def get_tracer_classes():
    """A helper which returns a list of all available Tracers

    The order should not but does matter and ATM is magically provided
    """
    from reproman.distributions.debian import DebTracer
    from reproman.distributions.redhat import RPMTracer
    from reproman.distributions.conda import CondaTracer
    from reproman.distributions.venv import VenvTracer
    from reproman.distributions.vcs import VCSTracer
    from reproman.distributions.docker import DockerTracer
    from reproman.distributions.singularity import SingularityTracer
    Tracers = [DebTracer, RPMTracer, CondaTracer, VenvTracer, VCSTracer,
        DockerTracer, SingularityTracer]
    return Tracers
