#!/bin/bash

# CoreDesktop installed the whole texlive group (22 packages, about 3 GB),
# though nothing in it uses LaTeX. Remove it once. A package from the group
# that something else still needs stays, marked as a dependency, to go with
# that as an orphan.
mapfile -t pkgs < <(pacman -Qgq texlive 2> /dev/null)
(( ${#pkgs[@]} )) || exit 0

sudo pacman -D --asdeps "${pkgs[@]}" > /dev/null || exit

# The ones nothing needs now (-tt counts packages only optionally needed).
# Removing them with -s takes the rest of the group, and the dependencies it
# pulled in, unless something else needs them.
mapfile -t unneeded < <(comm -12 <(printf '%s\n' "${pkgs[@]}" | sort) \
  <(pacman -Qqdtt | sort))
(( ${#unneeded[@]} )) || exit 0

echo "Removing texlive..."
sudo pacman -Rns --noconfirm "${unneeded[@]}"