Exemple #1
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    def __init__(self, info_theory: TheoriesDict, packages_path=None, timing=None):
        super().__init__()
        self.set_logger("theory")

        if info_theory:
            for name, info in info_theory.items():
                info = info or {}
                # If it has an "external" key, wrap it up. Else, load it up
                if isinstance(info, Theory):
                    self.add_instance(name, info)
                elif isinstance(info.get("external"), Theory):
                    self.add_instance(name, info["external"])
                else:
                    if "external" in info:
                        theory_class = info["external"]
                        if not isinstance(theory_class, type) or \
                                not issubclass(theory_class, Theory):
                            raise LoggedError(self.log,
                                              "Theory %s is not a Theory subclass", name)
                    else:
                        theory_class = get_component_class(
                            name, kind="theory", class_name=info.get("class"),
                            logger=self.log)
                    self.add_instance(
                        name, theory_class(
                            info, packages_path=packages_path, timing=timing, name=name))
Exemple #2
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def get_default_info(component_or_class, kind=None, return_yaml=False,
                     yaml_expand_defaults=True, component_path=None,
                     input_options=empty_dict, class_name=None,
                     return_undefined_annotations=False):
    """
    Get default info for a component_or_class.
    """
    try:
        cls = get_component_class(component_or_class, kind, component_path, class_name,
                                  logger=logger)
        default_component_info = \
            cls.get_defaults(return_yaml=return_yaml,
                             yaml_expand_defaults=yaml_expand_defaults,
                             input_options=input_options)
    except ComponentNotFoundError:
        raise
    except Exception as e:
        raise LoggedError(logger,
                          "Failed to get defaults for component or class '%s' [%s]",
                          component_or_class, e)
    if return_undefined_annotations:
        annotations = {k: v for k, v in cls.get_annotations().items() if
                       k not in default_component_info}
        return default_component_info, annotations
    else:
        return default_component_info
Exemple #3
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def get_sampler_name_and_class(info_sampler: SamplersDict, logger=None):
    """
    Auxiliary function to retrieve the class of the required sampler.
    """
    check_sane_info_sampler(info_sampler)
    name = list(info_sampler)[0]
    sampler_class = get_component_class(name, kind="sampler", logger=logger)
    assert issubclass(sampler_class, Sampler)
    return name, sampler_class
Exemple #4
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    def __init__(self,
                 info_likelihood: LikesDict,
                 packages_path=None,
                 timing=None,
                 theory=None):
        super().__init__()
        self.set_logger("likelihood")
        self.theory = theory
        # Get the individual likelihood classes
        for name, info in info_likelihood.items():
            if isinstance(name, Theory):
                name, info = name.get_name(), info
            if isinstance(info, Theory):
                self.add_instance(name, info)
            elif isinstance(info, Mapping) and "external" in info:
                external = info["external"]
                if isinstance(external, Theory):
                    self.add_instance(name, external)
                elif isinstance(external, type):
                    if not is_LikelihoodInterface(external) or \
                            not issubclass(external, Theory):
                        raise LoggedError(
                            self.log, "%s: external class likelihood must "
                            "be a subclass of Theory and have "
                            "logp, current_logp attributes", external.__name__)
                    self.add_instance(
                        name,
                        external(info,
                                 packages_path=packages_path,
                                 timing=timing,
                                 standalone=False,
                                 name=name))
                else:
                    # If it has an "external" key, wrap it up. Else, load it up
                    self.add_instance(
                        name,
                        LikelihoodExternalFunction(info, name, timing=timing))
            else:
                assert isinstance(info, Mapping)
                like_class: type = get_component_class(
                    name,
                    kind="likelihood",
                    component_path=info.get("python_path", None),
                    class_name=info.get("class"),
                    logger=self.log)
                self.add_instance(
                    name,
                    like_class(info,
                               packages_path=packages_path,
                               timing=timing,
                               standalone=False,
                               name=name))

            if not is_LikelihoodInterface(self[name]):
                raise LoggedError(
                    self.log, "'Likelihood' %s is not actually a "
                    "likelihood (no current_logp attribute)", name)
def test_generic_camb(packages_path, skip_not_installed):
    like = "bao.sdss_dr12_consensus_bao"
    like_rename = "my_bao"
    chi2_generic = deepcopy(chi2_sdss_dr12_consensus_bao)
    chi2_generic[like_rename] = chi2_generic.pop(like)
    likelihood_defaults = get_component_class(like).get_defaults()
    likelihood_defaults.pop("path")
    likelihood_defaults["class"] = "bao.generic"
    info_likelihood = {like_rename: likelihood_defaults}
    info_theory = {"camb": None}
    body_of_test(packages_path, best_fit, info_likelihood, info_theory,
                 chi2_generic, skip_not_installed=skip_not_installed)
Exemple #6
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def get_bib_info(*infos, logger=None):
    """
    Gathers and returns the descriptions and bibliographic sources for the components
    mentioned in ``infos``.

