diff --git a/pkgs/development/haskell-modules/default.nix b/pkgs/development/haskell-modules/default.nix
index 32fa46f111d..d68b10b386e 100644
--- a/pkgs/development/haskell-modules/default.nix
+++ b/pkgs/development/haskell-modules/default.nix
@@ -7,6 +7,8 @@
 , configurationNix ? import ./configuration-nix.nix
 }:
 
+self: # Provided by `callPackageWithSelf`
+
 let
 
   inherit (stdenv.lib) extends makeExtensible;
@@ -14,19 +16,15 @@ let
 
   haskellPackages = makePackageSet {
     package-set = initialPackages;
-    inherit ghc extensible-self;
+    extensible-self = self;
+    inherit ghc;
   };
 
   commonConfiguration = configurationCommon { inherit pkgs; };
   nixConfiguration = configurationNix { inherit pkgs; };
 
-  extensible-self = makeExtensible
-    (extends overrides
-      (extends packageSetConfig
-        (extends compilerConfig
-          (extends commonConfiguration
-            (extends nixConfiguration haskellPackages)))));
-
-in
-
-  extensible-self
+in (extends overrides
+     (extends packageSetConfig
+       (extends compilerConfig
+         (extends commonConfiguration
+           (extends nixConfiguration haskellPackages))))) self
diff --git a/pkgs/top-level/all-packages.nix b/pkgs/top-level/all-packages.nix
index c783b3cb916..30e9d327c6e 100644
--- a/pkgs/top-level/all-packages.nix
+++ b/pkgs/top-level/all-packages.nix
@@ -5481,9 +5481,7 @@ with pkgs;
 
   haskell = callPackage ./haskell-packages.nix { };
 
-  haskellPackages = haskell.packages.ghc802.override {
-    overrides = config.haskellPackageOverrides or (self: super: {});
-  };
+  haskellPackages = haskell.packages.ghc802.extend (config.haskellPackageOverrides or (self: super: {}));
 
   inherit (haskellPackages) ghc;
 
diff --git a/pkgs/top-level/haskell-packages.nix b/pkgs/top-level/haskell-packages.nix
index 099e45f1022..36ae1979ba0 100644
--- a/pkgs/top-level/haskell-packages.nix
+++ b/pkgs/top-level/haskell-packages.nix
@@ -1,4 +1,4 @@
-{ pkgs, callPackage, stdenv, buildPlatform, targetPlatform }:
+{ pkgs, callPackage, callPackageWithSelf, stdenv, buildPlatform, targetPlatform }:
 
 let # These are attributes in compiler and packages that don't support integer-simple.
     integerSimpleExcludes = [
@@ -118,79 +118,79 @@ in rec {
   packages = {
 
