code: def use_bcbio_variation_recall(algs):
      
      for alg in algs:
          jointcaller = alg.get("jointcaller", [])
          if not isinstance(jointcaller, (tuple, list)):
              jointcaller = [jointcaller]
          for caller in jointcaller:
              if caller not in set(["gatk-haplotype-joint", None, False]):
                  return True
      return False
docs: Processing uses bcbio-variation-recall. Avoids core requirement if not used.