ocamlPackages.mparser: small cleaning

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

@@ -4,16 +4,15 @@
   buildDunePackage,
 }:
 
-buildDunePackage rec {
+buildDunePackage (finalAttrs: {
   pname = "mparser";
   version = "1.3";
-  useDune2 = true;
 
   src = fetchFromGitHub {
     owner = "murmour";
     repo = "mparser";
-    rev = version;
-    sha256 = "16j19v16r42gcsii6a337zrs5cxnf12ig0vaysxyr7sq5lplqhkx";
+    tag = finalAttrs.version;
+    hash = "sha256-fUJMLy1Yn+y79mqDF0VwtrOi8z9jKBOjZk+QbMJOQZo=";
   };
 
   meta = {
@@ -22,4 +21,4 @@ buildDunePackage rec {
     homepage = "https://github.com/murmour/mparser";
     maintainers = [ lib.maintainers.vbgl ];
   };
-}
+})

pkgs/development/ocaml-modules/mparser/pcre.nix

@@ -6,7 +6,6 @@
 
 buildDunePackage {
   pname = "mparser-pcre";
-  useDune2 = true;
 
   inherit (mparser) src version;