Simplify getting dependencies

arch_update

@@ -7,22 +7,16 @@ BACKUP_LIMIT=3
 
 # Check dependencies
 echo -e '\nInstalling dependencies ...' >&2
-! which curl >/dev/null 2>&1 && sudo pacman -Syu curl
-! which git >/dev/null 2>&1 && sudo pacman -Syu git
-if ! which vim >/dev/null 2>&1; then
-    sudo pacman -Syu neovim
-    sudo ln -s /usr/bin/nvim /usr/local/bin/vim
-fi
-! which rankmirrors >/dev/null 2>&1 && sudo pacman -Syu pacman-contrib
 if ! which yay >/dev/null 2>&1; then
-    sudo pacman -Syu
     git clone https://aur.archlinux.org/yay.git
     cd yay
     makepkg -cirs
     cd ..
     rm -fr yay
 fi
-! which yaycache >/dev/null 2>&1 && yay -Syu yaycache
+yay -Syu --needed curl git neovim pacman-contrib yaycache
+[ ! -e /usr/local/bin/vim ] && sudo ln -s /usr/bin/nvim /usr/local/bin/vim
+
 # Backup system
 if which btrfs >/dev/null; then
     yay -Syu --needed snapper