New comment by 4ricci on void-packages repository

https://github.com/void-linux/void-packages/issues/36895#issuecomment-1112383806

Comment:
> Nonetheless, I think a script to watch for broken links cannot hurt in the future.

It shouldn't be too hard. Something like this will verify the hashes too (but also download a lot of stuff):
```sh
rm -rf hostdir/sources
for i in $(find srcpkgs -name template | cut -d / -f 2); do
        ./xbps-src -I fetch "$i" >/dev/null 2>&1 || echo "$i: broken distfiles"
done
```

This one will just check if the the server returns a successfull status code:
```bash
source common/environment/setup/misc.sh
for pkg in $(find srcpkgs -name template | cut -d / -f 2); do
        unset homepage changelog distfiles
        source srcpkgs/"$pkg"/template 2>/dev/null
        for i in $homepage $changelog $distfiles; do
                if ! curl --silent --location --head --fail -o /dev/null "$i"; then
                        echo "$pkg: url $i is broken"
                fi
        done
done
```