Announce: Haskell Platform 2012.4.0.0

[Johan Tibell]

On Wed, Nov 7, 2012 at 2:09 PM, Matthias Kilian <kili at 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).

-- Johan
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