these 2 derivations will be built:
  /nix/store/byrpkrdy5mk0nibx6dh9s4swzdffhl00-herdr-0.9.5.drv
  /nix/store/v2kd05fdjx7fgzrnw6rykb0cpkdvjwlr-check-herdr.drv
this path will be fetched (36.3 MiB download, 359.7 MiB unpacked):
  /nix/store/60bbrrnby2fjvp88r58hljxzy9g4dgwp-herdr-0.9.5-vendor