Taffybar
Taffybar is a gtk+3 (through gi-gtk) based desktop information bar, intended primarily for use with XMonad, though it can also function alongside other EWMH compliant window managers. It is similar in spirit to xmobar, but it differs in that it gives up some simplicity for a reasonable helping of eye candy.
Before Installing
Taffybar's installation procedure varies depending on whether or not you intend
to setup a new haskell project and use startTaffybar or use the dyreTaffybar
with a global haskell installation . It is important for you to read this
section so you can understand what all of that means before you decide how you
want to install taffybar.
Taffybar is a library
As with window managers like XMonad and dwm, taffybar is most appropriately described as a library that allows you to build an executable that is customized to your tastes. This means that taffybar must be installed alongside a haskell compiler (ghc) that can compile the user's configuration source file.
The taffybar binary and startTaffybar vs dyreTaffybar
Taffybar can be started from your configuration file in two different ways:
dyreTaffybar
The dyreTaffybar entry point to taffybar uses the dyre
library to automatically recompile your
taffybar configuration whenever it detects that it has changed. The binary that
is distributed with taffybar does nothing more than call this entry point. The
main downside of this approach is that it does not allow the user to use any
sort of project files for their configuration, and they must have any packages
that are necessary for compilation of their configuration available in their
global ghc environment.
startTaffybar
The startTaffybar entry point to taffybar simply starts taffybar with the
provided configuration. The user binary will not be automatically recompiled
when source files change. The advantage of using startTaffybar directly is
that you can use that in the main function of a cabal project.
Distribution Packaging
Several linux distributions package taffybar (nixos, arch/aur, debian). Of these, only the NixOS distribution is officially supported by the maintainers. Using any of the others should be pretty similar to using a bare cabal installation of taffybar.
NixOS
If you wish to use the NixOS package for taffybar, make sure that you are using the module, and not simply the haskellPackage for taffybar. If you need to add additional haskell packages to the environment that compiles your taffybar.hs you will need to invoke that module and use the packages parameter to allow this.
It is also possible to run/use taffybar on NixOS without using this module by using a standalone haskell project for the taffybar configuration.
Using the overlay.nix when taffybar is broken in nixpkgs
The taffybar haskell package in nixpkgs has been broken in the unstable channel from time to time. This repository provides a nix overlay file which can be used to build taffybar with current versions of nixpkgs. See this comment for details on how to use the overlay.
Installation From Hackage/Source
Prerequisites
If you are not using distribution packaging of taffybar or the nix package manager (it will handle getting all the necessary packages for you), you will need to install all of taffybar's non-haskell dependencies manually.
Start by making sure you have installed everything that is needed for haskell-gi. Taffybar also needs the
equivalent of libdbusmenu-gtk3-dev and libgirepository1.0-dev on Debian.
You can also get some idea of what the necessary dependencies are by looking at the nix section of the stack.yaml file in the taffybar repository.
Cabal
Cabal installation is a simple matter of installing taffybar from hackage:
cabal install taffybar
You do not need to do this if you are using the project approach with cabal.
The project approach
The project approach to installing/using taffybar involves maintaining a small
haskell project that produces the users taffybar binary. No matter which package
manager you choose to use you will need to make a .cabal file for this project.
It is recommended that you use this
example
as a template. In that example, the users configuration resides in the file
taffybar.hs in the same directory, but that can be changed as needed. As of
right now, dyreTaffybar is incompatible with this approach because dyre simply
calls ghc directly.
Cabal
Simply run cabal new-install to install the binary.
Stack
With stack, you will also need to maintain a stack.yaml file. Run stack install to install the binary. See this
example
Nix
You will need to add default.nix file to your package. See this example
You may also need to use the overlay provided by this repository. See this comment for details.
Overlay
The taffybar haskell package is currently broken in nixpkgs, because some of its dependencies are not compiling correctly/are not sufficiently new. The environment.nix file in this repository fixes these build issues with an overlay. The overlay.nix file extends the environment overlay so that it overrides the taffybar package's build description to build the nix taffybar package from the repository source directory. An example of how to set up nixpkgs to use the taffybar overlay can be found here.
Configuration
Like xmobar and XMonad, taffybar is configured in haskell. Taffybar depends on
dyre to automatically detect changes to its configuration file
($XDG_CONFIG_HOME/taffybar/taffybar.hs) and recompile when appropriate.
For more details about how to configure taffybar, see the full documentation. You can find a list of available widgets here
FAQ
For the time being, taffybar's frequently asked questions page lives in this github issue.
Contributing
Taffybar desperately needs contributors. If you want to help, but don't know where to get started you can check out our "help wanted" and "easy" labels:
