Show white bar on both monitors

flake.nix

@@ -1,5 +1,6 @@
 {
   description = "My rust development shell";
+
   inputs = {
     nixpkgs.url = "github:nixos/nixpkgs?ref=nixos-unstable";
     rust-overlay = {
@@ -7,6 +8,7 @@
       inputs.nixpkgs.follows = "nixpkgs";
     };
   };
+
   outputs = {nixpkgs, ...} @ inputs: let
     system = "x86_64-linux";
     overlays = [(import inputs.rust-overlay)];
@@ -18,29 +20,27 @@
       extensions = ["rust-analyzer" "rust-src"];
     };
 
-    rustPlatform = pkgs.makeRustPlatform {
-      cargo = rustToolchain;
-      rustc = rustToolchain;
-    };
+    runtimeLibs = with pkgs; [
+      wayland
+      libxkbcommon
+      glib
+      vulkan-loader
+      mesa
+      libGL
+    ];
   in {
-    packages."${system}" = {
-      default = rustPlatform.buildRustPackage {
-        pname = "wayland_panel";
-        version = "0.1.0";
-        src = ./.;
-        cargoLock.lockFile = ./Cargo.lock;
-      };
-    };
-
-    devShells."${system}" = {
-      default = pkgs.mkShell {
-        buildInputs = with pkgs; [
+    devShells."${system}".default = pkgs.mkShell {
+      buildInputs = with pkgs;
+        [
           gcc
           gnumake
           rustToolchain
           evcxr
-        ];
-      };
+        ]
+        ++ runtimeLibs;
+
+      LD_LIBRARY_PATH = pkgs.lib.makeLibraryPath runtimeLibs;
+      VK_ICD_FILENAMES = "${pkgs.mesa}/share/vulkan/icd.d/intel_icd.x86_64.json";
     };
   };
 }