these 4 derivations will be built:
  /nix/store/1apy08689iqzfl0k6cc9irzmxla8rvnh-source.drv
  /nix/store/lc6q63lk0v4pzirgskgf2gxj5cbgknlz-treehouse-3.1.5-go-modules.drv
  /nix/store/5qxyc6pzkxzd8wyx0fvbcp7sczm4xys8-treehouse-3.1.5.drv
  /nix/store/hx1kl5nyc8c5ap33ddkljlprfmwxf5rx-check-treehouse.drv