{
  pkgs,
}:
let
  inherit (pkgs) lib;
in
{
  name,
  default_config ? true,
  extra_config ? '''',
  package ? pkgs.valkey,
  port ? 6379,
  bind ? "localhost",
  ...
}:

let

  generateValkeyConfig = ''
    cat > "$RUNTIME_PATH"/${name}.conf <<EOF
    ${lib.optionalString default_config ''
      port ${builtins.toString port}
      ${lib.optionalString (bind != null) "bind ${bind}"}
      ${lib.optionalString (port == 0) "unixsocket \"$RUNTIME_PATH/${name}.sock\""}
      ${lib.optionalString (port == 0) "unixsocketperm 700"}
    ''}
    ${extra_config}
    EOF
  '';

  script = pkgs.writeShellApplication {
    name = "run-valkey";
    text = ''
      set -euo pipefail
      VALKEYDATA="$RUNTIME_PATH"/${name}/
      ${
        if (port == 0) then
          ''
            VALKEY_UNIX_SOCKET = "$RUNTIME_PATH"/${name}.sock
            exportVALKEY_UNIX_SOCKET
            echo "Starting valkey on unix socket ''${VALKEY_UNIX_SOCKET}"
          ''
        else
          ''
            echo "Starting valkey on port ${builtins.toString port}"
          ''
      }
      export VALKEYDATA
      if [ ! -d "$VALKEYDATA" ]; then
        mkdir -p "$VALKEYDATA"
      fi
      ${generateValkeyConfig}
      ${package}/bin/valkey-server "$RUNTIME_PATH"/${name}.conf --daemonize no --dir "$VALKEYDATA"
    '';
  };
  tcpPing = "${package}/bin/valkey-cli -p ${builtins.toString port} ping";
  unixPing = "${package}/bin/valkey-cli -s \"$RUNTIME_PATH\"/${name}.sock ping";
in
{
  processes."${name}" = {
    command = "${script}/bin/run-valkey";
    readiness_probe = {
      exec.command = if port == 0 then unixPing else tcpPing;
      initial_delay_seconds = 2;
      period_seconds = 10;
      timeout_seconds = 4;
      success_threshold = 1;
      failure_threshold = 3;
    };
    availability.restart = "on_failure";
  };

}