Install nixGL to support running graphical programs on non-nixos.

nix/steam_deck/configuration/flake.lock

@@ -15,10 +15,32 @@
         "type": "github"
       }
     },
+    "home-manager": {
+      "inputs": {
+        "nixpkgs": [
+          "nixpkgs"
+        ]
+      },
+      "locked": {
+        "lastModified": 1739314552,
+        "narHash": "sha256-ggVf2BclyIW3jexc/uvgsgJH4e2cuG6Nyg54NeXgbFI=",
+        "owner": "nix-community",
+        "repo": "home-manager",
+        "rev": "83bd3a26ac0526ae04fa74df46738bb44b89dcdd",
+        "type": "github"
+      },
+      "original": {
+        "owner": "nix-community",
+        "repo": "home-manager",
+        "type": "github"
+      }
+    },
     "nixgl": {
       "inputs": {
         "flake-utils": "flake-utils",
-        "nixpkgs": "nixpkgs"
+        "nixpkgs": [
+          "nixpkgs"
+        ]
       },
       "locked": {
         "lastModified": 1713543440,
@@ -36,26 +58,11 @@
     },
     "nixpkgs": {
       "locked": {
-        "lastModified": 1660551188,
-        "narHash": "sha256-a1LARMMYQ8DPx1BgoI/UN4bXe12hhZkCNqdxNi6uS0g=",
+        "lastModified": 1739138025,
+        "narHash": "sha256-M4ilIfGxzbBZuURokv24aqJTbdjPA9K+DtKUzrJaES4=",
         "owner": "nixos",
         "repo": "nixpkgs",
-        "rev": "441dc5d512153039f19ef198e662e4f3dbb9fd65",
-        "type": "github"
-      },
-      "original": {
-        "owner": "nixos",
-        "repo": "nixpkgs",
-        "type": "github"
-      }
-    },
-    "nixpkgs_2": {
-      "locked": {
-        "lastModified": 1739019272,
-        "narHash": "sha256-7Fu7oazPoYCbDzb9k8D/DdbKrC3aU1zlnc39Y8jy/s8=",
-        "owner": "nixos",
-        "repo": "nixpkgs",
-        "rev": "fa35a3c8e17a3de613240fea68f876e5b4896aec",
+        "rev": "b2243f41e860ac85c0b446eadc6930359b294e79",
         "type": "github"
       },
       "original": {
@@ -67,8 +74,9 @@
     },
     "root": {
       "inputs": {
+        "home-manager": "home-manager",
         "nixgl": "nixgl",
-        "nixpkgs": "nixpkgs_2"
+        "nixpkgs": "nixpkgs"
       }
     }
   },

nix/steam_deck/configuration/flake.nix

@@ -3,7 +3,8 @@
 
   inputs = {
     nixpkgs.url = "github:nixos/nixpkgs/nixpkgs-unstable";
-    # nixgl.url = "github:nix-community/nixGL";
+    nixgl.url = "github:nix-community/nixGL";
+    nixgl.inputs.nixpkgs.follows = "nixpkgs";
     home-manager = {
       url = "github:nix-community/home-manager";
       inputs.nixpkgs.follows = "nixpkgs";
@@ -12,20 +13,29 @@
   outputs =
     {
       nixpkgs,
-      # nixgl,
+      nixgl,
       home-manager,
       ...
     }:
     let
       system = "x86_64-linux";
-      pkgs = nixpkgs.legacyPackages.${system};
+      pkgs = import nixpkgs {
+        inherit system;
+        overlays = [ nixgl.overlay ];
+      };
     in
+    # pkgs = nixpkgs.legacyPackages.${system};
     {
       defaultPackage.${system} = home-manager.defaultPackage.${system};
       homeConfigurations."deck" = home-manager.lib.homeManagerConfiguration {
         inherit pkgs;
 
-        modules = [ ./home.nix ];
+        extraSpecialArgs = { inherit nixgl; };
+
+        modules = [
+          ./home.nix
+          { nixpkgs.overlays = [ nixgl.overlay ]; }
+        ];
       };
     };
 

nix/steam_deck/configuration/home.nix

@@ -0,0 +1,36 @@
+# TODO: Optimize for znver2
+{
+  config,
+  pkgs,
+  nixgl,
+  ...
+}:
+{
+  home.username = "deck";
+  home.homeDirectory = "/home/deck";
+  home.stateVersion = "24.11";
+
+  programs.home-manager.enable = true;
+
+  # enable flakes
+  nix = {
+    package = pkgs.nix;
+    settings.experimental-features = [
+      "nix-command"
+      "flakes"
+    ];
+  };
+
+  home.packages = with pkgs; [
+    steam-rom-manager
+    pkgs.nixgl.nixGLIntel
+    (pkgs.nixgl.nixGLCommon pkgs.nixgl.nixGLIntel)
+    pkgs.nixgl.nixVulkanIntel
+  ];
+
+  # This would keep build-time dependencies so I can rebuild while offline.
+  # nix.settings = {
+  #   keep-outputs = true;
+  #   keep-derivations = true;
+  # };
+}