fix: Flake | use nixfmt=classic to format nix files

hosts/common/core/default.nix

@@ -1,10 +1,4 @@
-{
-  pkgs,
-  inputs,
-  config,
-  lib,
-  ...
-}:
+{ pkgs, inputs, config, lib, ... }:
 
 {
   imports = lib.flatten [
@@ -20,9 +14,7 @@
   hostSpec = {
     username = "shahab";
     handle = "shahab96";
-    email = {
-      user = "shahab@dogar.dev";
-    };
+    email = { user = "shahab@dogar.dev"; };
     userFullName = "Shahab Dogar";
     domain = "rihla";
     networking.ports.tcp.ssh = 22;
@@ -60,12 +52,11 @@
       warn-dirty = false;
       trusted-users = [ "@wheel" ];
 
-      substituters = ["https://hyprland.cachix.org"];
-      trusted-public-keys = ["hyprland.cachix.org-1:a7pgxzMz7+chwVL3/pzj6jIBMioiJM7ypFP8PwtkuGc="];
-      experimental-features = [
-        "nix-command"
-        "flakes"
+      substituters = [ "https://hyprland.cachix.org" ];
+      trusted-public-keys = [
+        "hyprland.cachix.org-1:a7pgxzMz7+chwVL3/pzj6jIBMioiJM7ypFP8PwtkuGc="
       ];
+      experimental-features = [ "nix-command" "flakes" ];
     };
   };
 
@@ -79,9 +70,7 @@
   };
 
   # ========= Sops =========
-  environment.systemPackages = with pkgs; [
-    sops
-  ];
+  environment.systemPackages = with pkgs; [ sops ];
 
   #
   # ========== Localization ==========