Add custom packages dir

flake.nix

@@ -112,5 +112,6 @@
           }];
         };
       };
+      packages.${system}.linuxPackages = import ./pkgs { inherit pkgs; };
     };
 }

pkgs/default.nix

@@ -0,0 +1,5 @@
+# Custom packages, that can be defined similarly to ones from nixpkgs
+# You can build them using 'nix build .#example' or (legacy) 'nix-build -A example'
+
+{ pkgs }: {
+}