Screen sharing and capture in Wayland on Gentoo

The article shows the tweaks I had to make to my system in order to
be able to share my screen in Zoom, and capture my screen in 
OBS under Gnome on Wayland on Gentoo.

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## Update
While I thought this was working, when I came to a meeting to share 
my screen, my collegues could not see anything bar a single application.

I did some troubleshooting on my own using Zooms record feature and
was unable to resolve it using the Zoom flatpak package.

I installed Zoom directly as an ebuild and was able to see the entire screen
using that.

Zoom
----

Firstly, I'm using zoom via Flatpak. Flatpak is an official overlay
on Gentoo.

Once flatpak and zoom is installed via:

        flatpak install us.zoom.Zoom

You can enable screen sharing via the following tweaks.

Tweak 1: Allow flatpak to talk to gnome stuff I don't really understand

        sudo flatpak override --talk-name=org.gnome.Shell \
            --talk-name=org.gnome.Shell.Screenshot \
            --talk-name=org.gnome.SessionManager \
            --talk-name=org.freedesktop.PowerManagement.Inhibit \
            --talk-name=org.freedesktop.ScreenSaver us.zoom.Zoom

Ref: https://github.com/flathub/us.zoom.Zoom/pull/182

Tweak 2: Set this in your ~/.var/app/us.zoom.Zoom/config/zoomus.conf

        [General]
        enableWaylandShare=true

OBS-Studio
----------

This guy Georges Stavracas wrote an OBS plugin to interface with 
xdg-desktop-portal. It works quite well and I've written an ebuild
for it to work in Gentoo.

You can add my overlay [here](https://github.com/zigford/gentoo-zigford)
or pilfer my ebuild directly under media-plugins/obs-xdg-portal.

### Hot Tip

At first I could not get it to work, and that is because I lacked the
understanding about how pipewire and xdg-desktop-portal works.
One thing I found sorely lacking is the documentation. Eventually I 
stumbled upon someone saying you need to enable (or start) pipewire:

        systemctl --user enable --now pipewire

Now the plugin allows you to pick your desktop. Strangely, the screenshots
show the ability to choose an app, whereas I can only choose my screen.

Oh well, let me know if you know why.

Cheers

Tags: gentoo, gnome, wayland, zoom, obs