# Buggy code
def genrepo(saltenv="base"):
    """
    Generate winrepo_cachefile based on sls files in the winrepo

    CLI Example:

    .. code-block:: bash

        salt-run winrepo.genrepo
    """
    ret = {}
    repo = _get_local_repo_dir(saltenv)
    if not os.path.exists(repo):
        os.makedirs(repo)
    winrepo = "winrepo.p"
    renderers = salt.loader.render(__opts__, __salt__)
    for root, _, files in os.walk(repo):
        for name in files:
            if name.endswith(".sls"):
                try:
                    config = salt.template.compile_template(
                        os.path.join(root, name), renderers, __opts__["renderer"]
                    )
                except SaltRenderError as exc:
                    log.debug("Failed to compile {0}.".format(os.path.join(root, name)))
                    log.debug("Error: {0}.".format(exc))
                    continue

                if config:
                    revmap = {}
                    for pkgname, versions in six.iteritems(config):
                        for version, repodata in six.iteritems(versions):
                            if not isinstance(version, six.string_types):
                                config[pkgname][str(version)] = config[pkgname].pop(
                                    version
                                )
                            if not isinstance(repodata, dict):
                                log.debug(
                                    "Failed to compile{0}.".format(
                                        os.path.join(root, name)
                                    )
                                )
                                continue
                            revmap[repodata["full_name"]] = pkgname
                    ret.setdefault("repo", {}).update(config)
                    ret.setdefault("name_map", {}).update(revmap)
    with salt.utils.fopen(os.path.join(repo, winrepo), "w+b") as repo_cache:
        repo_cache.write(msgpack.dumps(ret))
    return ret


# Traceback (CommandExecutionError)
----------
ID: openvpn
Function: pkg.installed
Result: False
Comment: An exception occurred in this state: Traceback (most recent call last):
File "C:\salt\bin\lib\site-packages\salt\state.py", line 1626, in call
**cdata['kwargs'])
File "C:\salt\bin\lib\site-packages\salt\loader.py", line 1492, in wrapper
return f(*args, **kwargs)
File "c:\salt\var\cache\salt\minion\extmods\states\pkg.py", line 984, in installed
**kwargs)
File "c:\salt\var\cache\salt\minion\extmods\states\pkg.py", line 294, in _find_install_targets
cur_pkgs = __salt__['pkg.list_pkgs'](versions_as_list=True, **kwargs)
File "c:\salt\var\cache\salt\minion\extmods\modules\win_pkg.py", line 244, in list_pkgs
name_map = _get_name_map()
File "c:\salt\var\cache\salt\minion\extmods\modules\win_pkg.py", line 1067, in _get_name_map
name_map = get_repo_data().get('name_map', {})
File "c:\salt\var\cache\salt\minion\extmods\modules\win_pkg.py", line 1050, in get_repo_data
'Windows repo cache doesn\'t exist, pkg.refresh_db likely '
CommandExecutionError: Windows repo cache doesn't exist, pkg.refresh_db likely needed

# Fixed code
def genrepo(saltenv="base"):
    """
    Generate winrepo_cachefile based on sls files in the winrepo

    CLI Example:

    .. code-block:: bash

        salt-run winrepo.genrepo
    """
    ret = {}
    repo = _get_local_repo_dir(saltenv)
    if not os.path.exists(repo):
        os.makedirs(repo)
    winrepo = "winrepo.p"
    renderers = salt.loader.render(__opts__, __salt__)
    for root, _, files in os.walk(repo):
        for name in files:
            if name.endswith(".sls"):
                try:
                    config = salt.template.compile_template(
                        os.path.join(root, name), renderers, __opts__["renderer"]
                    )
                except SaltRenderError as exc:
                    log.debug("Failed to compile {0}.".format(os.path.join(root, name)))
                    log.debug("Error: {0}.".format(exc))
                    continue

                if config:
                    revmap = {}
                    for pkgname, versions in six.iteritems(config):
                        for version, repodata in six.iteritems(versions):
                            if not isinstance(version, six.string_types):
                                config[pkgname][str(version)] = config[pkgname].pop(
                                    version
                                )
                            if not isinstance(repodata, dict):
                                log.debug(
                                    "Failed to compile {0}.".format(
                                        os.path.join(root, name)
                                    )
                                )
                                continue
                            revmap[repodata["full_name"]] = pkgname
                    ret.setdefault("repo", {}).update(config)
                    ret.setdefault("name_map", {}).update(revmap)
    with salt.utils.fopen(os.path.join(repo, winrepo), "w+b") as repo_cache:
        repo_cache.write(msgpack.dumps(ret))
    return ret