Rearrange the kernels to make them self-defining

microsoft/surface/kernel/default.nix

@@ -1,33 +1,16 @@
 { config, lib, pkgs, ... }:
 
-# To test the kernel build:
-# nix-build -E "with import <nixpkgs> {}; (pkgs.callPackage ./. {}).boot.kernelPackages.kernel"
-
 let
-  inherit (lib) kernel recurseIntoAttrs;
-  inherit (pkgs) buildLinux linuxPackagesFor;
-  repos = pkgs.callPackage ../repos.nix {};
-
-  linuxPackage =
-    { version,
-      modDirVersion ? version,
-      branch,
-      src,
-      kernelPatches ? [],
-      ...
-    }: let
-      buildLinux' = buildLinux {
-        inherit version src kernelPatches;
-        modDirVersion = version;
-        extraMeta.branch = branch;
-      };
-      linuxPackagesFor' = linuxPackagesFor buildLinux';
-    in recurseIntoAttrs linuxPackagesFor';
-
-  linux-5_19_17 = linuxPackage (
-    pkgs.callPackage ./linux-5.19.17.nix { inherit repos; }
-  );
+  inherit (lib) mkOption types;
 
 in {
-  boot.kernelPackages = linux-5_19_17;
+  imports = [
+    ./linux-5.19.17
+  ];
+
+  options.microsoft-surface.kernel-version = mkOption {
+    description = "Kernel Version to use (patched for MS Surface)";
+    type = types.enum [  ];
+    # default = "5.19.17";
+  };
 }