* Revert both r30278 (cmake upgrade) and r30307 (zlib fix to get cmake

to build).  These are more appropriate to the stdenv branch.  I'll
  apply them there.

svn path=/nixpkgs/trunk/; revision=30308

pkgs/development/tools/build-managers/cmake/default.nix

@@ -7,7 +7,7 @@ with stdenv.lib;
 let
   os = stdenv.lib.optionalString;
   majorVersion = "2.8";
-  minorVersion = "6";
+  minorVersion = "4";
   version = "${majorVersion}.${minorVersion}";
 in
 
@@ -18,7 +18,7 @@ stdenv.mkDerivation rec {
 
   src = fetchurl {
     url = "${meta.homepage}files/v${majorVersion}/cmake-${version}.tar.gz";
-    sha256 = "13kjfpgsrsygz693bzaf2pf9avzr1r56r6znn3zqaz9nmj0rp6g6";
+    sha256 = "1k2kjaj3vfifb329ff7fr4hcbpbaqb66l97pshq70h7m0zwajznr";
   };
 
   patches =