diff --git a/nix/overlays/main.nix b/nix/overlays/main.nix
index 0e2fe68..51e3b39 100644
--- a/nix/overlays/main.nix
+++ b/nix/overlays/main.nix
@@ -1 +1,7 @@
-final: prev: {}
+final: prev: {
+  haskellPackages = prev.haskellPackages.override {
+    overrides = hfinal: hprev: {
+      p2prc = hfinal.callPackage ../../Bindings/Haskell/project.nix { };
+    };
+  };
+}