Re: Announce: Haskell Platform 2012.4.0.0

On 07/11/2012 22:33, Johan Tibell wrote:

On Wed, Nov 7, 2012 at 2:09 PM, Matthias Kilian mailto:kili@outback.escape.de> wrote:

Small safety hint for distributors: the haskell-platform.cabal file mandates network == 2.3.1.0 and HTTP == 4000.2.5, but the latter by default depends on network >= 2.4 && < 2.5. So if you want to avoid to include the same package in different versions (which at least OpenBSD does), you'll have to configure HTTP with -fnetwork23 (which changes the dependency to network < 2.4).

I think HTTP can solve this in a better way, instead of using

#ifdef NETWORK23 uriDefaultTo a b = maybe a id (a `relativeTo` b) #else uriDefaultTo a b = a `relativeTo` b #endif

it could use

#ifdef MIN_VERSION_network(2,4,0) uriDefaultTo a b = a `relativeTo` b #else uriDefaultTo a b = maybe a id (a `relativeTo` b) #endif

That way it will compile on both old and new network versions without any user interventions (including cabal flag).

This has already been changed in the most recent HTTP version, but that's not in the platform. Ganesh