From ArchWiki

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.

Until the independent COSMIC environment is finished, Pop!_OS still uses its legacy COSMIC desktop, which is a heavily customized GNOME.



COSMIC's first release is called Epoch, and can be installed via cosmic-session-gitAUR main package. It will depend on all of the component packages, which will each build their respective components of COSMIC. The easiest is to start it through a display manager, where it will show up as an additional option, besides e.g. GNOME, KDE Plasma, etc.

Individual components

COSMIC comprises a compositor, library, and applets, which may be installed as parts. As of 2024-03, pop-icon-theme-gitAUR, pop-launcher-gitAUR, cosmic-comp-gitAUR, cosmic-applets-gitAUR, cosmic-applibrary-gitAUR, cosmic-bg-gitAUR, cosmic-settings-gitAUR cosmic-term-gitAUR, and the editor, cosmic-edit-gitAUR.

See also