def change_roots(self, *names):
        """Change the install directories pointed by name using root."""
        for name in names:
            attr = "install_" + name
            setattr(self, attr, change_root(self.root, getattr(self, attr)))
Change the install directories pointed by name using root.
product/gradle-plugin/src/main/python/setuptools/_distutils/command/install.py