code: def get_fastq_dir(fc_dir):
      
      full_goat_bc = glob.glob(os.path.join(fc_dir, "Data", "*Firecrest*", "Bustard*"))
      bustard_bc = glob.glob(os.path.join(fc_dir, "Data", "Intensities", "*Bustard*"))
      machine_bc = os.path.join(fc_dir, "Data", "Intensities", "BaseCalls")
      if os.path.exists(machine_bc):
          return os.path.join(machine_bc, "fastq")
      elif len(full_goat_bc) > 0:
          return os.path.join(full_goat_bc[0], "fastq")
      elif len(bustard_bc) > 0:
          return os.path.join(bustard_bc[0], "fastq")
      # otherwise assume we are in the fastq directory
      # XXX What other cases can we end up with here?
      else:
          return fc_dir
docs: Retrieve the fastq directory within Solexa flowcell output.