diff --git a/release.nix b/release.nix
index 278c824..9035b55 100644
--- a/release.nix
+++ b/release.nix
@@ -1,5 +1,18 @@
 let
-  pkgs = import <nixpkgs> { };
-in
-  { ga = pkgs.haskellPackages.callPackage ./default.nix { };
-  }
+  config = {
+    packageOverrides = pkgs: rec {
+      haskellPackages = pkgs.haskellPackages.override {
+        overrides = haskellPackagesNew: haskellPackagesOld: rec {
+          # NOTE to enable profiling in all other libraries (to enable for
+          # haxcs, add ghc-options)
+          # mkDerivation = args: super.mkDerivation (args // {
+          #   enableLibraryProfiling = true;
+          # });
+
+          ga = haskellPackagesNew.callPackage ./default.nix { };
+        };
+      };
+    };
+  };
+  pkgs = import <nixpkgs> { inherit config; };
+in { ga = pkgs.haskellPackages.ga; }