ocamlPackages.grace: init at 0.3.0

Assisted-by: Claude Sonnet 4.6 (Anthropic)
Co-authored-by: Léo <16472988+redianthus@users.noreply.github.com>
Co-authored-by: Vincent Laporte <vbgl@users.noreply.github.com>
(cherry picked from commit 26f41474f6)

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

@@ -0,0 +1,50 @@
+{
+  lib,
+  buildDunePackage,
+  fetchFromGitHub,
+  fmt,
+  iter,
+  uutf,
+  sexplib,
+  ppx_sexp_conv,
+  core,
+  ppx_jane,
+  dedent ? null,
+}:
+
+buildDunePackage (finalAttrs: {
+  pname = "grace";
+  version = "0.3.0";
+
+  minimalOCamlVersion = "4.14";
+
+  src = fetchFromGitHub {
+    owner = "johnyob";
+    repo = "grace";
+    tag = finalAttrs.version;
+    hash = "sha256-V5K9RGk47K/R+q4wS1FU02kMi1uWSCgdUjKHk7uXuGw=";
+  };
+
+  propagatedBuildInputs = [
+    fmt
+    iter
+    uutf
+    sexplib
+    ppx_sexp_conv
+  ];
+
+  checkInputs = [
+    core
+    ppx_jane
+    dedent
+  ];
+
+  doCheck = true;
+
+  meta = {
+    description = "A fancy diagnostics library that allows your compilers to exit with grace";
+    homepage = "https://github.com/johnyob/grace";
+    license = lib.licenses.mit;
+    maintainers = with lib.maintainers; [ otini ];
+  };
+})

pkgs/top-level/ocaml-packages.nix

@@ -762,6 +762,8 @@ let
           inherit (pkgs) gnuplot;
         };
 
+        grace = callPackage ../development/ocaml-modules/grace { };
+
         graphics =
           if lib.versionOlder "4.09" ocaml.version then
             callPackage ../development/ocaml-modules/graphics { }