these 4 derivations will be built:
  /nix/store/jmf0vka6xy2jf6w769dhiz6xaixmrbfb-pi-src-with-lock.drv
  /nix/store/453lizkhaixvsr7lrmq7b908khy7w7c4-pi-1.0.2-npm-deps.drv
  /nix/store/zbph51jy1kngiln4bia5l10153ylprgs-pi-1.0.2.drv
  /nix/store/kymwcn481ll1hknyadkzx59279vbvdm4-check-pi.drv