ocamlPackages.ladspa: small cleaning

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

@@ -6,26 +6,24 @@
   ladspaH,
 }:
 
-buildDunePackage rec {
+buildDunePackage (finalAttrs: {
   pname = "ladspa";
   version = "0.2.2";
 
-  useDune2 = true;
-
   src = fetchFromGitHub {
     owner = "savonet";
     repo = "ocaml-ladspa";
-    rev = "v${version}";
-    sha256 = "1y83infjaz9apzyvaaqw331zqdysmn3bpidfab061v3bczv4jzbz";
+    tag = "v${finalAttrs.version}";
+    hash = "sha256-f31J9mdr7GDAUq7Fu4at2jf8wxgcK7X9vyp9JZ2NA/k=";
   };
 
   buildInputs = [ dune-configurator ];
   propagatedBuildInputs = [ ladspaH ];
 
-  meta = with lib; {
+  meta = {
     homepage = "https://github.com/savonet/ocaml-alsa";
     description = "Bindings for the LADSPA API which provides audio effects";
-    license = licenses.lgpl21Only;
-    maintainers = with maintainers; [ dandellion ];
+    license = lib.licenses.lgpl21Only;
+    maintainers = [ lib.maintainers.dandellion ];
   };
-}
+})