Will not install to the user site because it will lack sys.path precedence to (param1) in (param1)

Raise code

isfied_by = None
            if use_user_site:
                if dist_in_usersite(existing_dist):
                    self.should_reinstall = True
                elif running_under_virtualenv() and dist_in_site_packages(
                    existing_dist
                ):
                    raise InstallationError(
                        "Will not install to the user site because it will "
                        "lack sys.path precedence to {} in {}".format(
                            existing_dist.project_name, existing_dist.location
                        )
                    )
            else:
                self.should_reinstall = True
        else: