{
  self,
  pkgs,
  stdenv,
  lib,
  writers,
  writeScriptBin,
  nodejs,
  fetchurl,
  model ? null,
  serverUrl ? "",
  local ? true,
  ...
}:
writeScriptBin "conmorfeusz" ''
  #!/${nodejs}/bin/node
  // Passed from Nix derivation config
  const MORFEUSZ_ANALYSER_BIN="${self.packages.${stdenv.hostPlatform.system}.morfeusz}/bin/morfeusz_analyzer";
  const MORFEUSZ_GENERATOR_BIN="${self.packages.${stdenv.hostPlatform.system}.morfeusz}/bin/morfeusz_generator";
  const CONCRAFT_BIN="${self.packages.${stdenv.hostPlatform.system}.concraft-pl}/bin/concraft-pl";
  const CONCRAFT_MODEL="${
    if model != null
    then model
    else pkgs.callPackage ./concraft-sgjp-model.nix {}
  }";
  const CONCRAFT_SERVER_URL="${serverUrl}";
  const CONCRAFT_MODE="${
    if local
    then "local"
    else "remote"
  }";
  // =================================

  ${builtins.readFile ./index.js}
''