Change nix formatter (#206)

the files were formatted with alejandra. the nix community has set a standard for the format and release a new tool.

Reviewed-on: https://codeberg.org/ArkHost/HelixNotes/pulls/206

flake.nix

@@ -6,18 +6,22 @@
     flake-utils.url = "github:numtide/flake-utils";
   };
 
-  outputs = {
+  outputs =
+    {
       self,
       nixpkgs,
       flake-utils,
     }:
-    flake-utils.lib.eachDefaultSystem (system: let
-      pkgs = import nixpkgs {inherit system;};
+    flake-utils.lib.eachDefaultSystem (
+      system:
+      let
+        pkgs = import nixpkgs { inherit system; };
 
         cargoToml = builtins.fromTOML (builtins.readFile ./src-tauri/Cargo.toml);
         pname = cargoToml.package.name;
         version = cargoToml.package.version;
-    in {
+      in
+      {
         packages.default = pkgs.rustPlatform.buildRustPackage {
           inherit pname version;
           src = ./.;
@@ -44,7 +48,8 @@
             wrapGAppsHook3
           ];
 
-        buildInputs = with pkgs;
+          buildInputs =
+            with pkgs;
             lib.optionals stdenv.hostPlatform.isLinux [
               webkitgtk_4_1
               libayatana-appindicator
@@ -71,6 +76,7 @@
           };
         };
 
-      formatter = pkgs.alejandra;
-    });
+        formatter = pkgs.nixfmt;
+      }
+    );
 }