stallman <rms@gnu.org> writes:

> [[[ To any NSA and FBI agents reading my email: please consider    ]]]
> [[[ whether defending the US Constitution against all enemies,     ]]]
> [[[ foreign or domestic, requires you to follow Snowden's example. ]]]
>
>   > It has been a long time, but I the auth-source-xoauth2 package has
>   > been finally open-sourced:
>
>   > https://github.com/ccrusius/auth-source-xoauth2
>
> "Open source" is the slogan of rejecting our philosophy and our values.
> What we advocate is free software, a totally different idea.

Thanks for pointing that out. The project is indeed free software.

> (snip)
>
> What is the license of the source code of auth-source-xoauth2?
> I wonder if we want to integrate it with ELPA, or Emacs itself.

It is the license my employer recommends in its guidelines for non-work related projects, which need approval before releasing: Apache 2.0.

The manual procedure for making the package work is not simple, requiring one to navigate Google's "development console" in order to create keys and such. Before adding it to ELPA/Emacs I would think it would be better to have a "complete" solution that skips that step. The complete process is described here:

https://developers.google.com/identity/protocols/OAuth2

> Are you the author of auth-source-xoauth2?

Yes.

-- 
Cesar Crusius