gubar

A hackable Swaybar generator, written and configured with Guile Scheme.

Try it using Guix shell

cd gubar/
guix shell guile -f guix.scm -- guile -e "((@ (gubar) main))" 

Installing

Dependencies

• Guile 3
• guile-fibers
• guile-json

Guix

This will install gubar and the require dependencies into your Guix profile:

cd gubar/
guix package -f guix.scm

Then you can run using your own profile:

guile -e "((@ (gubar) main))

Integrating with swaybar

Create a script called gubar.sh in ~/.config/sway/:

#!/bin/sh

# If you installed just take the text after "--"
guix shell guile -f ~/Workspace/gubar/guix.scm -- guile -c "((@ (gubar) main))"

Then, in your ~/.config/sway/config, execute the script:

bar {
    ...
    status_command ~/.config/sway/gubar.sh
    ...

Configuration

Gubar will look for a config file in ~/.config/gubar/config.scm before falling back to the default config, which is just the system time.

The config.scm file must return a list of gublocks in the order in which you want them displayed, from left to right. You may use the bundled blocks in (blocks/)[./src/gubar/blocks/] or create your own using the helper procedure gublocks that exists in the gubar gublock module.

gublock

Subject to change!!!

(gublock 
    #:block [block] 
    #:interval [interval]
    #:procedure [procedure]
    #:click-handler [click-handler]
    #:signal [signal])

Key	Description	Example
block	Initial block represented as an assoc list.	'(("full_text" . "foo"))
interval	Time in seconds in which this block updates	seconds or 'persistent
procedure	The main procedure that will be run after interval. Receives a and returns a <block> record.	(lambda (block) block)
click-handler	The procedure that is run when this block is clicked. The block must have its name field set.	(lambda (event block) (block))
signal	SIGRTIMIN offset that this block will be listening on and refresh on. Can be triggered by sending a SIGRTMIN+signal to the guile process running gubar -- pkill -SIGRTMIN+signal -f -n gubar.scm	2

TODO

• Make configuration more ergonomic with some kind of syntax for defining blocks, instead of having to use assoc lists.
• Try to use channels to send click updates to a block instead of finding the block and updating manually (maybe)
• Better error handling or assertions
• Fix guix.scm to install with gnu-build-system so that we can install the script as a program with default configs, docs, etc.