code: def install_from_upstream(self):
          
          from burlap.system import get_arch, distrib_family
          r = self.local_renderer
          content = urlopen(r.env.download_url).read()
          print(len(content))
          matches = DOWNLOAD_LINK_PATTERN.findall(content)
          print(matches)
          arch = get_arch() # e.g. 'x86_64'
          family = distrib_family()
          if family == DEBIAN:
              ext = '.deb'
              matches = [match for match in matches if match.endswith(ext) and arch in match]
              print('matches:', matches)
              assert matches, "No matches found."
              assert len(matches) == 1, "Too many matches found: %s" % (', '.join(matches))
              r.env.final_download_url = matches[0]
              r.env.local_filename = '/tmp/vagrant%s' % ext
              r.run('wget -O {local_filename} {final_download_url}')
              r.sudo('dpkg -i {local_filename}')
          else:
              raise NotImplementedError('Unsupported family: %s' % family)
docs: Installs Vagrant from the most recent package available from their homepage.