haskell-bmp: update to version 1.2.5.1

GHC versions prior to 7.6.x cannot compile this version, so override the 'bmp'
attribute for those compilers to version 1.2.2.1 in haskell-defaults.nix.

pkgs/development/libraries/haskell/bmp/1.2.5.1.nix

@@ -0,0 +1,15 @@
+{ cabal, binary }:
+
+cabal.mkDerivation (self: {
+  pname = "bmp";
+  version = "1.2.5.1";
+  sha256 = "1q1g5p7kan9hqb4s50fz989c4p8vmfrs7qvwiqx9bcic8k7jqld4";
+  buildDepends = [ binary ];
+  meta = {
+    homepage = "http://code.ouroborus.net/bmp";
+    description = "Read and write uncompressed BMP image files";
+    license = self.stdenv.lib.licenses.mit;
+    platforms = self.ghc.meta.platforms;
+    maintainers = [ self.stdenv.lib.maintainers.andres ];
+  };
+})