docs: def bundle_stylesheets(context: Context):
      """
      Compiles stylesheets
      """
      args = [
          '--output', context.app.scss_build_path,
          '--output-style', 'compressed',
      ]
      if context.verbosity == 0:
          args.append('--quiet')
      if not context.use_colour:
          args.append('--no-color')
      for path in context.app.scss_include_paths:
          args.append('--include-path')
          args.append(path)
      return_code = 0
      for source_file in context.app.scss_source_file_set.paths_for_shell(separator=None):
          return_code = context.node_tool('node-sass', *args + [source_file]) or return_code
      return return_code