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COSMIC is a desktop environment developed in the Rust programming language, using the iced cross platform GUI library for Rust, and Smithay as building blocks for its compositor, cosmic-comp. Cosmic-comp is comparable to smithay's own anvil compositor demonstration, just like the Wayland project uses Weston as demo compositor.
COSMIC is a [[:Category:Desktop environment|desktop environment]] developed in the [[Rust]] programming language, using the iced cross platform GUI library for Rust, and Smithay as building blocks for its compositor, cosmic-comp. Cosmic-comp is comparable to smithay's own anvil compositor demonstration, just like the Wayland project uses Weston as demo compositor.


== Installation ==
COSMIC was primarily developed for use in the [https://pop.system76.com/ Pop!_OS] distribution.


Currently packaged in nixpkgs master/unstable are below, one way to install them is to use a configuration file like this:
== NixOS module (starting with NixOS 25.05) ==


<syntaxhighlight lang="nix">
COSMIC support in nixpkgs is still in development. You can follow progress via [https://github.com/NixOS/nixpkgs/issues/259641 the tracking issue].


{ config, pkgs, ...}:
You can enable COSMIC on your NixOS system by setting the following configuration options: <syntaxhighlight lang="nix">{
 
   # Enable the COSMIC login manager
let
  services.displayManager.cosmic-greeter.enable = true;
   unstable = import
    (builtins.fetchTarball https://github.com/nixos/nixpkgs/tarball/master)
    # reuse the current configuration
    { config = config.nixpkgs.config; };
in


  # Enable the COSMIC desktop environment
  services.desktopManager.cosmic.enable = true;
}</syntaxhighlight>Support for automatic logins is present when using the `cosmic-greeter` login manager. All you need is the following configuration: <syntaxhighlight lang="nix">
{
{
   environment.systemPackages = with pkgs; [
   services.displayManager.autoLogin = {
     unstable.rustc
     enable = true;
     unstable.just
     # Replace `yourUserName` with the actual username of user who should be automatically logged in
     unstable.cosmic-icons
     user = "yourUserName";
    unstable.cosmic-settings
   };
   ];
}
}
</syntaxhighlight>
</syntaxhighlight>Alternatively, there is a [https://github.com/lilyinstarlight/nixos-cosmic flake] to setup COSMIC on NixOS.
 
You would add it to your main configuration.nix file in /etc/nixos/ like this:
 
<code>
  imports =
      [
          ./hardware-configuration.nix
          ./unstable.nix
      ];
</code>
 
then rebuild:
 
<code>
sudo nixos-rebuild switch
</code>
 
=== COSMIC Comp ===
 
https://github.com/NixOS/nixpkgs/tree/nixos-unstable/pkgs/applications/window-managers/cosmic/comp
 
=== COSMIC Panel ===
 
This also includes the Dock:
 
https://github.com/NixOS/nixpkgs/tree/nixos-unstable/pkgs/applications/window-managers/cosmic/panel
 
=== COSMIC Applet ===
 
https://github.com/NixOS/nixpkgs/tree/nixos-unstable/pkgs/applications/window-managers/cosmic/applets
 
=== COSMIC Settings ===


https://github.com/NixOS/nixpkgs/tree/master/pkgs/applications/window-managers/cosmic/settings
== COSMIC packages ==


=== COSMIC Icons ===
While the whole desktop is not configured many packages are available in nixpkgs already. You can search for packages with a query similar to this one https://search.nixos.org/packages?query=cosmic&from=0&size=1000&sort=relevance&channel=unstable. Note that not all of the results will be part of the COSMIC desktop.


https://github.com/NixOS/nixpkgs/tree/a10c1225467f721dedbaaa260c006d6d15c8c40b/pkgs/by-name/co/cosmic-icons
[[Category:Desktop environment]]
Retrieved from "https://wiki.nixos.org/wiki/COSMIC"