code: def _update_conda_devel():
      
      conda_bin = _get_conda_bin()
      channels = _get_conda_channels(conda_bin)
      assert conda_bin, "Could not find anaconda distribution for upgrading bcbio"
      subprocess.check_call([conda_bin, "install", "--quiet", "--yes"] + channels +
                             ["bcbio-nextgen>=%s" % version.__version__.replace("a0", "a")])
      return os.path.dirname(os.path.dirname(conda_bin))
docs: Update to the latest development conda package.