fix

modules/nixos/tmpsys.nix

@@ -4,11 +4,6 @@
   imports = [
     inputs.impermanence.nixosModules.impermanence
   ];
-
-  # 系统启动时确保持久化目录存在
-  system.activationScripts.persistent-dirs.text = ''
-    mkdir -p /nix/persistent
-  '';
   
   # 启用 tmpfs 作为根文件系统
   fileSystems."/" = lib.mkForce {
@@ -21,7 +16,7 @@
   fileSystems."/nix" = lib.mkForce {
     device = "/dev/disk/by-label/nixos";  # 需要根据实际情况修改
     fsType = "btrfs";
-        options = [ "bind" ];
+    options = [ "compress-force=zstd" ];
 
   };