module

The module directive defines the set of Environment Modules required by each task, if supported by your compute environment. For example:

process blast {
    module 'ncbi-blast/2.2.27'

    script:
    """
    blastp -query <etc..>
    """
}

Multiple modules can be specified using the : separator:

process blast {
    module 'ncbi-blast/2.2.27:t_coffee/10.0:clustalw/2.1'

    script:
    """
    blastp -query <etc..>
  """
}