(Arch Linux) Small demo to play with ideas surrounding how linked library updates might be traced back to packages needing to be rebuilt

lddtest.sh

#!/usr/bin/env bash

function recursive_ldd() {
    for file in "$(find . -type f -exec file '{}' \; | grep 'dynamically linked')"; do sed 's|:.*||' <<< "$file"; done
}

function find_libs() {
    ldd $(recursive_ldd) \
        | sed '/^[^ ]*:$/d;s|^ *||' \
        | grep -o -e '/[^ ]*' \
        | sort -u
}

function find_pkgs() {
    for library in $(find_libs); do
        pacman -Qo "$library" \
            | sed 's|^.*owned by ||;s| .*$||'
    done | sort -u
}

find_pkgs