old_contents: import msl.package_manager as pm
  
  
  def test_pypi():
      pkgs = pm.pypi()
      assert len(pkgs) == 3
      assert pm._PKG_NAME in pkgs
      assert 'msl-loadlib' in pkgs
      assert 'msl-network' in pkgs
  
new_contents: import msl.package_manager as pm
  
  
  def test_pypi():
      pkgs = pm.pypi()
      assert len(pkgs) == 4
      assert pm._PKG_NAME in pkgs
      assert 'msl-loadlib' in pkgs
      assert 'msl-network' in pkgs
      assert 'GTC' in pkgs
  
subject: update test_pypi() to include GTC