def METHOD_NAME(scylla_backend_version_name, distro):
    with open("defaults/manager_versions.yaml", encoding="utf-8") as mgmt_config:
        scylla_backend_repos_by_version_dict = yaml.safe_load(mgmt_config)["scylla_backend_repo_by_version"]
    version_specific_repos = scylla_backend_repos_by_version_dict.get(scylla_backend_version_name, None)
    assert version_specific_repos, f"Couldn't find scylla version {scylla_backend_version_name} in manager defaults"
    distro_name = get_distro_name(distro)
    backend_repo_address = version_specific_repos.get(distro_name, None)
    assert backend_repo_address, f"Could not find manager scylla backend repo for {distro}"
    return backend_repo_address