mark dynamic jemalloc builds as broken on linux

flake.nix

@@ -90,6 +90,8 @@
         ])
         ++ scope.main.propagatedBuildInputs
         ++ scope.main.nativeBuildInputs;
+
+        meta.broken = scope.main.meta.broken;
       };
     in
     {

nix/pkgs/main/default.nix

@@ -155,4 +155,11 @@ craneLib.buildPackage ( commonAttrs // {
   };
 
   meta.mainProgram = commonAttrs.pname;
+  # Dynamically-linked jemalloc is broken on linux due to link-order problems,
+  # where the symbols are being resolved to libc malloc/free before jemalloc is
+  # loaded. This problem does not occur on darwin for unknown reasons.
+  meta.broken =
+    stdenv.isLinux &&
+    !stdenv.hostPlatform.isStatic &&
+    (featureEnabled "jemalloc");
 })