Qtile

From http://qtile.org:

Qtile is a full-featured, hackable tiling window manager written in Python. Qtile is simple, small, and extensible. It is easy to write your own layouts, widgets, and built-in commands. It is written and configured entirely in Python, which means you can leverage the full power and flexibility of the language to make it fit your needs.

Installation

Install one of the following packages:

• qtile for the latest official release.
• qtile-git^AUR for the development version.

In order to run Qtile as a Wayland compositor you will need to install python-pywlroots.

Starting

Xorg

To run Qtile as an X11 window manager, run qtile start with xinit.

Wayland

Start Qtile as a Wayland compositor by running qtile start -b wayland.

For the status of the Wayland development progress of Qtile, see https://github.com/qtile/qtile/discussions/2409.

Configuration

Note: This chapter only explains the basics of the configuration of Qtile. For more complete information, look at the official documentation.

As described in Configuration Lookup, Qtile provides a default configuration file that will be used in absence of user-defined ones.

The default configuration includes the shortcut Super+Enter to open a new terminal (selected from a hardcoded list), and to quit Qtile.

In order to start customizing Qtile, copy it to :

$ mkdir -p ~/.config/qtile/
$ cp /usr/share/doc/qtile_dir/default_config.py ~/.config/qtile/config.py

Where is the name of the package you installed.

Alternatively, the most recent default configuration file can be downloaded from the git repository at libqtile/resources/default_config.py.

Several more complete configuration file examples can be found in the qtile-examples repository.

The configuration is fully done in Python: for a very quick introduction to the language you can read this tutorial.

Before restarting Qtile you can test your configuration file for syntax errors using the command:

$ python -m py_compile ~/.config/qtile/config.py

If the command gives no output, your script is correct.

Groups

In Qtile, the workspaces (or views) are called Groups. They can be defined as following:

Keys

You can configure your shortcuts with the Key class. Here is an example of the shortcut Alt+Shift+q to quit the window manager.

from libqtile.config import Key
from libqtile.command import lazy
...
keys = [
    Key(
        ["mod1", "shift"], "q",
        lazy.shutdown())
   ]
...

You can find out which corresponds to which key with the command Xmodmap.

Sound

You can add shortcuts to easily control the sound volume and state by adding a user to the audio group and using the command-line interface, which can be installed through the package.

Language

You can add shortcuts to easily switch between keyboard layouts in different languages using setxkbmap for example :

Screens

Create one Screen class for every monitor you have. The bars of Qtile are configured in the Screen class as in the following example:

Bars and widgets

You can find a list of all the built-in widgets in the official documentation.

If you want to add a widget to your bar, just add it like in the example above (for the widget). For example, if we want to add a battery notification, we can use the widget:

from libqtile.config import Screen
from libqtile import bar, widget
...
screens = [
    Screen(top=bar.Bar([
        widget.GroupBox(),    # display the current Group
        widget.Battery()      # display the battery state
       ], 30))
   ]
...

Startup

You can start up applications using hooks, specifically the hook. For a list of available hooks see the documentation.

Here is an example where an application starts only once:

Debugging

Qtile writes its log into

xinit

Starting Qtile on a different virtual screen can help diagnosing issues:

$ echo "exec qtile start" > /tmp/.start_qtile; xinit /tmp/.start_qtile -- :2

Xephyr

Qtile provides a Xephyr development script that can be easily modified to instantiate a system-installed package by replacing:

env DISPLAY=${XDISPLAY} QTILE_XEPHYR=1 ${PYTHON} "${HERE}"/../bin/qtile start -l ${LOG_LEVEL} $@ &

with

env DISPLAY=${XDISPLAY} QTILE_XEPHYR=1 qtile start -l ${LOG_LEVEL} $@ &

See also

• Qtile website
• The official documentation
• Qtile examples