def resolve_egg_link(path):
    """
    Given a path to an .egg-link, resolve distributions
    present in the referenced path.
    """
    referenced_paths = non_empty_lines(path)
    resolved_paths = (
        os.path.join(os.path.dirname(path), ref)
        for ref in referenced_paths
    )
    dist_groups = map(find_distributions, resolved_paths)
    return next(dist_groups, ())

    Given a path to an .egg-link, resolve distributions
    present in the referenced path.
    
src/pkg_resources/__init__.py