Add snapper for btrfs snapshot management

README.md

@@ -39,6 +39,7 @@ nix develop -c /etc/nixos/git/docs/setup.sh
   * Container running piaware software
 
 # To Do List
+* [x] Set up Snapper - [Link](https://search.nixos.org/options?channel=23.11&size=50&sort=relevance&type=packages&query=snapper)
 * [ ] Try Attic - A self-hosted Nix Binary Cache server - [Link](https://discourse.nixos.org/t/introducing-attic-a-self-hostable-nix-binary-cache-server/24343)
 * [ ] Try [compose2nix](https://github.com/aksiksi/compose2nix) - Docker Compose to Nix converter
 * [ ] Make a dashboard for all Nixified devices (online status)

nixos/common/services/snapper.nix

@@ -0,0 +1,9 @@
+{ pkgs, desktop, ... }: {
+    environment.systemPackages = [ ]  ++ lib.optional (builtins.isString desktop) pkgs.snapper-gui;
+
+    services.snapper = {
+        snapshotRootOnBoot = true;
+        cleanupInterval = "1d";
+        snapshotInterval = "1h";
+    };
+}

nixos/hosts/framework-server/disks.nix

@@ -1,4 +1,6 @@
 {
+  imports = [ ../../common/services/snapper.nix ];
+  
   services.btrfs.autoScrub.enable = true;
   services.btrfs.autoScrub.interval = "weekly";
 

nixos/hosts/nixos-desktop/disks.nix

@@ -1,6 +1,6 @@
 {
-  boot.loader.grub.device = "/dev/nvme0n1";
+  imports = [ ../../common/services/snapper.nix ];
-  boot.initrd.luks.devices."ROOT".device = "/dev/nvme0n1p2";
+  
   services.btrfs.autoScrub.enable = true;
   services.btrfs.autoScrub.interval = "weekly";
 

nixos/hosts/nixos-framework/disks.nix

@@ -1,4 +1,6 @@
 {
+  imports = [ ../../common/services/snapper.nix ];
+  
   services.btrfs.autoScrub.enable = true;
   services.btrfs.autoScrub.interval = "weekly";