Merge: linux: mark <6.12 with Rust as broken, assert on <6.7 with Rust (#346648)

pkgs/os-specific/linux/kernel/common-config.nix

@@ -34,7 +34,11 @@ let
 
   # Currently not enabling Rust by default, as upstream requires rustc 1.81
   defaultRust = false;
-  withRust = (forceRust || defaultRust) && kernelSupportsRust;
+  withRust =
+    assert lib.assertMsg (!(forceRust && !kernelSupportsRust)) ''
+      Kernels below 6.7 (the kernel being built is ${version}) don't support Rust.
+    '';
+    (forceRust || defaultRust) && kernelSupportsRust;
 
   options = {
 

pkgs/os-specific/linux/kernel/manual-config.nix

@@ -396,6 +396,9 @@ let
       requiredSystemFeatures = [ "big-parallel" ];
 
       meta = {
+        # https://github.com/NixOS/nixpkgs/pull/345534#issuecomment-2391238381
+        broken = withRust && lib.versionOlder version "6.12";
+
         description =
           "The Linux kernel" +
           (if kernelPatches == [] then "" else