{
    buildRoot = { pkgs, appDir}: pkgs.runCommand "isle-linux-root" {} ''
      mkdir -p "$out"
      cp -r ${appDir}/usr "$out"/
      chmod +w -R "$out"/usr

      mkdir -p "$out"/etc/isle
      cp "${../../go/daemon/daecommon/daemon.yml}" "$out"/etc/isle/daemon.yml

      mkdir -p "$out"/usr/lib/sysusers.d/
      cat >"$out"/usr/lib/sysusers.d/isle.conf <<EOF
      u isle - "isle Daemon"
      EOF

      mkdir -p "$out"/usr/lib/systemd/system
      cp "${./isle.service}" "$out"/usr/lib/systemd/system/isle.service
    '';
}