use unstable for goto

flake.nix

@@ -1,8 +1,8 @@
 {
   inputs = {
     nixpkgs.url = "nixpkgs/nixos-23.05";
+    nixpkgs-unstable.url = "nixpkgs/nixos-unstable";
     mozilla.url = "github:mozilla/nixpkgs-mozilla";
-    # hyprland.url = "github:hyprwm/Hyprland";
     supercolor.url = "github:zoe-bat/supercolor";
     kaokao.url = "github:zoe-bat/kaokao";
     i3layouts-rofi.url = "github:zoe-bat/i3layouts-rofi";
@@ -12,13 +12,22 @@
     };
   };
   outputs = { self, nixpkgs, home-manager, supercolor, i3layouts-rofi, kaokao
-    , mozilla }@inputs:
-    let system = "x86_64-linux";
+    , mozilla, nixpkgs-unstable }@inputs:
+    let
+      system = "x86_64-linux";
+      overlay-unstable = final: prev: {
+        unstable = import nixpkgs-unstable {
+          inherit system;
+          config.allowUnfree = true;
+        };
+      };
     in {
       nixosConfigurations.bat = nixpkgs.lib.nixosSystem {
-        system = system;
+        inherit system;
         modules = [
-          ({ config, pkgs, ... }: { nixpkgs.overlays = [ mozilla.overlays.rust ]; })
+          ({ config, pkgs, ... }: {
+            nixpkgs.overlays = [ mozilla.overlays.rust overlay-unstable ];
+          })
           ./configuration.nix
         ];
         specialArgs = inputs;

user.nix

@@ -1,4 +1,4 @@
-{ pkgs, supercolor, kaokao, i3layouts-rofi, ... }:
+{ pkgs, supercolor, nixpkgs-unstable, kaokao, i3layouts-rofi, ... }:
 let
   my-python-packages = p: with p; [ pytest i3ipc python-lsp-server ];
   rust = pkgs.latest.rustChannels.stable.rust.override {
@@ -140,6 +140,9 @@ in {
       vscode
       mdbook
 
+      ## games
+      unstable.godot_4
+
       ## nix
       any-nix-shell
       nixfmt
@@ -180,8 +183,6 @@ in {
       ## 3d
       blender
       blockbench-electron
-      ## godot
-      godot_4
       ## arduino
       arduino
       ## tilemap editor