    ``infos`` can be input dictionaries or single component names.
    """
    if not logger:
        logger_setup()
        logger = get_logger("bib")
    used_components, component_infos = get_used_components(*infos,
                                                           return_infos=True)
    descs: InfoDict = {}
    bibs: InfoDict = {}
    used_components = get_used_components(*infos)
    for kind, components in used_components.items():
        if kind is None:
            continue  # we will deal with bare component names later, to avoid repetition
        descs[kind], bibs[kind] = {}, {}
        for component in components:
            try:
                descs[kind][component] = get_desc_component(
                    component, kind, component_infos[component])
                bibs[kind][component] = get_bib_component(component, kind)
            except ComponentNotFoundError:
                sugg = similar_internal_class_names(component)
                logger.error(
                    f"Could not identify component '{component}'. "
                    f"Did you mean any of the following? {sugg} (mind capitalization!)"
                )
                continue
    # Deal with bare component names
    for component in used_components.get(None, []):
        try:
            cls = get_component_class(component)
        except ComponentNotFoundError:
            sugg = similar_internal_class_names(component)
            logger.error(
                f"Could not identify component '{component}'. "
                f"Did you mean any of the following? {sugg} (mind capitalization!)"
            )
            continue
        kind = cls.get_kind()
        if kind not in descs:
            descs[kind], bibs[kind] = {}, {}
        if kind in descs and component in descs[kind]:
            continue  # avoid repetition
        descs[kind][component] = get_desc_component(cls, kind)
        bibs[kind][component] = get_bib_component(cls, kind)
    descs["cobaya"] = {"cobaya": cobaya_desc}
    bibs["cobaya"] = {"cobaya": cobaya_bib}
    return descs, bibs
Exemple #7
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def get_preferred_old_values(info_old):
    """
    Returns selected values in `info_old`, which are preferred at resuming.
    """
    keep_old: InfoDict = {}
    for block_name, block in info_old.items():
        if block_name not in kinds or not block:
            continue
        for k in block:
            try:
                component_path = block[k].pop("python_path", None) \
                    if isinstance(block[k], dict) else None
                cls = get_component_class(
                    k, kind=block_name, component_path=component_path,
                    class_name=(block[k] or {}).get("class"), logger=logger)
                prefer_old_k_this = getattr(cls, "_at_resume_prefer_old", {})
                if prefer_old_k_this:
                    if block_name not in keep_old:
                        keep_old[block_name] = {}
                    keep_old[block_name].update(
                        {k: {o: block[k][o] for o in prefer_old_k_this if o in block[k]}})
            except ImportError:
                pass
    return keep_old
Exemple #8
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    def check_and_dump_info(self,
                            input_info,
                            updated_info,
                            check_compatible=True,
                            cache_old=False,
                            use_cache_old=False,
                            ignore_blocks=()):
        """
        Saves the info in the chain folder twice:
           - the input info.
           - idem, populated with the components' defaults.

        If resuming a sample, checks first that old and new infos and versions are
        consistent.
        """
        # trim known params of each likelihood: for internal use only
        self.check_lock()
        updated_info_trimmed = deepcopy_where_possible(updated_info)
        updated_info_trimmed["version"] = get_version()
        for like_info in updated_info_trimmed.get("likelihood", {}).values():
            (like_info or {}).pop("params", None)
        if check_compatible:
            # We will test the old info against the dumped+loaded new info.
            # This is because we can't actually check if python objects do change
            try:
                old_info = self.reload_updated_info(cache=cache_old,
                                                    use_cache=use_cache_old)
            except InputImportError:
                # for example, when there's a dynamically generated class that cannot
                # be found by the yaml loader (could use yaml loader that ignores them)
                old_info = None
            if old_info:
                # use consistent yaml read-in types
                # TODO: could probably just compare full infos here, with externals?
                #  for the moment cautiously keeping old behaviour
                old_info = yaml_load(yaml_dump(old_info))  # type: ignore
                new_info = yaml_load(yaml_dump(updated_info_trimmed))
                if not is_equal_info(
                        old_info,
                        new_info,
                        strict=False,
                        ignore_blocks=list(ignore_blocks) + ["output"]):
                    raise LoggedError(
                        self.log,
                        "Old and new run information not compatible! "
                        "Resuming not possible!")
