IntersectMBO
diff --git a/‎flake.lock
+7-6 b/‎flake.lock
+7-6
diff --git a/‎flake.nix
+1-1 b/‎flake.nix
+1-1
@@ -42,7 +42,7 @@
     };
 
     hackageNix = {
-      url = "github:input-output-hk/hackage.nix";
+      url = "github:input-output-hk/hackage.nix?ref=for-stackage";
       flake = false;
     };