these 5 derivations will be built:
  /nix/store/2j2vp27qbmc884gi85hf2lq1v4n6nrvm-bb-app-0.49.0.tgz.drv
  /nix/store/fq3vyflg4my4ncg8myb1mkm32kblk9rc-bb-app-src-with-lock.drv
  /nix/store/xgi4j2x3n7i3j2kyl8bqffc10vdwzsji-bb-app-0.49.0-npm-deps.drv
  /nix/store/v5l3wphm79rzbvjlpvymglgjdk0mk9wz-bb-app-0.49.0.drv
  /nix/store/s381qp67gy4864hzcdx2bp9ik9n2b0jy-check-bb-app.drv