From df9ef966a252f2a541b916e085f1e31cb4b97d10 Mon Sep 17 00:00:00 2001
From: Aleksandr Lebedev <alex.lebedev2003@icloud.com>
Date: Wed, 18 Dec 2024 18:11:50 +0100
Subject: [PATCH] tried to turn on impermanence on mac

---
 flake.nix                   |  3 ++-
 nixos/mac-hardware-conf.nix | 16 ++++++++++++++--
 2 files changed, 16 insertions(+), 3 deletions(-)

diff --git a/flake.nix b/flake.nix
index ca7ba14..9c1f553 100644
--- a/flake.nix
+++ b/flake.nix
@@ -97,7 +97,7 @@
 		hostname = "${username}-mac";
 		isLaptop = true;
 		system = arm;
-		useImpermanence = false;
+		useImpermanence = true;
 	    };
 	    inherit username;
 	    inherit first-nixos-install;
@@ -117,6 +117,7 @@
            modules = [
                	./nixos/configuration.nix
 		inputs.apple-silicon-support.nixosModules.default
+		inputs.impermanence.nixosModules.impermanence
 		./nixos/mac-hardware-conf.nix
 		./nixos/macos/configuration.nix
 	   ] ++ general-modules;
diff --git a/nixos/mac-hardware-conf.nix b/nixos/mac-hardware-conf.nix
index be279be..7d5d9ef 100644
--- a/nixos/mac-hardware-conf.nix
+++ b/nixos/mac-hardware-conf.nix
@@ -13,15 +13,27 @@
   boot.kernelModules = [ ];
   boot.extraModulePackages = [ ];
 
-  fileSystems."/" =
+  fileSystems."/" = {
+    device = "none";
+    fsType = "tmpfs";
+    options = [ "size = 3G" "mode = 755" ];
+  };
+  fileSystems."/persist" =
     { device = "/dev/disk/by-label/nixos";
       fsType = "ext4";
+      neededForBoot = true;
     };
-
+  fileSystems."/nix" = {
+    device = "/persist/nix";
+    options = [ "bind" ];
+    depends = [ "/persist" ]
+    neededForBoot = true;
+  };
   fileSystems."/boot" =
     { device = "/dev/disk/by-label/EFI\\x20-\\x20NIXOS";
       fsType = "vfat";
       options = [ "fmask=0022" "dmask=0022" ];
+      neededForBoot = true;
     };
 
   swapDevices = [ ];