these 3 derivations will be built:
  /nix/store/v7xii61i454yj8vplvpcz70vc617is20-source.drv
  /nix/store/wzvl5i57p3sf9v1p344ip0h1fiapd7f9-gno-2.8.5.drv
  /nix/store/vkv4hy3n5mrv78fyyh9pq4c5pl889kkw-check-gno.drv