#!/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 -Qq | sort) <({ pacman -Qqg base-devel; printf "%s" $_leave_these_packages; } | sort -u))")
    local xx
    # @ does one by one to avoid errors in the entire process
    # * can be used to treat all packages in one command
    for xx in "${_packages_to_remove[@]}"; do pacman -Rsc "$xx" --noconfirm; done

    rm /etc/sddm.conf || true
}

_clean_packages