push sheeet

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

@@ -0,0 +1,38 @@
+{
+  lib,
+  easy-format,
+  buildDunePackage,
+  fetchurl,
+}:
+
+buildDunePackage rec {
+  pname = "dum";
+  version = "1.0.3";
+
+  src = fetchurl {
+    url = "https://github.com/mjambon/dum/releases/download/${version}/dum-${version}.tbz";
+    hash = "sha256-ZFojUD/IoxVTDfGyh2wveFsSz4D19pKkHrNuU+LFJlE=";
+  };
+
+  postPatch = ''
+    substituteInPlace "dum.ml" \
+    --replace-fail "Lazy.lazy_is_val" "Lazy.is_val" \
+    --replace-fail "Obj.final_tag" "Obj.custom_tag"
+  '';
+
+  propagatedBuildInputs = [ easy-format ];
+
+  meta = {
+    homepage = "https://github.com/mjambon/dum";
+    description = "Inspect the runtime representation of arbitrary OCaml values";
+    longDescription = ''
+      Dum is a library for inspecting the runtime representation of
+      arbitrary OCaml values. Shared or cyclic data are detected
+      and labelled. This guarantees that printing would always
+      terminate. This makes it possible to print values such as closures,
+      objects or exceptions in depth and without risk.
+    '';
+    license = lib.licenses.lgpl21Plus;
+    maintainers = with lib.maintainers; [ alexfmpe ];
+  };
+}