push sheeet

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

@@ -0,0 +1,62 @@
+{
+  stdenv,
+  lib,
+  fetchFromGitHub,
+  ocaml,
+  findlib,
+  ocamlbuild,
+}:
+
+stdenv.mkDerivation (
+  {
+    version = "0.1";
+    pname = "ocaml${ocaml.version}-seq";
+
+    meta = {
+      license = lib.licenses.lgpl21;
+      maintainers = [ lib.maintainers.vbgl ];
+      homepage = "https://github.com/c-cube/seq";
+      inherit (ocaml.meta) platforms;
+    };
+
+  }
+  // (
+    if lib.versionOlder ocaml.version "4.07" then
+      {
+
+        src = fetchFromGitHub {
+          owner = "c-cube";
+          repo = "seq";
+          rev = "0.1";
+          sha256 = "1cjpsc7q76yfgq9iyvswxgic4kfq2vcqdlmxjdjgd4lx87zvcwrv";
+        };
+
+        nativeBuildInputs = [
+          ocaml
+          findlib
+          ocamlbuild
+        ];
+        strictDeps = true;
+
+        createFindlibDestdir = true;
+
+        meta.description = "Compatibility package for OCaml’s standard iterator type starting from 4.07";
+
+      }
+    else
+      {
+
+        src = ./src-base;
+
+        dontBuild = true;
+
+        installPhase = ''
+          mkdir -p $out/lib/ocaml/${ocaml.version}/site-lib/seq
+          cp META $out/lib/ocaml/${ocaml.version}/site-lib/seq
+        '';
+
+        meta.description = "Dummy backward-compatibility package for iterators";
+
+      }
+  )
+)