balsoft / lambda-launcher

Application launcher in haskell. Mostly Just For Fun.

λauncher

λauncher is a GTK launcher application built with Haskell and gtk-gi-declarative.

Screenshots

Features

• Asynchronous plugin result loading
• No runtime settings (not a bug, but a feature)
• 5M memory on coldstart, 20M memory when all plugins are loaded
• Very quick startup (compared to some other graphical launchers

Configuration

All configuration at this moment is done by editing source files. This will be changed in the future to XMonad-style configuration.

Plugins

To configure the plugins, edit plugins :: [Plugin] in src/Main.hs. You should be able to just edit the list of plugins to disable the unneeded ones. All of plugins are enabled by default.

Triggers

Apply trigger to a plugin to make it the only plugin shown when query starts with a trigger, and apply triggerStrict to show a plugin only when it's triggered.

Window

Edit configuration top-level binding in src/Main.hs. The Configuration type constructor's field names should be self-explanatory.

Building

Nix

nix build should do everything for you.

Cabal

cabal new-run works for me. If it doesn't, add an issue!

Current list of plugins

Name	Trigger	Description	Required dependencies	Optional dependencies
Clipman	cp	get entries from clipman clipboard manager	clipman
Command	$	run shell commands, with suggestions
Duckduckgo	ddg	search the web with DDG instant answers
Emacs	em	open emacs in a directory from ~/projects	emacs	nix-shell
Files	file	list and open files
Google	g	search some text through google's web interface
GoogleTranslate	tr	translate words and phrases with Google's api
Kill	kill	kill other processes	pkill, ps
Pass	pass	copy passwords from password store to the clipboard	pass
Qalc	q	use libqalculate to evaluate expressions	qalc
Stackoverflow	so	search for questions with similar titles
Sway	sw	list and focus windows on sway	swaymsg
Wiki	wiki	search english wikipedia
Wmctrl	win	list and focus windows on X11	wmctrl

If a plugin doesn't work, make sure you've installed the corresponding dependencies!

Extending

• Create src/Plugins/YourPlugin.hs that exports yourPlugin :: String -> IO [Types.Result]
• Add the corresponding import to src/Plugins/Main.hs
• Don't forget to add yourPlugin to plugins list
• Send a PR!

Code of conduct

All contributions are welcome! There are no restrictions.

License

This work is in public domain. By sending Pull Requests you agree that all of your work assosiated with this software is in public domain as well.

This only applies to the code contained in this repository, to see licenses of it's dependencies visit their respective pages.

WARRANTY

THIS SOFTWARE COMES "AS IS", WITHOUT ANY WARRANTY (IMPLIED OR OTHERWISE) TO THE EXTENT PERMITTED BY THE APPLICABLE LAWS. IT MAY CAUSE DATA CORRUPTION OR LOSS. BY RUNNING THIS SOFTWARE YOU AGREE THAT IT'S AUTHOR(S) ARE NOT RESPONSIBLE FOR ANY DAMAGE CAUSED BY THIS SOFTWARE.