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Solve the following problem using Python, implementing the functions described below, one line at a time
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Description:
 def inspect_config(app):
 """Inspect the Sphinx configuration and update for slide-linking. If links from HTML to slides are enabled, make sure the sidebar configuration includes the template and add the necessary theme directory as a loader so the sidebar template can be located. If the sidebar configuration already includes ``slidelink.html`` (in any key), the configuration will not be changed. If the configuration is not specified, we'll attempt to emulate what Sphinx does by default. """


    # avoid import cycles :/
    from hieroglyph import writer

    # only reconfigure Sphinx if we're generating HTML
    if app.builder.name not in HTML_BUILDERS:
        return

    if app.config.slide_link_html_to_slides:

        # add the slide theme dir as a Loader
        app.builder.templates.loaders.append(
            SphinxFileSystemLoader(
                os.path.join(
                    os.path.dirname(__file__), 'themes', 'slides',
                )
            )
        )

        # add the "show slides" sidebar template
        if not app.config.html_sidebars:
            # no sidebars explicitly defined, mimic the old style
            # behavior + slide links
            app.config.html_sidebars = {
                '**': [
                    'localtoc.html',
                    'relations.html',
                    'sourcelink.html',
                    SLIDELINK_TEMPLATE,
                    'searchbox.html',
                ],
            }
        else:
            # sidebars defined, add the template if needed
            included = False
            for glob, templates in app.config.html_sidebars:
                if SLIDELINK_TEMPLATE in templates:
                    included = True
                    break

            if not included:
                # the slidelink template was not included; append it
                # to the list of sidebars for all templates
                app.config.html_sidebars.setdefault('**', []).append(
                    SLIDELINK_TEMPLATE,
                )

    if app.config.slide_link_html_sections_to_slides:
        # fix up the HTML Translator
        if sphinx.version_info >= (1, 6, 0):
            override_translator = type(
                'SlideLinkTranslator',
                (app.builder.get_translator_class(), object),
                {
                    'depart_title': writer.depart_title,
                },
            )
            app.set_translator(app.builder, override_translator)
        else:
            app.builder.translator_class = type(
                'SlideLinkTranslator',
                (app.builder.translator_class, object),
                {
                    'depart_title': writer.depart_title,
                },
            )