RE: Socket module does not export Socket (datatype) !

I'm writing a program which does import Socket but not import SocketPrim GHC complains that the type constructor Socket isn't in scope. Indeed, in Socket.lhs from GHC 4.04.19990916 I see that Socket isn't exported, even though a function listenOn :: PortID - IO Socket is. When I say

Socket module does not export Socket (datatype) !

I'm writing a program which does import Socket but not import SocketPrim GHC complains that the type constructor Socket isn't in scope. Indeed, in Socket.lhs from GHC 4.04.19990916 I see that Socket isn't exported, even though a function listenOn :: PortID - IO Socket is. When I say import