these 2 derivations will be built:
  /nix/store/65s2797nwywikc5nmspq5vr3djrh23la-source.drv
  /nix/store/g616jy6qcpbp7v34w8vnj0fyw9zv6704-ats-acc-unstable-2018-10-21.drv
this path will be fetched (1.1 MiB download, 9.2 MiB unpacked):
  /nix/store/jzrcjbix05pcml1478jhvzpviv0byc40-ats2-0.4.2