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

        init.services.mautrix-signal = {
          enabled = true;
          shutdownOnExit = true;
          script = 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 ${./mautrix-signal.yaml} "$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 = 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
          '';
        };
      };
  };
}