linux-megous: fix eval error from aliased kernelPatches

have not completed a redeploy, so unsure if this has precisely the same
meaning as it used to.

pkgs/additional/linux-megous/default.nix

@@ -2,44 +2,49 @@
 , buildLinux
 , buildPackages
 , fetchFromGitHub
-, kernelPatches
 , modDirVersionArg ? null
 , nixosTests
 , perl
+, pkgs
 , ...
 } @ args:
 
 with lib;
 
 let
-  kernelPatches' = kernelPatches;
   base = "6.2.0";
   # set to empty if not a release candidate
   rc = "-rc5";
-in buildLinux (args // rec {
-  version = base + rc;
-
-  # modDirVersion needs to be x.y.z, will automatically add .0 if needed
-  modDirVersion = if (modDirVersionArg == null) then concatStringsSep "." (take 3 (splitVersion "${version}.0")) + rc else modDirVersionArg;
-
-  # branchVersion needs to be x.y
-  extraMeta.branch = versions.majorMinor version;
-
-  kernelPatches = [
-    kernelPatches'.bridge_stp_helper
-    kernelPatches'.request_key_helper
+  # `pkgs.kernelPatches` is a set of common patches
+  # while `kernelPatches` callarg is a list.
+  # weird idiom, means we have to access pkgs.kernelPatches to access the actual patch directory:
+  extraKernelPatches = [
+    pkgs.kernelPatches.bridge_stp_helper
+    pkgs.kernelPatches.request_key_helper
   ];
+  overridenArgs = args // rec {
+    version = base + rc;
 
-  src = fetchFromGitHub {
-    # HOW TO UPDATE:
-    # - `git fetch` from megous' github.
-    # - there should be some new tag, like `orange-pi-6.1-blah`. use that.
-    # - megi publishes release notes as the most recent commit on any stable branch, so just `git log`.
-    # - orange-pi is listed as the "main integration branch".
-    #   - specific branches like `pp` (pinephone) are dev branches, and probably less stable.
-    owner = "megous";
-    repo = "linux";
-    rev = "orange-pi-6.2-20230122-1624";
-    hash = "sha256-Yma9LwlMEnP0QkUZpEl+UkTGvOWOMANBoDsmcTrPb1s=";
+    # modDirVersion needs to be x.y.z, will automatically add .0 if needed
+    modDirVersion = if (modDirVersionArg == null) then concatStringsSep "." (take 3 (splitVersion "${version}.0")) + rc else modDirVersionArg;
+
+    # branchVersion needs to be x.y
+    extraMeta.branch = versions.majorMinor version;
+
+    src = fetchFromGitHub {
+      # HOW TO UPDATE:
+      # - `git fetch` from megous' github.
+      # - there should be some new tag, like `orange-pi-6.1-blah`. use that.
+      # - megi publishes release notes as the most recent commit on any stable branch, so just `git log`.
+      # - orange-pi is listed as the "main integration branch".
+      #   - specific branches like `pp` (pinephone) are dev branches, and probably less stable.
+      owner = "megous";
+      repo = "linux";
+      rev = "orange-pi-6.2-20230122-1624";
+      hash = "sha256-Yma9LwlMEnP0QkUZpEl+UkTGvOWOMANBoDsmcTrPb1s=";
+    };
+  } // (args.argsOverride or { });
+  finalArgs = overridenArgs // {
+    kernelPatches = overridenArgs.kernelPatches or [] ++ extraKernelPatches;
   };
-} // (args.argsOverride or { }))
+in buildLinux finalArgs