diff --git a/pkgs/development/haskell-modules/configuration-nix.nix b/pkgs/development/haskell-modules/configuration-nix.nix
index 85421ba960e8..3dd462397742 100644
--- a/pkgs/development/haskell-modules/configuration-nix.nix
+++ b/pkgs/development/haskell-modules/configuration-nix.nix
@@ -216,20 +216,19 @@ self: super: builtins.intersectAttrs super {
   # Uses OpenGL in testing
   caramia = dontCheck super.caramia;
 
-  llvm-general-darwin = overrideCabal (super.llvm-general.override { llvm-config = pkgs.llvm_35; }) (drv: {
-      preConfigure = ''
-        sed -i llvm-general.cabal \
-            -e 's,extra-libraries: stdc++,extra-libraries: c++,'
-      '';
-      configureFlags = (drv.configureFlags or []) ++ ["--extra-include-dirs=${pkgs.libcxx}/include/c++/v1"];
-      librarySystemDepends = [ pkgs.libcxx ] ++ drv.librarySystemDepends or [];
-    });
-
-  # Supports only 3.5 for now, https://github.com/bscarlet/llvm-general/issues/142
   llvm-general =
-    if pkgs.stdenv.isDarwin
-    then self.llvm-general-darwin
-    else super.llvm-general.override { llvm-config = pkgs.llvm_35; };
+    # Supports only 3.5 for now, https://github.com/bscarlet/llvm-general/issues/142
+    let base = super.llvm-general.override { llvm-config = pkgs.llvm_35; };
+    in if !pkgs.stdenv.isDarwin then base else overrideCabal base (
+      drv: {
+        preConfigure = ''
+          sed -i llvm-general.cabal \
+              -e 's,extra-libraries: stdc++,extra-libraries: c++,'
+        '';
+        configureFlags = (drv.configureFlags or []) ++ ["--extra-include-dirs=${pkgs.libcxx}/include/c++/v1"];
+        librarySystemDepends = [ pkgs.libcxx ] ++ drv.librarySystemDepends or [];
+      }
+    );
 
   # Needs help finding LLVM.
   spaceprobe = addBuildTool super.spaceprobe self.llvmPackages.llvm;