these 4 derivations will be built:
  /nix/store/aiw6h5yki045hv0h994lb4ha9r314c5y-source.drv
  /nix/store/kpz06pdjz7kcm4qny3rd4pyhh20zn204-treehouse-3.1.8-go-modules.drv
  /nix/store/dn61rj81fb9lrn66adv6qvkq3m6jbpr4-treehouse-3.1.8.drv
  /nix/store/0dmy3pczrqj38azvgx3mlrwd3n7md6rm-check-treehouse.drv