push sheeet

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

@@ -0,0 +1,29 @@
+{
+  lib,
+  fetchFromGitHub,
+  buildDunePackage,
+  stdlib-shims,
+}:
+
+buildDunePackage rec {
+  pname = "bitstring";
+  version = "4.1.1";
+
+  duneVersion = "3";
+
+  src = fetchFromGitHub {
+    owner = "xguerin";
+    repo = pname;
+    rev = "v${version}";
+    sha256 = "sha256-eO7/S9PoMybZPnQQ+q9qbqKpYO4Foc9OjW4uiwwNds8=";
+  };
+
+  propagatedBuildInputs = [ stdlib-shims ];
+
+  meta = with lib; {
+    description = "This library adds Erlang-style bitstrings and matching over bitstrings as a syntax extension and library for OCaml";
+    homepage = "https://github.com/xguerin/bitstring";
+    license = licenses.lgpl21Plus;
+    maintainers = [ maintainers.maurer ];
+  };
+}

pkgs/development/ocaml-modules/bitstring/ppx.nix

@@ -0,0 +1,35 @@
+{
+  lib,
+  buildDunePackage,
+  fetchpatch,
+  ocaml,
+  bitstring,
+  ppxlib,
+  ounit,
+}:
+
+if lib.versionOlder ppxlib.version "0.18.0" then
+  throw "ppx_bitstring is not available with ppxlib-${ppxlib.version}"
+else
+
+  buildDunePackage {
+    pname = "ppx_bitstring";
+    inherit (bitstring) version src;
+
+    patches = lib.optional (lib.versionAtLeast ppxlib.version "0.36") (fetchpatch {
+      url = "https://github.com/xguerin/bitstring/commit/b42d4924cbb5ec5fd5309e6807852b63f456f35d.patch";
+      hash = "sha256-wtpSnGOzIUTmB3LhyHGopecy7F/5SYFOwaR6eReV+6g=";
+    });
+
+    buildInputs = [
+      bitstring
+      ppxlib
+    ];
+
+    doCheck = lib.versionAtLeast ocaml.version "4.08";
+    checkInputs = [ ounit ];
+
+    meta = bitstring.meta // {
+      description = "Bitstrings and bitstring matching for OCaml - PPX extension";
+    };
+  }