haskell-configuration-ghc-7.8.x: various build fixes

- mtl-2.2.x needs transformers 0.4.x.
 - time-1.5.x can't build its test suite.
 - provide deep overrides for amazonka-* stuff to build with GHC 7.8.x

pkgs/development/haskell-modules/configuration-common.nix

@@ -32,6 +32,9 @@ self: super: {
   # Won't find it's header files without help.
   sfml-audio = overrideCabal super.sfml-audio (drv: { configureFlags = drv.configureFlags or [] ++ ["--extra-include-dirs=${pkgs.openal}/include/AL"]; });
 
+  # https://github.com/haskell/time/issues/23
+  time_1_5_0_1 = overrideCabal super.time_1_5_0_1 (drv: { doCheck = false; });
+
   # Hacks to make packages compile.
   abstract-deque = overrideCabal super.abstract-deque (drv: { doCheck = false; });
   accelerate-cuda = overrideCabal super.accelerate-cuda (drv: { jailbreak = true; });

pkgs/development/haskell-modules/configuration-ghc-7.8.x.nix

@@ -34,6 +34,13 @@ self: super: {
   unix = null;
   xhtml = null;
 
+  # mtl 2.2.x needs the latest transformers.
+  mtl_2_2_1 = super.mtl_2_2_1.override { transformers = self.transformers_0_4_2_0; };
+}
+
+//                              # packages related to ghcjs
+
+{
   ghcjs-prim = self.mkDerivation {
     pname = "ghcjs-prim";
     version = "0.1.0.0";
@@ -47,5 +54,22 @@ self: super: {
   };
 
   ghcjs = self.callPackage ../compilers/ghcjs { Cabal = self.Cabal_1_22_0_0; };
-
 }
+
+//                              # packages related to amazonka
+
+(let
+  amazonkaEnv = self: super: {
+    mkDerivation = drv: super.mkDerivation (drv // { doCheck = false; });
+    mtl = self.mtl_2_2_1;
+    nats = self.nats_0_2;
+    transformers = self.transformers_0_4_2_0;
+    transformers-compat = overrideCabal super.transformers-compat (drv: { configureFlags = []; });
+  };
+in
+{
+  # These packages need mtl 2.2.x to compile.
+  amazonka-core = super.amazonka-core.overrideScope amazonkaEnv;
+  amazonka = super.amazonka.overrideScope amazonkaEnv;
+  amazonka-cloudwatch = super.amazonka-cloudwatch.overrideScope amazonkaEnv;
+})

pkgs/development/haskell-modules/hackage-packages.nix

@@ -79482,6 +79482,20 @@ self: {
        license = stdenv.lib.licenses.bsd3;
      }) {};
 
+  "nats_0_2" = callPackage
+    ({ mkDerivation, base, hashable }:
+     mkDerivation {
+       pname = "nats";
+       version = "0.2";
+       sha256 = "05skqs5ahbrnwlsxjihkvmsw0n49k9mqdhrv9nqh4dmd1j622r73";
+       editedCabalFile = "e401a5253358858109c85e8f17a4b63e7dd86b59cc77ac4baa6a421b6645b439";
+       buildDepends = [ base hashable ];
+       configureFlags = [ "-fhashable" ];
+       homepage = "http://github.com/ekmett/nats/";
+       description = "Natural numbers";
+       license = stdenv.lib.licenses.bsd3;
+     }) {};
+
   "nats" = callPackage
     ({ mkDerivation, base, hashable }:
      mkDerivation {