these 4 derivations will be built:
  /nix/store/g7i8vc11qz8qi6xy2x65jirmacx6yqr5-source.drv
  /nix/store/prn3yca1a42hn5n996wmqc9azf2xhwah-aven-0.1.29-vendor-staging.drv
  /nix/store/fnfswn9wkz16v11c3jdx45cy9dhhnicm-aven-0.1.29-vendor.drv
  /nix/store/apq752gvyxh01g9szii0bzqjflcs8whi-aven-0.1.29.drv