feat: switch to btrfs

systems/x86_64-linux/earth/default.nix

@@ -25,6 +25,31 @@
     options = "--delete-older-than 1d";
   };
 
+  boot.initrd.postResumeCommands = lib.mkAfter ''
+    mkdir /btrfs_tmp
+    mount /dev/root_vg/root /btrfs_tmp
+    if [[ -e /btrfs_tmp/root ]]; then
+      mkdir -p /btrfs_tmp/old_roots
+      timestamp=$(date --date="@$(stat -c %Y /btrfs_tmp/root)" "+%Y-%m-%-d_%H:%M:%S")
+      mv /btrfs_tmp/root "/btrfs_tmp/old_roots/$timestamp"
+    fi
+
+    delete_subvolume_recursively() {
+      IFS=$'\n'
+      for i in $(btrfs subvolume list -o "$1" | cut -f 9- -d ' '); do
+        delete_subvolume_recursively "/btrfs_tmp/$i"
+      done
+      btrfs subvolume delete "$1"
+    }
+
+    for i in $(find /btrfs_tmp/old_roots/ -maxdepth 1 -mtime +30); do
+      delete_subvolume_recursively "$i"
+    done
+
+    btrfs subvolume create /btrfs_tmp/root
+    umount /btrfs_tmp
+  '';
+
   hardware.audio.enable = true;
   hardware.nvidia.enable = true;
   hardware.keyboard.qmk.enable = true;
@@ -209,6 +234,7 @@
         pkgs.winetricks
       ];
     })
+    pkgs.vulkan-hdr-layer-kwin6
     pkgs.bottles
     pkgs.file-roller
     pkgs.podman-tui