pacman manjaro archlinux partial upgrade. It could be usefull when a global upgrade doesn't go write to rollback all and retry some to find the one fail whole system

downgrade-all.sh

# https://linuxconfig.org/how-to-rollback-pacman-updates-in-arch-linux
grep -a upgraded /var/log/pacman.log| grep 2020-11-30 > /tmp/lastupdates.txt                                                              
awk '{print $4}' /tmp/lastupdates.txt > /tmp/lines1
awk '{print $5}' /tmp/lastupdates.txt | sed 's/(/-/g' > /tmp/lines2
paste /tmp/lines1 /tmp/lines2 > /tmp/lines
tr -d "[:blank:]" < /tmp/lines > /tmp/packages
cd /var/cache/pacman/pkg/
for i in $(cat /tmp/packages); do sudo pacman --noconfirm -U "$i"*; done

partial-update,sh

pacman -Qu | grep python | cut -d " " -f 1 | sudo pacman -S -