{ nglib, nixpkgs }:
nglib.makeSystem {
  system = "x86_64-linux";
  name = "mautrix-signal";
  inherit nixpkgs;
  config = ({ pkgs, ... }:
    {
      dumb-init = {
        enable = true;
        type.services = { };
      };

      init.services.mautrix-signal = {
        enabled = true;
        shutdownOnExit = true;
        script =
          let
            config = ./mautrix-signal.yaml;
            inherit (pkgs) lib;
          in
          pkgs.writeShellScript "mautrix-signal"
            ''
              DATA_DIR="/var/lib/mautrix-signal"
              CONFIG_FILE="$DATA_DIR/config.yaml"
              REGISTRATION_FILE="/var/lib/registrations/mautrix-signal.yaml"
              DB_FILE="$DATA_DIR/sqlite.db"

              cp ${config} "$CONFIG_FILE" ; chmod 755 "$CONFIG_FILE"

              [ -e "$REGISTRATION_FILE" ] || \
                ${lib.getExe pkgs.mautrix-signal} -c "$CONFIG_FILE" -r "$REGISTRATION_FILE" -g
              ${lib.getExe pkgs.mautrix-signal} -c "$CONFIG_FILE" -r "$REGISTRATION_FILE" -n
            '';
      };

      init.services.signald = {
        enabled = true;
        shutdownOnExit = true;
        script =
          let
            inherit (pkgs) lib;
          in
            pkgs.writeShellScript "signald"
              ''
                DATA_DIR="/var/lib/signald"
                SOCKET_PATH="/var/run/signald/signald.sock"
                mkdir -p $(dirname $SOCKET_PATH)

                export LANG=en_US.UTF-8
                ${lib.getExe pkgs.signald} -d $DATA_DIR -s $SOCKET_PATH
              '';
      };
    });
}