Add backup scripts to version control

hosts/palladium/backup-scripts.nix

@@ -0,0 +1,35 @@
+{ pkgs, ... }:
+
+let
+  cb-mount = pkgs.writeScriptBin "cb-mount" ''
+  #!${pkgs.bash}/bin/bash
+
+  DEVICE=/dev/disk/by-path/pci-0000:00:12.0-ata-2-part1
+
+  cryptsetup luksOpen ''${DEVICE} external-drive
+  mkdir -p /mnt/external-drive
+  mount /dev/mapper/external-drive /mnt/external-drive
+  '';
+
+  cb-sync = pkgs.writeScriptBin "cb-sync" ''
+  #!${pkgs.bash}/bin/bash
+
+  # Check, if the something is mounted in our sycdir
+  if grep -qs '/mnt/external-drive' /proc/mounts
+  then
+    rsync -rltD '/mnt/palladium/alpha.0/clerie-backup/clerie-backup-replication/' '/mnt/external-drive/clerie-backup'
+  else
+    echo "Please plug in a backup drive and mount it using cb-mount"
+  fi
+  '';
+
+  cb-unmount = pkgs.writeScriptBin "cb-unmount" ''
+  #!${pkgs.bash}/bin/bash
+
+  umount /mnt/external-drive
+  cryptsetup luksClose external-drive
+  '';
+
+in {
+  environment.systemPackages = with pkgs; [ pkgs.cryptsetup pkgs.rsync cb-mount cb-sync cb-unmount ];
+}