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    Buildroot

    The tool Home Assistant OS is built with. It builds a complete, small Linux system from source, instead of starting from a distribution like Ubuntu.

    In code
    buildroot/buildroot-external/

    The home-assistant/operating-system repository has Buildroot as a Git submodule, and keeps everything specific to Home Assistant OS, like the board configurations and packages, in buildroot-external/. See Build Home Assistant OS.

    Related terms

    • Home Assistant OSThe operating system made to run Home Assistant, with the Supervisor, apps, and backups. The recommended way to install Home Assistant.
    • RAUCThe update system of Home Assistant OS. It installs a new version of the whole system next to the running one, so a device can go back when an update does not work.