these 4 derivations will be built:
  /nix/store/mp5wpdf85kf4zp3d3835m0w36988ybam-source.drv
  /nix/store/xqf0inyv2l68cvhvywjf7hzi0ys02xyi-treehouse-3.1.5-go-modules.drv
  /nix/store/r34s2b932qwyzgmarv80hjj6bjqx0w11-treehouse-3.1.5.drv
  /nix/store/m8j8q699s7pmvrhmw03rlaybzmk1gip3-check-treehouse.drv