Proposal [Trac #1212]: add IPv6 support to network library

Ian Lynagh igloo at
Thu Mar 29 14:11:46 EDT 2007

On Sat, Mar 24, 2007 at 12:52:50PM -0700, Bryan O'Sullivan wrote:
> It turns out there's a hitch with this notion.  The HostName and 
> ServiceName types are defined in Network.BSD, but they're desirable to 
> use in the type signature of getAddrInfo.
> While it's possible to move these types into a hidden module such that 
> they're re-exported by Network.BSD and Network.Socket, this has the 
> nasty consequence of breaking pre-existing network code due to 
> Network.Socket now exporting these types, causing the Haskell compiler 
> to complain about the new ambiguities introduced.

You shouldn't get ambiguity problems if you're importing the same thing
from multiple modules, only if you import different things with the same

I might have misunderstood what you mean, though.


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