Filter updated packages installed using pip (and not pacman)

pip-update.sh

#!/usr/bin/bash

# updated packages
echo "[1] Getting updated packages list"
pip list -o | tail -n +3 | cut -d" " -f1 | tr - _ | sort > updated.txt

# pip-managed packages
echo "[2] Getting packages managed by pip"
find /usr/lib/python3.9/site-packages/ -name INSTALLER | grep --color -oE "site-packages/([^-\/]*?)" | sed "s/site-packages\///g" | sort > installed.txt

# intersect to create a list of updatable packages
echo "[3] Creating the list of updatable packages:"
grep -Fxf updated.txt installed.txt > update-list.txt

cat update-list.txt