                # Deal with version comparison separately:
                # - If not specified now, take the one used in resume info
                # - If specified both now and before, check new older than old one
                # (For Cobaya's own version, prefer new one always)
                old_version = old_info.get("version")
                new_version = new_info.get("version")
                if isinstance(old_version, str) and isinstance(
                        new_version, str):
                    if version.parse(old_version) > version.parse(new_version):
                        raise LoggedError(
                            self.log,
                            "You are trying to resume a run performed with a "
                            "newer version of Cobaya: %r (you are using %r). "
                            "Please, update your Cobaya installation.",
                            old_version, new_version)
                for k in set(kinds).intersection(updated_info):
                    if k in ignore_blocks or updated_info[k] is None:
                        continue
                    for c in updated_info[k]:
                        new_version = updated_info[k][c].get("version")
                        old_version = old_info[k][c].get(
                            "version")  # type: ignore
                        if new_version is None:
                            updated_info[k][c]["version"] = old_version
                            updated_info_trimmed[k][c]["version"] = old_version
                        elif old_version is not None:
                            cls = get_component_class(
                                c,
                                k,
                                class_name=updated_info[k][c].get("class"),
                                logger=self.log)
                            if cls and cls.compare_versions(
                                    old_version, new_version, equal=False):
                                raise LoggedError(
                                    self.log,
                                    "You have requested version %r for "
                                    "%s:%s, but you are trying to resume a "
                                    "run that used a newer version: %r.",
                                    new_version, k, c, old_version)
        # If resuming, we don't want to do *partial* dumps
        if ignore_blocks and self.is_resuming():
            return
        # Work on a copy of the input info, since we are updating the prefix
        # (the updated one is already a copy)
        if input_info is not None:
            input_info = deepcopy_where_possible(input_info)
        # Write the new one
        for f, info in [(self.file_input, input_info),
                        (self.file_updated, updated_info_trimmed)]:
            if info:
                for k in ignore_blocks:
                    info.pop(k, None)
                info.pop("debug", None)
                info.pop("force", None)
                info.pop("resume", None)
                # make sure the dumped output_prefix does only contain the file prefix,
                # not the folder, since it's already been placed inside it
                info["output"] = self.updated_prefix()
                with open(f, "w", encoding="utf-8") as f_out:
                    try:
                        f_out.write(yaml_dump(sort_cosmetic(info)))
                    except OutputError as e:
                        raise LoggedError(self.log, str(e))
        if updated_info_trimmed and has_non_yaml_reproducible(
                updated_info_trimmed):
            try:
                import dill
            except ImportError:
                self.mpi_info(
                    'Install "dill" to save reproducible options file.')
            else:
                import pickle
                try:
                    with open(self.dump_file_updated, 'wb') as f:
                        dill.dump(sort_cosmetic(updated_info_trimmed), f,
                                  pickle.HIGHEST_PROTOCOL)
                except pickle.PicklingError as e:
                    os.remove(self.dump_file_updated)
                    self.mpi_info('Options file cannot be pickled %s', e)
Exemple #9
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def doc_script(args=None):
    """Command line script for the documentation."""
    warn_deprecation()
    logger_setup()
    logger = get_logger("doc")
    # Parse arguments
    import argparse
    parser = argparse.ArgumentParser(
        prog="cobaya doc",
        description="Prints defaults for Cobaya's components.")
    parser.add_argument(
        "component",
        action="store",
        nargs="?",
        default="",
        metavar="component_name",
        help=("The component whose defaults are requested. "
              "Pass a component kind (sampler, theory, likelihood) to "
              "list all available (internal) ones, pass nothing to list "
              "all available (internal) components of all kinds."))
    parser.add_argument("-p",
                        "--python",
                        action="store_true",
                        default=False,
                        help="Request Python instead of YAML.")
