diff --git a/pkgs/development/r-modules/default.nix b/pkgs/development/r-modules/default.nix
index 890112c4d635..b9a4d05f7eee 100644
--- a/pkgs/development/r-modules/default.nix
+++ b/pkgs/development/r-modules/default.nix
@@ -1330,6 +1330,14 @@ let
       '';
     });
 
+    metahdep = old.metahdep.overrideAttrs (attrs: {
+      env = (attrs.env or { }) // {
+        # Avoid incompatible pointer type error
+        NIX_CFLAGS_COMPILE = attrs.env.NIX_CFLAGS_COMPILE + " -Wno-int-conversion";
+      };
+    });
+
+
     ModelMetrics = old.ModelMetrics.overrideAttrs (attrs: {
       env = (attrs.env or { }) // {
         NIX_CFLAGS_COMPILE = attrs.env.NIX_CFLAGS_COMPILE + lib.optionalString stdenv.hostPlatform.isDarwin " -fopenmp";