Dear maintainer,I had to update this package for Kali Linux. I updated it to latest upstream version 1.4, and cherry-picked an upstream patch to fix this FTBFS.
You can find this package at https://gitlab.com/kalilinux/packages/gtkhash. Please feel free to cherry-pick all the commits you need from there.
Alternatively, if you're not willing to maintain this package anymore, I'm OK to maintain it.
Cheers, -- Arnaud Rebillout