diff --git a/flake.nix b/flake.nix
index 27a40de..ddd16ec 100644
--- a/flake.nix
+++ b/flake.nix
@@ -78,6 +78,7 @@
 				gzip
 				inject
 				sudo
+				tmux
 				xonsh
 			];
 		}));
diff --git a/overlays/inject.nix b/overlays/inject.nix
index b59111c..20bf856 100644
--- a/overlays/inject.nix
+++ b/overlays/inject.nix
@@ -1,3 +1,25 @@
 { pkgs, ... }:
 
-pkgs.writeShellScriptBin "inject-nixos-config" (builtins.readFile ./inject.sh)
+pkgs.writeShellScriptBin "inject-nixos-config" ''
+hostname="''${1}"
+if [ -n "''${hostname}"]; then
+	echo "You must provide a hostname";
+	exit 1;
+fi
+
+${pkgs.curl}/bin/curl -L -o "''${HOME}/nixos-config.tar.gz" https://github.com/greg-hellings/nixos-config/archive/refs/heads/main.tar.gz
+${pkgs.gnutar}/bin/tar xaf "''${HOME}/nixos-config.tar.gz" -C "''${HOME}"
+${pkgs.sudo}/bin/sudo mv /etc/nixos /etc/nixos.bk
+${pkgs.sudo}/bin/sudo mv "''${HOME}/nixos-config-main/" /etc/nixos
+mkdir -p "/etc/nixos/hosts/''${hostname}"
+
+# Prepares everything for the flake usage
+cp /etc/nixos.bk/configuration.nix "/etc/nixos/hosts/''${hostname}/default.nix"
+cp /etc/nixos.bk/hardware-configuration.nix "/etc/nixos/hosts/''${hostname}/hardware-configuration.nix"
+
+# Prepares it for injecting the use case into the flake usage
+cp /etc/nixos.bk/hardware-configuration.nix /etc/nixos
+
+echo "Now you should be able to just run 'nixos-rebuild switch' to enable the flake functionality"
+echo "After that and adding the entry to the flake, run 'nixos-rebuild boot --flake '.#''${hostname}' and reboot"
+''
diff --git a/overlays/inject.sh b/overlays/inject.sh
deleted file mode 100755
index 95edf06..0000000
--- a/overlays/inject.sh
+++ /dev/null
@@ -1,24 +0,0 @@
-#!/usr/bin/env bash
-
-hostname="${1}"
-if [ -n "${hostname}"]; then
-	echo "You must provide a hostname";
-	exit 1;
-fi
-
-curl -L -o "${HOME}/nixos-config.tar.gz" https://github.com/greg-hellings/nixos-config/archive/refs/heads/main.tar.gz
-tar xaf "${HOME}/nixos-config.tar.gz" -C "${HOME}"
-sudo mv /etc/nixos /etc/nixos.bk
-sudo mv "${HOME}/nixos-config-main/" /etc/nixos
-mkdir -p "/etc/nixos/hosts/${hostname}"
-
-# Prepares everything for the flake usage
-cp /etc/nixos.bk/configuration.nix "/etc/nixos/hosts/${hostname}/default.nix"
-cp /etc/nixos.bk/hardware-configuration.nix "/etc/nixos/hosts/${hostname}/hardware-configuration.nix"
-
-# Prepares it for injecting the use case into the flake usage
-cp /etc/nixos.bk/hardware-configuration.nix /etc/nixos
-
-echo "Now you should be able to just run 'nixos-rebuild switch' to enable the flake functionality"
-echo "After that and adding the entry to the flake, run 'nixos-rebuild boot --flake '.#${hostname}' and reboot"
-