mkIdSet, unitIdSet, minusIdSet,
unionManyIdSets, idSetToList, SYN_IE(IdSet),
nullIdEnv, growIdEnvList, lookupIdEnv, SYN_IE(IdEnv)
)
mkIdSet, unitIdSet, minusIdSet,
unionManyIdSets, idSetToList, SYN_IE(IdSet),
nullIdEnv, growIdEnvList, lookupIdEnv, SYN_IE(IdEnv)
)