ocamlPackages.cascade: init at 0-unstable-2026-06-26

(cherry picked from commit a7f2fc98cf)

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

@@ -0,0 +1,52 @@
+{
+  alcobar,
+  buildDunePackage,
+  dune-build-info,
+  fetchFromGitHub,
+  lambdasoup,
+  lib,
+  logs,
+  mdx,
+  memtrace,
+  psq,
+  uutf,
+}:
+
+buildDunePackage (finalAttrs: {
+  pname = "cascade";
+  version = "0-unstable-2026-06-26";
+  minimalOCamlVersion = "5.2";
+  __structuredAttrs = true;
+
+  src = fetchFromGitHub {
+    owner = "samoht";
+    repo = "cascade";
+    rev = "434c07be7ec1a63213a234946d57937e4d080feb";
+    hash = "sha256-6g8UKsXdR0PxihrOiMVC36q7+bomMByPDbmuISL7h4U=";
+  };
+
+  propagatedBuildInputs = [
+    dune-build-info
+    logs
+    psq
+    uutf
+  ];
+  buildInputs = [
+    lambdasoup
+    memtrace
+  ];
+
+  nativeCheckInputs = [ mdx.bin ];
+  checkInputs = [
+    (mdx.override { inherit logs; })
+    alcobar
+  ];
+  doCheck = true;
+
+  meta = {
+    description = "CSS generation and manipulation library for OCaml";
+    homepage = "https://github.com/samoht/cascade";
+    license = lib.licenses.isc;
+    maintainers = [ lib.maintainers.vog ];
+  };
+})

pkgs/top-level/ocaml-packages.nix

@@ -243,6 +243,8 @@ let
           git-binary = pkgs.git;
         };
 
+        cascade = callPackage ../development/ocaml-modules/cascade { };
+
         cbor = callPackage ../development/ocaml-modules/cbor { };
 
         cfstream = callPackage ../development/ocaml-modules/cfstream { };