diff --git a/pkgs/development/ocaml-modules/uucp/default.nix b/pkgs/development/ocaml-modules/uucp/default.nix
index 8e65dd942c4c..66e1a3fc5726 100644
--- a/pkgs/development/ocaml-modules/uucp/default.nix
+++ b/pkgs/development/ocaml-modules/uucp/default.nix
@@ -12,65 +12,54 @@
   uucd,
 }:
 
-let
+stdenv.mkDerivation (finalAttrs: {
+  name = "ocaml${ocaml.version}-${finalAttrs.pname}-${finalAttrs.version}";
   pname = "uucp";
   version = "17.0.0";
-  webpage = "https://erratique.ch/software/${pname}";
-  minimalOCamlVersion = "4.03";
+
+  src = fetchurl {
+    url = "https://erratique.ch/software/uucp/releases/uucp-${finalAttrs.version}.tbz";
+    hash = "sha256-mSQtTn4DYa15pYWFt0J+/BEpJRaa+6uIKnifMV4Euhs=";
+  };
+
+  nativeBuildInputs = [
+    ocaml
+    findlib
+    ocamlbuild
+    topkg
+  ];
+  buildInputs = [
+    topkg
+    uutf
+    uunf
+    uucd
+  ];
+
+  propagatedBuildInputs = [ uchar ];
+
+  strictDeps = true;
+
+  buildPhase = ''
+    runHook preBuild
+    ${topkg.buildPhase} --with-cmdliner false --tests ${lib.boolToString finalAttrs.doCheck}
+    runHook postBuild
+  '';
+
+  inherit (topkg) installPhase;
+
   doCheck = true;
-in
+  checkPhase = ''
+    runHook preCheck
+    ${topkg.run} test
+    runHook postCheck
+  '';
+  checkInputs = [ uucd ];
 
-if lib.versionOlder ocaml.version minimalOCamlVersion then
-  throw "${pname} needs at least OCaml ${minimalOCamlVersion}"
-else
-
-  stdenv.mkDerivation {
-
-    name = "ocaml${ocaml.version}-${pname}-${version}";
-
-    src = fetchurl {
-      url = "${webpage}/releases/${pname}-${version}.tbz";
-      hash = "sha256-mSQtTn4DYa15pYWFt0J+/BEpJRaa+6uIKnifMV4Euhs=";
-    };
-
-    nativeBuildInputs = [
-      ocaml
-      findlib
-      ocamlbuild
-      topkg
-    ];
-    buildInputs = [
-      topkg
-      uutf
-      uunf
-      uucd
-    ];
-
-    propagatedBuildInputs = [ uchar ];
-
-    strictDeps = true;
-
-    buildPhase = ''
-      runHook preBuild
-      ${topkg.buildPhase} --with-cmdliner false --tests ${lib.boolToString doCheck}
-      runHook postBuild
-    '';
-
-    inherit (topkg) installPhase;
-
-    inherit doCheck;
-    checkPhase = ''
-      runHook preCheck
-      ${topkg.run} test
-      runHook postCheck
-    '';
-    checkInputs = [ uucd ];
-
-    meta = {
-      description = "OCaml library providing efficient access to a selection of character properties of the Unicode character database";
-      homepage = webpage;
-      inherit (ocaml.meta) platforms;
-      license = lib.licenses.bsd3;
-      maintainers = [ lib.maintainers.vbgl ];
-    };
-  }
+  meta = {
+    description = "OCaml library providing efficient access to a selection of character properties of the Unicode character database";
+    homepage = "https://erratique.ch/software/uucp";
+    inherit (ocaml.meta) platforms;
+    license = lib.licenses.bsd3;
+    maintainers = [ lib.maintainers.vbgl ];
+  };
+})