these 3 derivations will be built:
  /nix/store/5nih93jgrdqxpkkz9kzp9s6cr1mj95gv-boost-1.78.0.drv
  /nix/store/7dvwbwnjvbfiqhx1bibm1y9wf34x94xh-scons-3.1.2.drv
  /nix/store/z19lk1nygpxvx1prmzayls6izqb1xmin-mongodb-6.0.1.drv