these 2 derivations will be built:
  /nix/store/w5m5nyz2m0pxlwzl3kvfj99zcv65i13b-nixos-test-driver-collation-refresh.drv
  /nix/store/b0za0pz196knvl9gkqcxflxzcq19zxn1-vm-test-run-collation-refresh.drv