opt_detaggable :: Field OptInfo Bool
opt_detaggable = Field detaggable (\v opt -> opt{ detaggable = v })
opt_detaggable :: Field OptInfo Bool
opt_detaggable = Field detaggable (\v opt -> opt{ detaggable = v })
opt_detaggable = Field detaggable (\v opt -> opt{ detaggable = v })