svoid packageProgram(S outJarName, S programID, O... _) {
  packageProgram(javaxArtifactsDir(assertNempty(outJarName)), programID, _);
}

svoid packageProgram(File outJar, S programID, O... _) {
  ProgramPackager p = new (outJar, programID);
  optPar Cl<S> excludeSnippets;
  p.excludeSnippets = excludeSnippets != null ? asSet(excludeSnippets)
    : programPackager_standardExcludedSnippets();
  p.go();
  exitIfMain();
}