A platform toolkit based on iced which provides the building blocks for developing the future COSMIC desktop environment. Applications and applets alike are equally supported targets of Libcosmic. Applets integrate directly with COSMIC's interface as shell components, which was made possible by the Layer Shell protocol of Wayland.

Libcosmic is written entirely in Rust, with minimal dependence on system libraries. On Pop!_OS, the following dependencies are all that's necessary compile the cosmic library:

sudo apt install cargo cmake just libexpat1-dev libfontconfig-dev libfreetype-dev pkg-config

Some examples are included in the examples directory to to kickstart your COSMIC adventure. To run them, you need to clone the repository with the following commands:

git clone https://github.com/pop-os/libcosmic
cd libcosmic
git submodule update --init --recursive

If you have already cloned the repository, run these to sync with the latest updates:

git fetch origin
git checkout master
git reset --hard origin/master
git submodule update --init --recursive

The examples may then be run by their cargo project names, such as just run cosmic-design-demo.

To create a new COSMIC project, use cargo new {{name_of_project}} to create a new project workspace, edit the Cargo.toml contained within, and add this to begin.

[workspace.dependencies.libcosmic]
git = "https://github.com/pop-os/libcosmic"
default-features = false
features = ["wayland", "tokio"]

Available cargo features to choose from:

• a11y: Experimental accessibility support.
• animated-image: Enables animated images from the image crate.
• debug: Enables addtional debugging features.
• smol: Uses smol as the preferred async runtime.
  • Conflicts with tokio
• tokio: Uses tokio as the preferred async runtime.
  • If unset, the default executor defined by iced will be used.
  • Conflicts with smol
• wayland: Wayland-compatible client windows.
  • Conflicts with winit
• winit: Cross-platform and X11 client window support
  • Conflicts with wayland
• wgpu: GPU accelerated rendering with WGPU.
  • By default, softbuffer is used for software rendering.
• xdg-portal: Enables XDG portal dialog integrations.

• COSMIC App Library
• COSMIC Applets
• COSMIC Launcher
• COSMIC Notifications
• COSMIC Panel
• COSMIC Text Editor
• COSMIC Settings

Documentation can be found here.

Licensed under the Mozilla Public License 2.0.

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