Quite a late reply to a dead thread, but for anyone reading this in the
future and is interested in implementing tor support, it might be
useful.

Stefan Kangas <stefankangas@gmail.com> writes:

[...]
>
> From a very quick glance at the code:
>
> - Is there anything more needed to add support for Individuous
>   instances?  See: https://invidious.io/
>

(FYI this has been added)

> - Any chance you could add an option like `vc-tor'?

Is it recommended to use 'socks for this?

e.g using a macro like this one:

====
(defmacro yeetube-with-tor-socks (&rest body)
  `(let ((url-gateway-method 'socks)
         (socks-noproxy '("localhost"))
         (socks-server '("Default server" "127.0.0.1" 9050 5)))
     ,@body))
====

This was the easiest way I could find to route traffic using
#'url-retrieve-synchronously to tor.

A built in option like this for url to route all traffic through tor
might be possible?

Additionally, I found the performance of url-retrieve-synchronously to
improve when I set 'url-request-extra-headers' to something like this:

====

'(("Accept-Language" . "Accept-Language: en-US,en;q=0.9")
    ("Accept" . "text/html,application/xhtml+xml,application/xml;q=0.9,image/webp,image/apng,*/*;q=0.8")
    ("User-Agent" . "Mozilla/5.0 (Windows NT 10.0; rv:122.0) Gecko/20100101 Firefox/122.0"))

====

I'm using the user-agent from arkenfox user.js
  <https://github.com/arkenfox/user.js/>

I had url-privacy-level set to 'high, but despite that my user-agent was
"URL/Emacs Emacs/29.2 (X11; x86_64-pc-linux-gnu)". Changing this
improved the performance of #'url-retrieve-synchronously (maybe because
it's not a common user-agent and it required further verification?) &
makes websites that utilize user-agent blocking accessible.

Also, when it comes to 'url-mime-language-string', shouldn't that either
be set to "en" by default (instead of nil) or get a locale value using
something like getenv? I was located in Greece with locale set to en-US
but I was getting Spanish by default on most websites (still trying to
figure out why).

-- 
Information wants to be free.

Thanos Apollo
https://thanosapollo.org