Halley

Halley is a spatial Wayland compositor built for multi-monitor desktops. Each display has an independent infinite Field: a camera over freely overlapping windows, collapsed node landmarks, and clusters assembled around the work you actually want to keep together. Windows can decay when they leave your active area, return through history-aware navigation, or remain pinned as durable landmarks.

Halley 0.6 is a ground-up compositor rewrite. It keeps the Field, nodes, clusters, decay, Trail, Bearings, Apogee, Lift, and native capture experience, but rebuilds their foundations around Smithay's GLES renderer, damage-aware presentation, native embedded XWayland, and a typed public API.