#!/bin/bash

_clean_packages(){
    local _leave_these_packages="base\nbase-devel\ncachyos-keyring\ncachyos-mirrorlist\ncachyos-v3-mirrorlist\ncachyos-hello\ngrub\nefibootmgr\n"
    local _packages_to_remove=($(comm -23 <(pacman -Qqt | sort) <({ pacman -Qqg base-devel; printf $_leave_these_packages; } | sort -u)))
    local xx
    # @ does one by one to avoid errors in the entire process
    # * can be used to treat all packages in one command
    for xx in ${_packages_to_remove[@]}; do pacman -Rsc $xx --noconfirm; done

    rm /etc/sddm.conf
}

_clean_packages