code: def install_program(self, extra_args):
          
          pip = Command(path.join(self.env, 'bin', 'pip'))
          args = ['install', self.raw_name,
                  '--install-option', '--install-scripts={}'
                  .format(self.env_bin)] + list(extra_args)
          print_pretty("<BOLD>pip {}<END>\n".format(' '.join(args)))
          pip(args, _out=sys.stdout, _err=sys.stderr)
          print('')
docs: Install the app to the virtualenv