     # Support for this compiler is broken, because it can't deal with directory-based package databases.
-    # ghc6104 = callPackage ../development/haskell-modules { ghc = compiler.ghc6104; };
-    ghc6123 = callPackage ../development/haskell-modules {
+    # ghc6104 = callPackageWithSelf ../development/haskell-modules { ghc = compiler.ghc6104; };
+    ghc6123 = callPackageWithSelf ../development/haskell-modules {
       ghc = compiler.ghc6123;
       compilerConfig = callPackage ../development/haskell-modules/configuration-ghc-6.12.x.nix { };
     };
-    ghc704 = callPackage ../development/haskell-modules {
+    ghc704 = callPackageWithSelf ../development/haskell-modules {
       ghc = compiler.ghc704;
       compilerConfig = callPackage ../development/haskell-modules/configuration-ghc-7.0.x.nix { };
     };
-    ghc722 = callPackage ../development/haskell-modules {
+    ghc722 = callPackageWithSelf ../development/haskell-modules {
       ghc = compiler.ghc722;
       compilerConfig = callPackage ../development/haskell-modules/configuration-ghc-7.2.x.nix { };
     };
-    ghc742 = callPackage ../development/haskell-modules {
+    ghc742 = callPackageWithSelf ../development/haskell-modules {
       ghc = compiler.ghc742;
       compilerConfig = callPackage ../development/haskell-modules/configuration-ghc-7.4.x.nix { };
     };
-    ghc763 = callPackage ../development/haskell-modules {
+    ghc763 = callPackageWithSelf ../development/haskell-modules {
       ghc = compiler.ghc763;
       compilerConfig = callPackage ../development/haskell-modules/configuration-ghc-7.6.x.nix { };
     };
-    ghc783 = callPackage ../development/haskell-modules {
+    ghc783 = callPackageWithSelf ../development/haskell-modules {
       ghc = compiler.ghc783;
       compilerConfig = callPackage ../development/haskell-modules/configuration-ghc-7.8.x.nix { };
     };
-    ghc784 = callPackage ../development/haskell-modules {
+    ghc784 = callPackageWithSelf ../development/haskell-modules {
       ghc = compiler.ghc784;
       compilerConfig = callPackage ../development/haskell-modules/configuration-ghc-7.8.x.nix { };
     };
-    ghc7102 = callPackage ../development/haskell-modules {
+    ghc7102 = callPackageWithSelf ../development/haskell-modules {
       ghc = compiler.ghc7102;
       compilerConfig = callPackage ../development/haskell-modules/configuration-ghc-7.10.x.nix { };
     };
-    ghc7103 = callPackage ../development/haskell-modules {
+    ghc7103 = callPackageWithSelf ../development/haskell-modules {
       ghc = compiler.ghc7103;
       compilerConfig = callPackage ../development/haskell-modules/configuration-ghc-7.10.x.nix { };
     };
-    ghc801 = callPackage ../development/haskell-modules {
+    ghc801 = callPackageWithSelf ../development/haskell-modules {
       ghc = compiler.ghc801;
       compilerConfig = callPackage ../development/haskell-modules/configuration-ghc-8.0.x.nix { };
     };
-    ghc802 = callPackage ../development/haskell-modules {
+    ghc802 = callPackageWithSelf ../development/haskell-modules {
       ghc = compiler.ghc802;
       compilerConfig = callPackage ../development/haskell-modules/configuration-ghc-8.0.x.nix { };
     };
-    ghc821 = callPackage ../development/haskell-modules {
+    ghc821 = callPackageWithSelf ../development/haskell-modules {
       ghc = compiler.ghc821;
       compilerConfig = callPackage ../development/haskell-modules/configuration-ghc-8.2.x.nix { };
     };
-    ghcHEAD = callPackage ../development/haskell-modules {
+    ghcHEAD = callPackageWithSelf ../development/haskell-modules {
       ghc = compiler.ghcHEAD;
       compilerConfig = callPackage ../development/haskell-modules/configuration-ghc-head.nix { };
     };
     # TODO Support for multiple variants here
-    ghcCross = callPackage ../development/haskell-modules {
+    ghcCross = callPackageWithSelf ../development/haskell-modules {
       ghc = compiler.ghcHEAD.crossCompiler;
       compilerConfig = callPackage ../development/haskell-modules/configuration-ghc-head.nix { };
     };
-    ghcCross821 = callPackage ../development/haskell-modules {
+    ghcCross821 = callPackageWithSelf ../development/haskell-modules {
       ghc = compiler.ghc821.crossCompiler;
       compilerConfig = callPackage ../development/haskell-modules/configuration-ghc-8.2.x.nix { };
     };
-    ghcjs = callPackage ../development/haskell-modules {
+    ghcjs = callPackageWithSelf ../development/haskell-modules {
       ghc = compiler.ghcjs;
       compilerConfig = callPackage ../development/haskell-modules/configuration-ghc-7.10.x.nix { };
       packageSetConfig = callPackage ../development/haskell-modules/configuration-ghcjs.nix { };
     };
-    ghcjsHEAD = callPackage ../development/haskell-modules {
+    ghcjsHEAD = callPackageWithSelf ../development/haskell-modules {
       ghc = compiler.ghcjsHEAD;
       compilerConfig = callPackage ../development/haskell-modules/configuration-ghc-8.0.x.nix { };
       packageSetConfig = callPackage ../development/haskell-modules/configuration-ghcjs.nix { };
     };
-    ghcHaLVM240 = callPackage ../development/haskell-modules {
+    ghcHaLVM240 = callPackageWithSelf ../development/haskell-modules {
       ghc = compiler.ghcHaLVM240;
       compilerConfig = callPackage ../development/haskell-modules/configuration-halvm-2.4.0.nix { };
     };