refactor(bar): restructure panel window and corners

flake.nix

@@ -2,30 +2,54 @@
   description = "tux's widgets for wayland";
 
   inputs = {
-    nixpkgs.url = "github:nixos/nixpkgs?ref=nixos-unstable";
+    nixpkgs.url = "github:NixOS/nixpkgs/nixos-unstable";
 
     quickshell = {
       url = "git+https://git.outfoxxed.me/outfoxxed/quickshell";
       inputs.nixpkgs.follows = "nixpkgs";
     };
+
+    treefmt-nix = {
+      url = "github:numtide/treefmt-nix";
+      inputs.nixpkgs.follows = "nixpkgs";
+    };
   };
 
-  outputs = {
-    self,
-    nixpkgs,
-    quickshell,
-  }: let
-    system = "x86_64-linux";
-    pkgs = nixpkgs.legacyPackages.${system};
-  in {
-    devShells.${system} = {
-      default = pkgs.mkShell {
-        buildInputs = [
-          quickshell.packages.${system}.default
-          pkgs.kdePackages.qtdeclarative
-          pkgs.kdePackages.qt5compat
+  outputs =
+    {
+      self,
+      nixpkgs,
+      quickshell,
+      treefmt-nix,
+    }:
+    let
+      system = "x86_64-linux";
+      pkgs = nixpkgs.legacyPackages.${system};
+
+      quickshellWithModules = quickshell.packages.${system}.default.withModules [
+        pkgs.qt6.qtbase
+        pkgs.qt6.qtdeclarative
+        pkgs.qt6.qtmultimedia
+        pkgs.qt6.qttranslations
+      ];
+
+      treefmtEval = treefmt-nix.lib.evalModule pkgs {
+        projectRootFile = "flake.nix";
+
+        programs = {
+          nixfmt.enable = true;
+        };
+      };
+    in
+    {
+      formatter.${system} = treefmtEval.config.build.wrapper;
+
+      devShells.${system}.default = pkgs.mkShell {
+        packages = [
+          quickshellWithModules
+          pkgs.cava
+          pkgs.wallust
         ];
       };
     };
-  };
 }