these 3 derivations will be built:
  /nix/store/4bainb9fsyayj65svbqy988fbv225378-source.drv
  /nix/store/nkls9r4svjl7gjz2v9zpis9p9dj124w1-drone-runner-exec-unstable-2020-04-19-go-modules.drv
  /nix/store/n5k72l1dispmhpcdhhbhfnq57w5gmp76-drone-runner-exec-unstable-2020-04-19.drv