    expand_flag, expand_flag_ishort = "expand", 1
    parser.add_argument("-" + expand_flag[expand_flag_ishort],
                        "--" + expand_flag,
                        action="store_true",
                        default=False,
                        help="Expand YAML defaults.")
    arguments = parser.parse_args(args)
    # Nothing passed: list all
    if not arguments.component:
        msg = "Available components: (some may need external code/data)"
        print(msg + "\n" + "-" * len(msg))
        for kind in kinds:
            print("%s:" % kind)
            print(_indent +
                  ("\n" +
                   _indent).join(get_available_internal_class_names(kind)))
        return
    # A kind passed (plural or singular): list all of that kind
    if arguments.component.lower() in subfolders.values():
        arguments.component = next(k for k in subfolders
                                   if arguments.component == subfolders[k])
    if arguments.component.lower() in kinds:
        print("%s:" % arguments.component.lower())
        print(_indent + ("\n" + _indent).join(
            get_available_internal_class_names(arguments.component.lower())))
        return
    # Otherwise, try to identify the component
    try:
        cls = get_component_class(arguments.component, logger=logger)
    except ComponentNotFoundError:
        suggestions = similar_internal_class_names(arguments.component)
        logger.error(
            f"Could not identify component '{arguments.component}'. "
            f"Did you mean any of the following? {suggestions} (mind capitalization!)"
        )
        return 1
    to_print = get_default_info(cls,
                                return_yaml=not arguments.python,
                                yaml_expand_defaults=arguments.expand)
    if arguments.python:
        print(pformat({cls.get_kind(): {arguments.component: to_print}}))
    else:
        print(cls.get_kind() + ":\n" + _indent + arguments.component + ":\n" +
              2 * _indent + ("\n" + 2 * _indent).join(to_print.split("\n")))
        if "!defaults" in to_print:
            print("# This file contains defaults. "
                  "To populate them, use the flag --%s (or -%s)." %
                  (expand_flag, expand_flag[expand_flag_ishort]))
Exemple #10
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def get_bib_component(component, kind):
    """Extract the bibliographic sources of a component, if defined."""
    cls = get_component_class(component, kind)
    lines = ((cls.get_bibtex() or "").lstrip("\n").rstrip("\n")
             or "# [no bibliography information found]")
    return lines + "\n"
Exemple #11
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def get_desc_component(component, kind, info=None):
    """Extract a short description of a component, if defined."""
    cls = get_component_class(component, kind)
    return cleandoc(cls.get_desc(info) or "") + "\n"
Exemple #12
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def is_equal_info(info_old, info_new, strict=True, print_not_log=False, ignore_blocks=()):
    """
    Compares two information dictionaries, and old one versus a new one, and updates the
    new one for selected values of the old one.

    Set ``strict=False`` (default: ``True``) to ignore options that would not affect
    the statistics of a posterior sample, including order of params/priors/likelihoods.
    """
    myprint: Callable
    myprint_debug: Callable
    if print_not_log:
        myprint = print
        myprint_debug = lambda x: x
    else:
        myprint = logger.info
        myprint_debug = logger.debug
    myname = inspect.stack()[0][3]
    ignorable = {"debug", "resume", "force", packages_path_input, "test", "version"}
    # MARKED FOR DEPRECATION IN v3.2
    ignorable.add("debug_file")
    # END OF DEPRECATION BLOCK
    ignore = set() if strict else ignorable
    ignore = ignore.union(ignore_blocks or [])
    if set(info for info in info_old if info_old[info] is not None) - ignore \
            != set(info for info in info_new if info_new[info] is not None) - ignore:
        myprint(myname + ": different blocks or options: %r (old) vs %r (new)" % (
            set(info_old).difference(ignore), set(info_new).difference(ignore)))
        return False
    for block_name in info_old:
        if block_name in ignore or block_name not in info_new:
            continue
        block1 = deepcopy_where_possible(info_old[block_name])
        block2 = deepcopy_where_possible(info_new[block_name])
