Create new systemd-rebuild script to do the updating

pkgs/default.nix

@@ -5,5 +5,6 @@ pkgs: {
   dvt = pkgs.callPackage ./dvt {};
   servo = pkgs.callPackage ./servo {};
   rebuild = pkgs.callPackage ./rebuild {};
+  systemd-rebuild = pkgs.callPackage ./systemd-rebuild {};
   install-nix = pkgs.callPackage ./install-nix {};
 }

pkgs/systemd-rebuild/default.nix

@@ -0,0 +1,25 @@
+{
+  lib,
+  stdenv,
+  writeShellApplication,
+}:
+writeShellApplication
+{
+  name = "systemd-rebuild";
+
+  runtimeInputs = [];
+
+  text = ''
+    # A rebuild script for NixOS for use of the systemd service
+    cd /tmp
+    rm -rf ./rebuild
+    systemd-inhibit git clone https://git.lillianviolet.dev/Lillian-Violet/NixOS-Config.git ./rebuild
+    cd ./rebuild
+    echo "NixOS Rebuilding..."
+    systemd-inhibit sudo nixos-rebuild switch --flake .#
+    cd ..
+    echo "Cleaning up repository in '/tmp/rebuild'..."
+    systemd-inhibit rm -rf ./rebuild
+    echo "NixOS Rebuilt OK!"
+  '';
+}