added a bunch of nixos modules

modules/system/boot.nix

@@ -0,0 +1,7 @@
+{ ... }: {
+  flake.modules.nixos.boot = {
+    boot.loader.systemd-boot.enable = true;
+    boot.loader.efi.canTouchEfiVariables = true;
+    boot.kernelModules = [ "kvm-amd" ];
+  };
+}

modules/system/locale.nix

@@ -0,0 +1,20 @@
+{ ... }: {
+  flake.modules.nixos.locale = {
+    time.timeZone = "Europe/Vienna";
+
+    i18n.defaultLocale = "en_US.UTF-8";
+
+    i18n.extraLocaleSettings = {
+      LC_ADDRESS = "de_AT.UTF-8";
+      LC_IDENTIFICATION = "de_AT.UTF-8";
+      LC_MEASUREMENT = "de_AT.UTF-8";
+      LC_MONETARY = "de_AT.UTF-8";
+      LC_NAME = "de_AT.UTF-8";
+      LC_NUMERIC = "de_AT.UTF-8";
+      LC_PAPER = "de_AT.UTF-8";
+      LC_TELEPHONE = "de_AT.UTF-8";
+      LC_TIME = "de_AT.UTF-8";
+    };
+
+  };
+}

modules/system/stystem.nix

@@ -0,0 +1,8 @@
+{ self, ... }: {
+  flake.modules.nixos.system = {
+    imports = [
+      self.modules.nixos.boot
+      self.modules.nixos.locale
+    ];
+  };
+}