Without the change build fails to fetch source on `master`
https://hydra.nixos.org/build/248980589:
trying https://github.com/libvibrant/vibrantLinux/archive/2.1.10.tar.gz
% Total % Received % Xferd Average Speed Time Time Time Current
Dload Upload Total Spent Left Speed
0 0 0 0 0 0 0 0 --:--:-- --:--:-- --:--:-- 0
0 14 0 0 0 0 0 0 --:--:-- --:--:-- --:--:-- 0
curl: (22) The requested URL returned error: 404
error: cannot download source from any mirror