new_contents: import tarfile
  
  from . import *
  
  
  class Test9k(IntegrationTest):
      def __init__(self, *args, **kwargs):
          IntegrationTest.__init__(
              self, os.path.join(examples_dir, '01_executable'), configure=False,
              *args, **kwargs
          )
  
      def test_build(self):
          os.chdir(self.srcdir)
          cleandir(self.builddir)
          self.assertPopen(
              ['9k', '--debug', self.builddir, '--backend', self.backend]
          )
          os.chdir(self.builddir)
  
          self.build(executable('simple'))
          self.assertOutput([executable('simple')], 'hello, world!\n')
  
subject: Add an integration test for the `9k` shorthand