        # First, deal with root-level options (force, output, ...)
        if not isinstance(block1, dict):
            if block1 != block2:
                myprint(myname + ": different option '%s'" % block_name)
                return False
            continue
        # Now let's do components and params
        # 1. check order (it DOES matter, but just up to 1st level)
        f = list if strict else set
        if f(block1) != f(block2):
            myprint(
                myname + ": different [%s] or different order of them: %r vs %r" % (
                    block_name, list(block1), list(block2)))
            return False
        # 2. Gather general options to be ignored
        ignore_k = set()
        if not strict:
            if block_name in ["theory", "likelihood"]:
                ignore_k.update({"input_params", "output_params"})
            elif block_name == "params":
                for param in block1:
                    # Unify notation
                    block1[param] = expand_info_param(block1[param])
                    block2[param] = expand_info_param(block2[param])
                    ignore_k.update({"latex", "renames", "ref", "proposal", "min", "max"})
                    # Fixed params, it doesn't matter if they are saved as derived
                    if "value" in block1[param]:
                        block1[param].pop("derived", None)
                    if "value" in block2[param]:
                        block2[param].pop("derived", None)
                    # Renames: order does not matter
                    block1[param]["renames"] = set(block1[param].get("renames", []))
                    block2[param]["renames"] = set(block2[param].get("renames", []))
        # 3. Now check component/parameters one-by-one
        for k in block1:
            if not strict:
                # Add component-specific options to be ignored
                if block_name in kinds:
                    ignore_k_this = ignore_k.union({"python_path"})
                    if "external" not in block1[k]:
                        try:
                            component_path = block1[k].pop("python_path", None) \
                                if isinstance(block1[k], dict) else None
                            cls = get_component_class(
                                k, kind=block_name, component_path=component_path,
                                class_name=(block1[k] or {}).get("class"), logger=logger)
                            ignore_k_this.update(set(
                                getattr(cls, "_at_resume_prefer_new", {})))
                        except ImportError:
                            pass
                    # Pop ignored and kept options
                    for j in ignore_k_this:
                        block1[k].pop(j, None)
                        block2[k].pop(j, None)
            if block1[k] != block2[k]:
                # For clarity, pop common stuff before printing
                to_pop = [j for j in block1[k] if (block1[k].get(j) == block2[k].get(j))]
                [(block1[k].pop(j, None), block2[k].pop(j, None)) for j in to_pop]
                myprint(
                    myname + ": different content of [%s:%s]" % (block_name, k) +
                    " -- (re-run with `debug: True` for more info)")
                myprint_debug("%r (old) vs %r (new)" % (block1[k], block2[k]))
                return False
    return True
Exemple #13
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def install(*infos, **kwargs):
    """
    Installs the external packages required by the components mentioned in ``infos``.

    ``infos`` can be input dictionaries or single component names.

    :param force: force re-installation of apparently installed packages (default:
       ``False``).
    :param test: just check whether components are installed  (default: ``False``).
    :param upgrade: force upgrade of obsolete components (default: ``False``).
    :param skip: keywords of components that will be skipped during installation.
    :param skip_global: skip installation of already-available Python modules (default:
       ``False``).
    :param debug: produce verbose debug output  (default: ``False``).
    :param code: set to ``False`` to skip code packages (default: ``True``).
    :param data: set to ``False`` to skip data packages (default: ``True``).
    :param no_progress_bars: no progress bars shown; use when output is saved into a text
       file (e.g. when running on a cluster) (default: ``False``).
    :param no_set_global: do not store the installation path for later runs (default:
       ``False``).
    """
    debug = kwargs.get("debug", False)
    logger = kwargs.get("logger")
    if not logger:
        logger_setup(debug=debug)
        logger = get_logger("install")
    path = kwargs.get("path")
    infos_not_single_names = [
        info for info in infos if isinstance(info, Mapping)
    ]
    if not path:
        path = resolve_packages_path(*infos_not_single_names)
    if not path:
        raise LoggedError(logger, (
            "No 'path' argument given, and none could be found in input infos "
            "(as %r), the %r env variable or the config file. "
            "Maybe specify one via a command line argument '-%s [...]'?"),
                          packages_path_input, packages_path_env,
                          packages_path_arg[0])
    # General install path for all dependencies
    general_abspath = os.path.abspath(path)
    logger.info("Installing external packages at '%s'", general_abspath)
    # Set the installation path in the global config file
    if not kwargs.get("no_set_global", False) and not kwargs.get(
            "test", False):
        write_packages_path_in_config_file(general_abspath)
        logger.info(
            "The installation path has been written into the global config file: %s",
            os.path.join(get_config_path(), packages_path_config_file))
    kwargs_install = {
        "force": kwargs.get("force", False),
        "no_progress_bars": kwargs.get("no_progress_bars")
    }
    for what in (code_path, data_path):
        kwargs_install[what] = kwargs.get(what, True)
        spath = os.path.join(general_abspath, what)
        if kwargs_install[what] and not os.path.exists(spath):
            try:
                os.makedirs(spath)
            except OSError:
                raise LoggedError(
                    logger,
                    f"Could not create the desired installation folder '{spath}'"
                )
