This report concerns the [oauth2 package on ELPA]. Hope that’s OK. It affects downstream users of it such as `org-gcal' and `org-caldav'. The authentication scheme used by `oauth2' has been deprecated by Google services. I have a patch to update to the newer, recommended way. The OAuth2 maintainer said it would be a good addition, but I should find someone on ELPA that is happy to review it in order to contribute. Is there someone willing to review and merge a potential patch? More details: The current authentication scheme is out-of-band authentication; a code is displayed in the browser and the user copies it into Emacs. The new scheme involves spinning up an (extremely simple) HTTP server on Emacs to handle a redirect in the browser. I have an [implementation of the HTTP authentication handler], and emailed Julien Danjou (the `oauth2' maintainer) about it. Julien said it would be a good incorporation to the package but they don’t have time to review it. Thank you for your time. Adrià Garriga-Alonso [oauth2 package on ELPA] [implementation of the HTTP authentication handler]