these 4 derivations will be built:
  /nix/store/6gcvd59wxd9caf93v7xl0bfr1srzlrjx-bb-app-0.40.0.tgz.drv
  /nix/store/y4pp1rpjhfddj22cjvf5k5kff3my5y37-bb-app-src-with-lock.drv
  /nix/store/6hsm5cj5xi7hx7zhxwndzpnnlb6fk2fy-bb-app-0.40.0-npm-deps.drv
  /nix/store/m62g03z715dkbsfamqrb30qy19yh39kr-bb-app-0.40.0.drv