def _insert_single_package_eups_version(c, eups_version):
    """Insert version information into the configuration namespace.

    Parameters
    ----------
    eups_version
        The EUPS version string (as opposed to tag). This comes from the
        ``__version__`` attribute of individual modules and is only set for
        single package documentation builds that use the
        `build_package_configs` configuration entrypoint.

    Notes
    -----
    The variables are:

    ``release_eups_tag``
        Always ``current``.
    ``version``, ``release``
        Equal to ``eups_version``.
    ``release_git_ref``
        Always ``master``.
    ``scipipe_conda_ref``
        Always ``master``.
    ``newinstall_ref``
        Always ``master``.
    ``pipelines_demo_ref``
        Always ``master``.
    """
    c["release_eups_tag"] = "current"
    c["release_git_ref"] = "master"
    c["version"] = eups_version
    c["release"] = eups_version
    c["scipipe_conda_ref"] = "master"
    c["pipelines_demo_ref"] = "master"
    c["newinstall_ref"] = "master"
    return c