Wayland

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Checking for Wayland

To check if you are using Wayland, run the following command

$ echo $XDG_SESSION_TYPE

If wayland is returned, you are running Wayland

Setup

Two things are required for running Wayland: a compatible Display Manager, and a compatible Compositor.

This article or section needs expansion.

Reason: Verify completeness of DM and Compositor lists (Discuss in Talk:Wayland#)
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Display Managers

Display Managers are responsible for handling user login.

The following Display Managers support using both X and Wayland protocols

Graphical

gdm is the GNOME Display Manager.
sddm is the default Display Manager for KDE. Wayland support is currently experimental.

Text-based

Compositors

For the purposes of this basic overview, a compositor can be thought of as equivalent to an X Desktop Environment.

Note: It is important to remember that this is not actually the case as there are multiple differences between how X and Wayland work internally

Wayland Native

Sway is a i3-like compositor.
Hyprland the dynamic tiling Wayland compositor that doesn't sacrifice on its looks.

X and Wayland support

Mutter is the default GNOME Desktop Environment/Compositor.
Plasma is the default KDE Desktop Environment/Compositor.

Applications

Not all apps support running natively on Wayland. To work around this, XWayland should be enabled.

Note: Enabling XWayland varies slightly from Compositor to Compositor, and may already be enabled. Consult your Compositor's documentation and/or nix file for how to enable

Electron and Chromium

As of NixOS 22.05 ("Quokka"), you can enable Ozone Wayland support in Chromium and Electron based applications by setting the environment variable NIXOS_OZONE_WL=1. For example, in a configuration.nix:

environment.sessionVariables.NIXOS_OZONE_WL = "1";

This allows these applications to run without Xwayland.

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