ocamlPackages.integers: migrate to finalAttrs

pkgs/development/ocaml-modules/integers/default.nix

@@ -5,14 +5,14 @@
   stdlib-shims,
 }:
 
-buildDunePackage rec {
+buildDunePackage (finalAttrs: {
   pname = "integers";
   version = "0.7.0";
 
   src = fetchFromGitHub {
     owner = "ocamllabs";
     repo = "ocaml-integers";
-    rev = version;
+    rev = finalAttrs.version;
     sha256 = "sha256-zuUgP1jOiVT0q6GisGpkqx7nybWbARgnAcU8NYqvCzA=";
   };
 
@@ -22,7 +22,7 @@ buildDunePackage rec {
     description = "Various signed and unsigned integer types for OCaml";
     license = lib.licenses.mit;
     homepage = "https://github.com/ocamllabs/ocaml-integers";
-    changelog = "https://github.com/ocamllabs/ocaml-integers/raw/${version}/CHANGES.md";
+    changelog = "https://github.com/ocamllabs/ocaml-integers/raw/${finalAttrs.version}/CHANGES.md";
     maintainers = [ lib.maintainers.vbgl ];
   };
-}
+})