these 5 derivations will be built:
  /nix/store/bagfvlb6v6mkkbzha4z92cl76vg3rc71-bb-app-0.48.1.tgz.drv
  /nix/store/lia9l1sk6azi5hn9nx59gi8snp7xh7xs-bb-app-src-with-lock.drv
  /nix/store/n4g1v7wl7g8q74v71vzxsivzabnf3ihf-bb-app-0.48.1-npm-deps.drv
  /nix/store/2xnvraqjiiny0348h5iarrzf06d5kxs2-bb-app-0.48.1.drv
  /nix/store/gc19jz0f5kgjl4f7xi8xjr0p443rm875-check-bb-app.drv