ocamlPackages.shared-memory-ring: use Dune 3

pkgs/development/ocaml-modules/shared-memory-ring/default.nix

···
 , buildDunePackage
 , fetchurl
 , ppx_cstruct
-, mirage-profile
 , cstruct
+, lwt
 , ounit
-, stdlib-shims
 }:
 
 buildDunePackage rec {
   pname = "shared-memory-ring";
   version = "3.1.1";
+
+  duneVersion = "3";
 
   src = fetchurl {
     url = "https://github.com/mirage/shared-memory-ring/releases/download/v${version}/shared-memory-ring-${version}.tbz";
-    sha256 = "sha256-KW8grij/OAnFkdUdRRZF21X39DvqayzkTWeRKwF8uoU=";
+    hash = "sha256-KW8grij/OAnFkdUdRRZF21X39DvqayzkTWeRKwF8uoU=";
   };
 
   buildInputs = [
···
   ];
 
   propagatedBuildInputs = [
-    mirage-profile
     cstruct
-    stdlib-shims
   ];
 
   doCheck = true;
   checkInputs = [
+    lwt
     ounit
   ];
 

pkgs/development/ocaml-modules/shared-memory-ring/lwt.nix

···
 
   inherit (shared-memory-ring) version src;
 
+  duneVersion = "3";
+
   buildInputs = [
     ppx_cstruct
   ];