From 8b3896f81da8caed67ec46fbe9155d13ea07df68 Mon Sep 17 00:00:00 2001
From: Volker Diels-Grabsch <v@njh.eu>
Date: Wed, 23 Jul 2025 02:07:26 +0200
Subject: [PATCH] ocamlPackages.camlgpc: init at 1.2

---
 .../ocaml-modules/camlgpc/default.nix         | 36 +++++++++++++++++++
 pkgs/top-level/ocaml-packages.nix             |  2 ++
 2 files changed, 38 insertions(+)
 create mode 100644 pkgs/development/ocaml-modules/camlgpc/default.nix

diff --git a/pkgs/development/ocaml-modules/camlgpc/default.nix b/pkgs/development/ocaml-modules/camlgpc/default.nix
new file mode 100644
index 000000000000..4b201aab71c8
--- /dev/null
+++ b/pkgs/development/ocaml-modules/camlgpc/default.nix
@@ -0,0 +1,36 @@
+{
+  buildDunePackage,
+  fetchFromGitHub,
+  fetchpatch,
+  lib,
+}:
+
+let
+  pname = "camlgpc";
+  version = "1.2";
+in
+buildDunePackage {
+  inherit pname version;
+  src = fetchFromGitHub {
+    owner = "johnwhitington";
+    repo = pname;
+    rev = "v${version}";
+    hash = "sha256-+Dx8BuRlxb8xh41jHskrNcKGV/HgedauLt1vo1tADHw=";
+  };
+  patches = [
+    (fetchpatch {
+      name = "camlgpc-pr-5-switch-to-dune";
+      url = "https://github.com/johnwhitington/camlgpc/pull/5.diff";
+      hash = "sha256-znm+mX60RwYNCYXwm9HYCO8BRbzUM0Bm6dI1f1FzncA=";
+    })
+  ];
+  propagatedBuildInputs = [ ];
+  doCheck = true;
+  checkInputs = [ ];
+  meta = {
+    description = "OCaml interface to Alan Murta's General Polygon Clipper";
+    homepage = "https://github.com/johnwhitington/camlgpc";
+    license = lib.licenses.mit;
+    maintainers = [ lib.maintainers.vog ];
+  };
+}
diff --git a/pkgs/top-level/ocaml-packages.nix b/pkgs/top-level/ocaml-packages.nix
index 3e62e9848142..03dec5e469ed 100644
--- a/pkgs/top-level/ocaml-packages.nix
+++ b/pkgs/top-level/ocaml-packages.nix
@@ -165,6 +165,8 @@ let
 
         callipyge = callPackage ../development/ocaml-modules/callipyge { };
 
+        camlgpc = callPackage ../development/ocaml-modules/camlgpc { };
+
         camlidl = callPackage ../development/tools/ocaml/camlidl { };
 
         camlimages = callPackage ../development/ocaml-modules/camlimages { };