diff --git a/pkgs/development/libraries/gmp/5.1.x.nix b/pkgs/development/libraries/gmp/5.1.x.nix
index 5e1282c1d505..0df1a4f8cd83 100644
--- a/pkgs/development/libraries/gmp/5.1.x.nix
+++ b/pkgs/development/libraries/gmp/5.1.x.nix
@@ -1,8 +1,8 @@
-{ stdenv, fetchurl, m4, cxx ? true, withStatic ? false }:
+{ stdenv, fetchurl, m4, cxx ? true, withStatic ? true }:
 
 with { inherit (stdenv.lib) optional; };
 
-stdenv.mkDerivation (rec {
+stdenv.mkDerivation rec {
   name = "gmp-5.1.3";
 
   src = fetchurl { # we need to use bz2, others aren't in bootstrapping stdenv
@@ -30,6 +30,8 @@ stdenv.mkDerivation (rec {
 
   doCheck = true;
 
+  dontDisableStatic = withStatic;
+
   enableParallelBuilding = true;
 
   meta = with stdenv.lib; {
@@ -63,6 +65,3 @@ stdenv.mkDerivation (rec {
     maintainers = [ maintainers.simons ];
   };
 }
-  // stdenv.lib.optionalAttrs withStatic { dontDisableStatic = true; }
-)
-
diff --git a/pkgs/top-level/all-packages.nix b/pkgs/top-level/all-packages.nix
index 299cd0afd44b..c0cec16ca049 100644
--- a/pkgs/top-level/all-packages.nix
+++ b/pkgs/top-level/all-packages.nix
@@ -3494,7 +3494,7 @@ let
 
   # Import Haskell infrastructure.
 
-  haskell = let pkgs_       = pkgs // { gmp = gmp.override { withStatic = true; }; };
+  haskell = let pkgs_       = pkgs // { /* add necessary overrides here */ };
                 callPackage = newScope pkgs_;
                 newScope    = extra: lib.callPackageWith (pkgs_ // pkgs_.xorg // extra);
             in callPackage ./haskell-defaults.nix { pkgs = pkgs_; inherit callPackage newScope; };
diff --git a/pkgs/top-level/haskell-ng.nix b/pkgs/top-level/haskell-ng.nix
index 2e0d61f18733..6a55023d3589 100644
--- a/pkgs/top-level/haskell-ng.nix
+++ b/pkgs/top-level/haskell-ng.nix
@@ -14,24 +14,24 @@ rec {
       libiconv = pkgs.darwin.libiconv;
     });
 
-    ghc6104 = callPackage ../development/compilers/ghc/6.10.4.nix { ghc = compiler.ghc6102Binary; gmp = pkgs.gmp.override { withStatic = true; }; };
-    ghc6123 = callPackage ../development/compilers/ghc/6.12.3.nix { ghc = compiler.ghc6102Binary; gmp = pkgs.gmp.override { withStatic = true; }; };
-    ghc704 = callPackage ../development/compilers/ghc/7.0.4.nix ({ ghc = compiler.ghc704Binary; gmp = pkgs.gmp.override { withStatic = true; }; } // stdenv.lib.optionalAttrs stdenv.isDarwin {
+    ghc6104 = callPackage ../development/compilers/ghc/6.10.4.nix { ghc = compiler.ghc6102Binary; };
+    ghc6123 = callPackage ../development/compilers/ghc/6.12.3.nix { ghc = compiler.ghc6102Binary; };
+    ghc704 = callPackage ../development/compilers/ghc/7.0.4.nix ({ ghc = compiler.ghc704Binary; } // stdenv.lib.optionalAttrs stdenv.isDarwin {
       libiconv = pkgs.darwin.libiconv;
     });
-    ghc722 = callPackage ../development/compilers/ghc/7.2.2.nix ({ ghc = compiler.ghc704Binary; gmp = pkgs.gmp.override { withStatic = true; }; } // stdenv.lib.optionalAttrs stdenv.isDarwin {
+    ghc722 = callPackage ../development/compilers/ghc/7.2.2.nix ({ ghc = compiler.ghc704Binary; } // stdenv.lib.optionalAttrs stdenv.isDarwin {
       libiconv = pkgs.darwin.libiconv;
     });
-    ghc742 = callPackage ../development/compilers/ghc/7.4.2.nix ({ ghc = compiler.ghc704Binary; gmp = pkgs.gmp.override { withStatic = true; }; } // stdenv.lib.optionalAttrs stdenv.isDarwin {
+    ghc742 = callPackage ../development/compilers/ghc/7.4.2.nix ({ ghc = compiler.ghc704Binary; } // stdenv.lib.optionalAttrs stdenv.isDarwin {
       libiconv = pkgs.darwin.libiconv;
     });
-    ghc763 = callPackage ../development/compilers/ghc/7.6.3.nix ({ ghc = compiler.ghc704Binary; gmp = pkgs.gmp.override { withStatic = true; }; } // stdenv.lib.optionalAttrs stdenv.isDarwin {
+    ghc763 = callPackage ../development/compilers/ghc/7.6.3.nix ({ ghc = compiler.ghc704Binary; } // stdenv.lib.optionalAttrs stdenv.isDarwin {
       libiconv = pkgs.darwin.libiconv;
     });
-    ghc784 = callPackage ../development/compilers/ghc/7.8.4.nix ({ ghc = compiler.ghc742Binary; gmp = pkgs.gmp.override { withStatic = true; }; } // stdenv.lib.optionalAttrs stdenv.isDarwin {
+    ghc784 = callPackage ../development/compilers/ghc/7.8.4.nix ({ ghc = compiler.ghc742Binary; } // stdenv.lib.optionalAttrs stdenv.isDarwin {
       libiconv = pkgs.darwin.libiconv;
     });
-    ghc7101 = callPackage ../development/compilers/ghc/7.10.1.nix ({ ghc = compiler.ghc784; gmp = pkgs.gmp.override { withStatic = true; }; } // stdenv.lib.optionalAttrs stdenv.isDarwin {
+    ghc7101 = callPackage ../development/compilers/ghc/7.10.1.nix ({ ghc = compiler.ghc784; } // stdenv.lib.optionalAttrs stdenv.isDarwin {
       libiconv = pkgs.darwin.libiconv;
     });
     ghcHEAD = callPackage ../development/compilers/ghc/head.nix ({ inherit (packages.ghc784) ghc alex happy; } // stdenv.lib.optionalAttrs stdenv.isDarwin {