Fixes https://github.com/NixOS/nixos-org-configurations/issues/129.
NW4AWDEZSFIDI7M4E6372USU3NF4KDDYHLVADPU5LRF7TIALDQSAC
YVFKZFAP7JQWQ5ROYNEDXTLGWNZ2ZJ6I5OAYLWBMQBWOQE5XQAVQC
5JMO43B45WLRDAZJ4QIDFHSI7BVESV7CJ4BYXPJ5Q3MILZ23SECAC
BYVRA54QBKHLFOPIRBJKZZI7JYBYHSOK7MIA3TUZTALZQJGG3G7QC
5AIYUMTBY6TFQTBRP3MJ2PYWUMRF57I77NIVWYE74UMEVQMBWZVQC
4DHGJ2FLM2QZTDKOYCXJQV4EDLRPOAOT7P7RGACCM5NFRRDX3AZAC
readString(from); // deriver
auto deriver = readString(from); // deriver
if (deriver != "") info.deriver = localStore->parseStorePath(deriver);
if (deriver != "")
info.deriver = localStore->parseStorePath(deriver);