GNOME OS 887659
GNOME OS is an experimental, immutable Linux distribution that ships the latest in-development GNOME desktop, core applications and stack. It serves as a reference for developers and testers. It is designed around the modern systemd and GNU-based userland built from the Freedesktop SDK. Initially, GNOME OS used a library and set of utilities called OSTree to deploy the root filesystem and manage updates, but later migrated to 'systemd-sysupdate' which offers enhanced immutability, auto-updating, adaptability, factory reset, uniformity and other modernised security properties. GNOME OS can be loaded as a live image in Boxes, VirtualBox, QEMU and other virtualisation software, but it can also be installed on a standard x86_64 hardware. The distribution does not support traditional package management; however, additional software applications can be installed via the Flatpak utility which is supported out of the box.
https://distrowatch.com/gnomeos