Add possibility to run program from nix shell

.envrc

@@ -1 +1 @@
-use flake
+use flake --impure

flake.lock

@@ -18,6 +18,29 @@
         "type": "github"
       }
     },
+    "nixgl": {
+      "inputs": {
+        "flake-utils": [
+          "flake-utils"
+        ],
+        "nixpkgs": [
+          "nixpkgs"
+        ]
+      },
+      "locked": {
+        "lastModified": 1713543440,
+        "narHash": "sha256-lnzZQYG0+EXl/6NkGpyIz+FEOc/DSEG57AP1VsdeNrM=",
+        "owner": "nix-community",
+        "repo": "nixGL",
+        "rev": "310f8e49a149e4c9ea52f1adf70cdc768ec53f8a",
+        "type": "github"
+      },
+      "original": {
+        "owner": "nix-community",
+        "repo": "nixGL",
+        "type": "github"
+      }
+    },
     "nixpkgs": {
       "locked": {
         "lastModified": 1730831018,
@@ -37,6 +60,7 @@
     "root": {
       "inputs": {
         "flake-utils": "flake-utils",
+        "nixgl": "nixgl",
         "nixpkgs": "nixpkgs",
         "rust-overlay": "rust-overlay"
       }

flake.nix

@@ -8,14 +8,20 @@
       url = "github:oxalica/rust-overlay";
       inputs.nixpkgs.follows = "nixpkgs";
     };
+    nixgl = {
+      url = "github:nix-community/nixGL";
+      inputs.nixpkgs.follows = "nixpkgs";
+      inputs.flake-utils.follows = "flake-utils";
+    };
   };
 
-  outputs = { self, nixpkgs, flake-utils, rust-overlay }:
+  outputs = { self, nixpkgs, flake-utils, rust-overlay, nixgl }:
     flake-utils.lib.eachSystem flake-utils.lib.allSystems (system:
       let
-        overlays = [ (import rust-overlay) ];
+        overlays = [ (import rust-overlay) nixgl.overlay ];
         pkgs = import nixpkgs {
           inherit system overlays;
+          config.allowUnfree = true;
         };
         rust = pkgs.rust-bin.fromRustupToolchainFile ./rust-toolchain.toml;
 
@@ -24,7 +30,7 @@
           cargo = rust;
         });
 
-        libs = with pkgs; [ vulkan-headers vulkan-loader ]
+        libs = with pkgs; [ vulkan-headers vulkan-loader vulkan-validation-layers ]
           ++ pkgs.lib.optionals pkgs.stdenv.hostPlatform.isLinux (with pkgs; [ libxkbcommon wayland libGL ])
           ++ pkgs.lib.optionals pkgs.stdenv.hostPlatform.isDarwin (with pkgs; [ darwin.apple_sdk.frameworks.SystemConfiguration ]);
       in
@@ -36,7 +42,9 @@
               pkg-config
             ];
 
-            buildInputs = libs;
+            buildInputs = libs ++ [
+              pkgs.nixgl.auto.nixVulkanNvidia pkgs.nixgl.nixVulkanIntel
+            ];
 
             LD_LIBRARY_PATH = pkgs.lib.makeLibraryPath (with pkgs; [ libxkbcommon wayland libGL ]);
           };