updated

slides/schema.md

@@ -1,69 +0,0 @@
-```txt
-/nix            /                       /persist
-            +------------------------+
-  /store/x -|-> /var/x               |
-            |   /var/lib/bluetooth <-|-   /var/lib/bluetooth
-  /store/y -|-> /bin/y               |
-            |   /home/admin/.local <-|-   /home/admin/.local
-  /store/z -|-> /etc/z               |
-            +------------------------+
-```
-
-```nix
-{...}: {
-  boot.initrd.postDeviceCommands = lib.mkAfter ''
-    mkdir /btrfs_tmp
-    mount /dev/mapper/crypted /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
-  '';
-}
-```
-
-```nix
-{
-  inputs = {
-    impermanence = {
-      url = "github:nix-community/impermanence";
-    };
-  };
-
-  outputs = {self, ...} @ inputs: let
-    system = "x86_64-linux";
-    pkgs = inputs.nixpkgs.legacyPackages.${system};
-  in {
-    nixosConfigurations = {
-      default = inputs.nixpkgs.lib.nixosSystem {
-        inherit system;
-
-        modules = [
-          inputs.impermanence.nixosModules.impermanence
-          ...
-        ];
-      };
-    };
-  }
-}
-```
-
-```txt
-
-```