It works for me. I had to run "PulseAudio volume control" or pulsemixer 
and select BT headpone as output.

I am not using Gnome. My config is basically i3 + xfce4.

On 12/12/21 08:23, Grigory Shepelev wrote:
> Bluetoothctl also works. So the problem is not bluetooth itself but 
> it's "connection" with audio in gnome's default way.
>
> вс, 12 дек. 2021 г. в 10:18, Grigory Shepelev <shegeley@gmail.com>:
>
>     Installed guix a few weeks ago on my desktop PC and just yesterday
>     on my laptop (thinkpad L13). Having the same problem on both of them.
>
>     Gnome's default bluetooth "app" doesn't work.
>
>     After having the same config as in your example I can launch
>     blueman-manager and connect to my bluetooth sound system. It makes
>     a sound as if it's connected and displays itself as connected but
>     I can't pick it as an output device in gnome's setting "sound" tab.
>
>     How have you dealt with this?
>
>     (nonnative in english, sorry for possible mistakes)
>