Avoid package manager exit 1

The script will now skip the installation of the dependencies if they are already installed to avoid the script exiting early.

zsh.sh

@@ -26,8 +26,9 @@ echo "This script will backup your current zsh config if it exists "
 # Enable exit on error
 set -eu
 
-# Install prerequisites
+# Install prerequisites if installed skips
 
+if ! command -v zsh >/dev/null && command -v git >/dev/null && command -v curl >/dev/null && command -v fzf >/dev/null; then
   if command -v pacman >/dev/null; then
     echo "pacman detected. Installing prerequisites"
     sudo pacman -S zsh git curl fzf --noconfirm
@@ -37,6 +38,7 @@ if command -v apt >/dev/null; then
     echo "apt detected. Installing prerequisites"
     sudo apt install git curl zsh fzf -y
   fi
+fi
 
 zsh=$(which zsh)