    # To check e.g. for a version upgrade, it needs to reload the component class and
    # all relevant imported modules: the implementation of `is_installed` for each
    # class is expected to always reload external modules if passed `reload=True`
    # (should be False by default to avoid deleting objects unnecessarily).
    kwargs_is_installed = {"reload": True}
    unknown_components = []  # could not be identified
    failed_components = []  # general errors
    obsolete_components = []  # older or unknown version already installed
    skip_keywords_arg = set(kwargs.get("skip", []) or [])
    # NB: if passed with quotes as `--skip "a b"`, it's interpreted as a single key
    skip_keywords_arg = set(
        chain(*[word.split() for word in skip_keywords_arg]))
    skip_keywords_env = set(
        os.environ.get(install_skip_env, "").replace(",", " ").lower().split())
    skip_keywords = skip_keywords_arg.union(skip_keywords_env)
    # Combine all requested components and install them
    # NB: components mentioned by name may be repeated with those given in dict infos.
    #     That's OK, because the install check will skip them in the 2nd pass
    used_components, components_infos = get_used_components(*infos,
                                                            return_infos=True)
    for kind, components in used_components.items():
        for component in components:
            name_w_kind = (kind + ":" if kind else "") + component
            print()
            print(create_banner(name_w_kind,
                                symbol=_banner_symbol,
                                length=_banner_length),
                  end="")
            print()
            if _skip_helper(component.lower(), skip_keywords,
                            skip_keywords_env, logger):
                continue
            info = components_infos[component]
            if isinstance(info, str) or "external" in info:
                logger.info(
                    f"Component '{name_w_kind}' is a custom function. Nothing to do."
                )
                continue
            try:
                class_name = (info or {}).get("class")
                if class_name:
                    logger.info(
                        f"Class to be installed for this component: {class_name}"
                    )
                imported_class = get_component_class(component,
                                                     kind=kind,
                                                     component_path=info.pop(
                                                         "python_path", None),
                                                     class_name=class_name,
                                                     logger=logger)
                # Update the name if the kind was unknown
                if not kind:
                    name_w_kind = imported_class.get_kind() + ":" + component
            except ComponentNotFoundError:
                logger.error(
                    f"Component '{name_w_kind}' could not be identified. Skipping."
                )
                unknown_components += [name_w_kind]
                continue
            except Exception:
                traceback.print_exception(*sys.exc_info(), file=sys.stdout)
                logger.error(
                    f"An error occurred when loading '{name_w_kind}'. Skipping."
                )
                failed_components += [name_w_kind]
                continue
            else:
                if _skip_helper(imported_class.__name__.lower(), skip_keywords,
                                skip_keywords_env, logger):
                    continue
            is_compatible = getattr(imported_class, "is_compatible",
                                    lambda: True)()
            if not is_compatible:
                logger.error(f"Skipping '{name_w_kind}' "
                             "because it is not compatible with your OS.")
                failed_components += [name_w_kind]
                continue
            logger.info(
                "Checking if dependencies have already been installed...")
            is_installed = getattr(imported_class, "is_installed", None)
            if is_installed is None:
                logger.info(
                    f"Component '{name_w_kind}' is a fully built-in component: "
                    "nothing to do.")
                continue
            this_component_install_path = general_abspath
            get_path = getattr(imported_class, "get_path", None)
            if get_path:
                this_component_install_path = get_path(
                    this_component_install_path)
            # Check previous installations and their versions
            has_been_installed = False
            is_old_version_msg = None
            with NoLogging(None if debug else logging.ERROR):
                try:
                    if kwargs.get("skip_global"):
                        has_been_installed = is_installed(
                            path="global",
                            **kwargs_install,
                            **kwargs_is_installed)
                    if not has_been_installed:
                        has_been_installed = is_installed(
                            path=this_component_install_path,
                            **kwargs_install,
                            **kwargs_is_installed)
                except VersionCheckError as excpt:
                    is_old_version_msg = str(excpt)
            if has_been_installed:  # no VersionCheckError was raised
                logger.info(
                    "External dependencies for this component already installed."
