haskellPackages.lenz: Fix against latest hs-functors

pkgs/development/haskell-modules/configuration-common.nix

@@ -1008,4 +1008,15 @@ self: super: {
 
   # https://github.com/alphaHeavy/protobuf/issues/34
   protobuf = dontCheck super.protobuf;
+
+  # https://github.com/strake/lenz.hs/issues/2
+  lenz =
+    let patch = pkgs.fetchpatch
+          { url = https://github.com/strake/lenz.hs/commit/4b9b79104759b9c6b24484455e1eb0d962eb3cff.patch;
+            sha256 = "02i0w9i55a4r251wgjzl5vbk6m2qhilwl7bfp5jwmf22z66sglyn";
+          };
+    in overrideCabal super.lenz (drv:
+      { patches = (drv.patches or []) ++ [ patch ];
+        editedCabalFile = null;
+      });
 }