Yambar is a lightweight and configurable status panel (bar, for short)
for X11 and Wayland, that goes to great lengths to be both CPU and 
battery efficient - polling is only done when absolutely necessary.
It has a number of modules that provide information in the form of tags.
For example, the clock module has a date tag that contains the 
current date.
The modules do not know how to present the information though.
This is instead done by particles. And the user, you, decides 
which particles (and thus how to present the data) to use.
Furthermore, each particle can have a decoration - a background color or
a graphical underline, for example.
There is no support for images or icons. use an icon font 
(e.g. Font Awesome, or Material Icons) if you want a 
graphical representation.
There are a number of modules and particles builtin. More can be added 
as plugins. You can even write your own!
To summarize: a bar displays information provided by modules, using 
particles and decorations. How is configured by you.
Yambar is configured using YAML, in ~/.config/yambar/config.yml
For details, see the man pages yambar(5) is a good start.i

Available modules:

•alsa
•backlight
•battery
•clock
•i3 (and Sway)
•label
•mpd
•network
•removables
•river
•script 
•sway-xkb
•xkb (XCB backend only)
•xwindow (XCB backend only)

If you need to rebuild the package delete /tmp/SBo/yambar directory.