these 6 derivations will be built:
  /nix/store/fdang8j00xx9cd2f94qifmpy1w2lj3fi-source.drv
  /nix/store/09anvss80l5agl15x61f2jgr4cj8qm32-agent-browser-dashboard-0.39.4.drv
  /nix/store/c2g4pdxdygsl4kj6z1j8vy1q3b2yfnqh-agent-browser-0.39.4-vendor-staging.drv
  /nix/store/4pl07qb8bl4dfy6ic1y2w666r25i1d60-agent-browser-0.39.4-vendor.drv
  /nix/store/lrx4pl0sbl53prcccpjy8q9pnacbv81l-agent-browser-0.39.4.drv
  /nix/store/w4x5yij98x4hzpf5208x770j6wkdwrsv-check-agent-browser.drv