protected function addThemeRepositoryToRootComposer()
    {
        $composer = json_decode(file_get_contents(base_path('composer.json')), true);

        $composer['repositories'][] = [
            'type' => 'path',
            'url' => './'.$this->relativeThemePath(),
        ];

        file_put_contents(
            base_path('composer.json'),
            json_encode($composer, JSON_PRETTY_PRINT | JSON_UNESCAPED_SLASHES)
        );
    }