ocamlPackages.markup: small cleaning

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

@@ -8,17 +8,15 @@
   ounit2,
 }:
 
-buildDunePackage rec {
+buildDunePackage (finalAttrs: {
   pname = "markup";
   version = "1.0.3";
 
-  useDune2 = true;
-
   src = fetchFromGitHub {
     owner = "aantron";
     repo = "markup.ml";
-    rev = version;
-    sha256 = "sha256-tsXz39qFSyL6vPYKG7P73zSEiraaFuOySL1n0uFij6k=";
+    tag = finalAttrs.version;
+    hash = "sha256-tsXz39qFSyL6vPYKG7P73zSEiraaFuOySL1n0uFij6k=";
   };
 
   propagatedBuildInputs = [
@@ -27,13 +25,13 @@ buildDunePackage rec {
   ];
 
   checkInputs = [ ounit2 ];
-  doCheck = lib.versionAtLeast ocaml.version "4.08";
+  doCheck = true;
 
-  meta = with lib; {
+  meta = {
     homepage = "https://github.com/aantron/markup.ml/";
     description = "Pair of best-effort parsers implementing the HTML5 and XML specifications";
-    license = licenses.mit;
-    maintainers = with maintainers; [ gal_bolle ];
+    license = lib.licenses.mit;
+    maintainers = with lib.maintainers; [ gal_bolle ];
   };
 
-}
+})