                )
                if kwargs.get("test", False):
                    continue
                if kwargs_install["force"] and not kwargs.get("skip_global"):
                    logger.info("Forcing re-installation, as requested.")
                else:
                    logger.info("Doing nothing.")
                    continue
            elif is_old_version_msg:
                logger.info(f"Version check failed: {is_old_version_msg}")
                obsolete_components += [name_w_kind]
                if kwargs.get("test", False):
                    continue
                if not kwargs.get("upgrade", False) and not kwargs.get(
                        "force", False):
                    logger.info("Skipping because '--upgrade' not requested.")
                    continue
            else:
                logger.info("Check found no existing installation")
                if not debug:
                    logger.info(
                        "(If you expected this to be already installed, re-run "
                        "`cobaya-install` with --debug to get more verbose output.)"
                    )
                if kwargs.get("test", False):
                    # We are only testing whether it was installed, so consider it failed
                    failed_components += [name_w_kind]
                    continue
            # Do the install
            logger.info("Installing...")
            try:
                install_this = getattr(imported_class, "install", None)
                success = install_this(path=general_abspath, **kwargs_install)
            except Exception:
                traceback.print_exception(*sys.exc_info(), file=sys.stdout)
                logger.error(
                    "An unknown error occurred. Delete the external packages "
                    "folder %r and try again. "
                    "Please, notify the developers if this error persists.",
                    general_abspath)
                success = False
            if success:
                logger.info("Successfully installed! Let's check it...")
            else:
                logger.error(
                    "Installation failed! Look at the error messages above. "
                    "Solve them and try again, or, if you are unable to solve them, "
                    "install the packages required by this component manually."
                )
                failed_components += [name_w_kind]
                continue
            # Test installation
            reloaded_class = get_component_class(component,
                                                 kind=kind,
                                                 component_path=info.pop(
                                                     "python_path", None),
                                                 class_name=class_name,
                                                 logger=logger)
            reloaded_is_installed = getattr(reloaded_class, "is_installed",
                                            None)
            with NoLogging(None if debug else logging.ERROR):
                try:
                    successfully_installed = reloaded_is_installed(
                        path=this_component_install_path,
                        **kwargs_install,
                        **kwargs_is_installed)
                except Exception:
                    traceback.print_exception(*sys.exc_info(), file=sys.stdout)
                    successfully_installed = False
            if not successfully_installed:
                logger.error(
                    "Installation apparently worked, "
                    "but the subsequent installation test failed! "
                    "This does not always mean that there was an actual error, "
                    "and is sometimes fixed simply by running the installer "
                    "again. If not, look closely at the error messages above, "
                    "or re-run with --debug for more more verbose output. "
                    "If you are unable to fix the issues above, "
                    "try installing the packages required by this "
                    "component manually.")
                failed_components += [name_w_kind]
            else:
                logger.info("Installation check successful.")
    print()
    print(create_banner(" * Summary * ",
                        symbol=_banner_symbol,
                        length=_banner_length),
          end="")
    print()
    bullet = "\n - "
    if unknown_components:
        suggestions_dict = {
            name: similar_internal_class_names(name)
            for name in unknown_components
        }
        suggestions_msg = \
            bullet + bullet.join(
                f"{name}: did you mean any of the following? {sugg} "
                "(mind capitalization!)" for name, sugg in suggestions_dict.items())
        raise LoggedError(logger, (
            "The following components could not be identified and were skipped:"
            f"{suggestions_msg}"))
    if failed_components:
        raise LoggedError(logger, (
            "The installation (or installation test) of some component(s) has "
            "failed: %s\nCheck output of the installer of each component above "
            "for precise error info.\n"),
                          bullet + bullet.join(failed_components))
    if obsolete_components:
        raise LoggedError(logger, (
            "The following packages are obsolete. Re-run with `--upgrade` option"
            " (not upgrading by default to preserve possible user changes): %s"
        ), bullet + bullet.join(obsolete_components))
    if not unknown_components and not failed_components and not obsolete_components:
        logger.info(
            "All requested components' dependencies correctly installed at "
            f"{general_abspath}")