these 3 derivations will be built:
  /nix/store/aghah97fm8wpjcwyy82wjzgckqdywzwk-freebuff-linux-x64.tar.gz.drv
  /nix/store/87ia8g78azndc74yqg354f8nis56r00a-freebuff-0.2.29.drv
  /nix/store/ihljqv9fad50qpqxwqyqb20gwn95bmvh-check-freebuff.drv