save extracted patch list in repo instead of requiring IFD

flake.nix

@@ -1,53 +1,31 @@
 {
   inputs = {
     utils.url = "github:numtide/flake-utils";
-    nixpkgs.url = "nixpkgs/release-23.05";
+    nixpkgs.url = "nixpkgs/release-23.11";
   };
 
-  outputs = { self, nixpkgs, utils, }:
-    utils.lib.eachDefaultSystem
-      (system:
-        let
-          pkgs = (import nixpkgs) {
-            inherit system;
-          };
-          rev = "af2616a252c990a8435bf86cf4788ce435474e24";
-          hash = "sha256-yocxfo7YvBCpHVV/ZhNQssyd3L9jvMFP7tz0cQucLr4=";
-        in
-        rec {
-          # `nix develop`
-          devShell = pkgs.mkShell {
-            nativeBuildInputs = with pkgs; [ jq patch ];
-          };
-        })
-    // {
-      overlay = final: prev: {
-        nvidia-patch = rev: hash:
-          let
-            inherit (nixpkgs.lib) importJSON;
-            extract = final.callPackage ./extract.nix { };
-            jsons = extract rev hash;
-            createPatch = prefix: object: rev: hash: driverPackage:
-              driverPackage.overrideAttrs ({ version
-                                           , preFixup ? ""
-                                           , ...
-                                           }:
-                let
-                  patchList = importJSON "${jsons}/${prefix}patch-list.json";
-                  patch = patchList.${version};
-                in
-                {
-                  preFixup =
-                    preFixup
-                    + ''
-                      sed -i '${patch}' $out/lib/${object}.${version}
-                    '';
-                });
-          in
-          {
-            patch-nvenc = createPatch "" "libnvidia-encode.so" rev hash;
-            patch-fbc = createPatch "fbc-" "libnvidia-fbc.so" rev hash;
-          };
+  outputs = {
+    self,
+    nixpkgs,
+    utils,
+    nvidia-patch,
+  }:
+    utils.lib.eachDefaultSystem (system: let
+      overlays = [
+        (import ./overlay.nix)
+      ];
+      pkgs = (import nixpkgs) {
+        inherit system overlays;
       };
+    in rec {
+      packages = rec {
+        inherit (pkgs) nvidia-patch-extractor nvidia-patch;
+      };
+      devShell = pkgs.mkShell {
+        nativeBuildInputs = with pkgs; [jq patch];
+      };
+    })
+    // {
+      overlays.default = import ./overlay.nix;
     };
 }