push sheeet

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

@@ -0,0 +1,31 @@
+{
+  buildDunePackage,
+  replaceVars,
+  ocaml,
+  menhirLib,
+  menhirSdk,
+}:
+
+buildDunePackage {
+  pname = "menhir";
+
+  minimalOCamlVersion = "4.03";
+
+  inherit (menhirLib) version src;
+
+  buildInputs = [
+    menhirLib
+    menhirSdk
+  ];
+
+  patches = [
+    (replaceVars ./menhir-suggest-menhirLib.patch {
+      libdir = "${menhirLib}/lib/ocaml/${ocaml.version}/site-lib/menhirLib";
+    })
+  ];
+
+  meta = menhirSdk.meta // {
+    description = "LR(1) parser generator for OCaml";
+    mainProgram = "menhir";
+  };
+}

pkgs/development/ocaml-modules/menhir/lib.nix

@@ -0,0 +1,40 @@
+{
+  lib,
+  buildDunePackage,
+  ocaml,
+  coqPackages,
+  version ? if lib.versionAtLeast ocaml.version "4.08" then "20250903" else "20231231",
+}:
+
+let
+  fetched = coqPackages.metaFetch {
+    release."20231231".sha256 = "sha256-veB0ORHp6jdRwCyDDAfc7a7ov8sOeHUmiELdOFf/QYk=";
+    release."20240715".sha256 = "sha256-9CSxAIm0aEXkwF+aj8u/bqLG30y5eDNz65EnohJPjzI=";
+    release."20250903".sha256 = "sha256-ap1OvcvCAuqmFDwhPwMBosHs3cm5NxPW/w1J8AzWduk=";
+    releaseRev = v: "${v}";
+    location = {
+      domain = "gitlab.inria.fr";
+      owner = "fpottier";
+      repo = "menhir";
+    };
+  } version;
+in
+buildDunePackage {
+  pname = "menhirLib";
+  inherit (fetched) version src;
+
+  minimalOCamlVersion = "4.03";
+
+  meta = with lib; {
+    homepage = "http://pauillac.inria.fr/~fpottier/menhir/";
+    description = "Runtime support library for parsers generated by Menhir";
+    longDescription = ''
+      Menhir is a LR(1) parser generator for the Objective Caml programming
+      language.  That is, Menhir compiles LR(1) grammar specifications down
+      to OCaml code.  Menhir was designed and implemented by François Pottier
+      and Yann Régis-Gianas.
+    '';
+    license = with licenses; [ lgpl2Only ];
+    maintainers = with maintainers; [ vbgl ];
+  };
+}

pkgs/development/ocaml-modules/menhir/menhir-suggest-menhirLib.patch

@@ -0,0 +1,19 @@
+diff --git a/src/installation.ml b/src/installation.ml
+index 3c64e395..be7d6e7b 100644
+--- a/src/installation.ml
++++ b/src/installation.ml
+@@ -39,13 +39,4 @@ let rec normalize fn =
+    and hope that it is of the form [.../bin/menhir]. We change this to
+    [.../lib/menhirLib], and hope that this is where MenhirLib is installed. *)
+ 
+-let libdir () =
+-  let root =
+-    Sys.executable_name
+-    |> normalize
+-    |> Filename.dirname (* remove [menhir] *)
+-    |> Filename.dirname (* remove [bin] *)
+-  in
+-  Filename.concat
+-    root
+-    (Filename.concat "lib" "menhirLib")
++let libdir () = ignore normalize; "@libdir@"

pkgs/development/ocaml-modules/menhir/sdk.nix

@@ -0,0 +1,16 @@
+{
+  lib,
+  buildDunePackage,
+  menhirLib,
+}:
+
+buildDunePackage {
+  pname = "menhirSdk";
+
+  inherit (menhirLib) version src;
+
+  meta = menhirLib.meta // {
+    description = "Compile-time library for auxiliary tools related to Menhir";
+    license = with lib.licenses; [ gpl2Only ];
+  };
+}