feat: add cuda setup

flake.nix

@@ -46,6 +46,10 @@
     }@inputs:
     let
       system = "x86_64-linux";
+      pkgs = import nixpkgs {
+        system = "x86_64-linux";
+        config.allowUnfree = true;
+      };
       nix-version = "25.05";
       username = "danny";
       git-config = {
@@ -67,6 +71,7 @@
               nix-version
               username
               git-config
+              pkgs
               ;
           };
         };
@@ -83,6 +88,7 @@
               nix-version
               username
               git-config
+              pkgs
               ;
           };
         };

system/dev/dn-pre7780/default.nix

@@ -24,6 +24,7 @@ in
     ./hardware-configuration.nix
     ./boot.nix
     ../../modules
+    ../../modules/cuda.nix
     (import ../../modules/nvidia.nix {
       nvidia-mode = nvidia-mode;
       intel-bus-id = intel-bus-id;

system/modules/cuda.nix

@@ -0,0 +1,21 @@
+# Here only set the environment for cuda shell env
+# For futher, see flake: https://github.com/DACHXY/python-cuda-flake
+{ lib, ... }:
+{
+  nix = {
+    settings = {
+      substituters = [
+        "https://cuda-maintainers.cachix.org"
+        "https://cache.nixos.org/"
+      ];
+      trusted-public-keys = [
+        "cuda-maintainers.cachix.org-1:0dq3bujKpuEPMCX6U4WylrUDZ9JyUG0VpVZa7CNfq5E="
+      ];
+    };
+  };
+  nixpkgs.config.allowUnfreePredicate =
+    pkg:
+    builtins.elem (lib.getName pkg) [
+      "cuda-merged"
+    ];
+}

system/modules/packages.nix

@@ -7,6 +7,9 @@
 {
   environment.systemPackages =
     (with pkgs; [
+      # Binary cache platform
+      cachix
+
       # gtk theme
       gtk3
       adwaita-icon-theme
@@ -90,7 +93,7 @@
       # Thumbnail
       ffmpegthumbnailer
     ])
-    ++ ([
+    ++ [
       inputs.ghostty.packages.${system}.default
-    ]);
+    ];
 }