msgpack-cxx: 6.1.1 -> 7.0.0 (#353400)

pkgs/by-name/ms/msgpack-cxx/package.nix

@@ -9,13 +9,13 @@
 
 stdenv.mkDerivation (finalAttrs: {
   pname = "msgpack-cxx";
-  version = "6.1.1";
+  version = "7.0.0";
 
   src = fetchFromGitHub {
     owner = "msgpack";
     repo = "msgpack-c";
     rev = "refs/tags/cpp-${finalAttrs.version}";
-    hash = "sha256-m0Ki+9/nZo2b4BUT+gUtdxok5I7xQtcfnMkbG+OHsKs=";
+    hash = "sha256-kg4mpNiigfZ59ZeL8LXEHwtkLU8Po+vgRcUcgTJd+h4=";
   };
 
   strictDeps = true;

pkgs/servers/foundationdb/cmake.nix

@@ -86,6 +86,12 @@ let
 
         inherit patches;
 
+        # allow using any msgpack-cxx version
+        postPatch = ''
+          substituteInPlace cmake/GetMsgpack.cmake \
+            --replace-warn 'find_package(msgpack-cxx 6 QUIET CONFIG)' 'find_package(msgpack-cxx QUIET CONFIG)'
+        '';
+
         # the install phase for cmake is pretty wonky right now since it's not designed to
         # coherently install packages as most linux distros expect -- it's designed to build
         # packaged artifacts that are shipped in RPMs, etc. we need to add some extra code to