-- We are going to lambda-abstract, so nuke any IdInfo,
-- and add the tyvars of the Id (if necessary)
zap v | isId v = WARN( workerExists (idWorkerInfo v) ||
-- We are going to lambda-abstract, so nuke any IdInfo,
-- and add the tyvars of the Id (if necessary)
zap v | isId v = WARN( workerExists (idWorkerInfo v) ||