diff --git a/README.md b/README.md
index e4949d1..5665b70 100644
--- a/README.md
+++ b/README.md
@@ -132,6 +132,10 @@ opinionated ppx for string literals: <https://git.lain.faith/haskal/ppx_unicode>
 
 logging for cats, in ocaml: <https://git.lain.faith/haskal/xlog>
 
+### [`ocamlPackages.systemd-ml`](./pkgs/ocaml/systemd-ml)
+
+libsystemd implementation in native ocaml: <https://git.lain.faith/haskal/systemd-ml>
+
 ### [`python312Packages.feedvalidator` or `feedvalidator`](./pkgs/python/feedvalidator)
 
 the W3C atom/RSS feed validator library, <https://github.com/w3c/feedvalidator>
diff --git a/overlay.nix b/overlay.nix
index 05c932c..1be6844 100644
--- a/overlay.nix
+++ b/overlay.nix
@@ -23,6 +23,7 @@ final: prev: {
   ocamlPackages = prev.ocamlPackages.overrideScope (ofinal: oprev: {
     ppx_unicode = ofinal.callPackage ./pkgs/ocaml/ppx_unicode {};
     xlog = ofinal.callPackage ./pkgs/ocaml/xlog {};
+    systemd-ml = ofinal.callPackage ./pkgs/ocaml/systemd-ml {};
   });
 
   python3Packages = prev.python3Packages.overrideScope (pfinal: pprev: {
diff --git a/pkgs/ocaml/systemd-ml/default.nix b/pkgs/ocaml/systemd-ml/default.nix
new file mode 100644
index 0000000..390db8e
--- /dev/null
+++ b/pkgs/ocaml/systemd-ml/default.nix
@@ -0,0 +1,43 @@
+{
+  fetchgit,
+  buildDunePackage,
+
+  cstruct,
+  dune-configurator,
+  eio,
+  eio_linux,
+  eio_main,
+  ppx_unicode,
+  ptime,
+  xlog,
+}:
+buildDunePackage rec {
+  pname = "systemd-ml";
+  version = "0.1.0";
+
+  src = fetchgit {
+    url = "https://git.lain.faith/haskal/systemd-ml.git";
+    rev = version;
+    hash = "sha256-IkWBObwQJF5wum46OsLTH1wmPqWnF5/UuTnBFbs/o/0=";
+  };
+
+  minimalOcamlVersion = "5.1";
+  dontStrip = true;
+
+  nativeBuildInputs = [ dune-configurator ppx_unicode ];
+  propagatedBuildInputs = [ cstruct dune-configurator eio eio_linux eio_main ppx_unicode ptime xlog ];
+
+  meta = {
+    description = "";
+    homepage = "https://git.lain.faith/haskal/systemd-ml";
+    license = {
+      shortName = "fyptl";
+      fullName = "fuck you pirate this license";
+      deprecated = false;
+      free = false;
+      redistributable = false;
+      url = "data:text/html,<h1>fuck you pirate this</h1>";
+    };
+    maintainers = [];
+  };
+}