these 5 derivations will be built:
  /nix/store/969p5vxgsp4g1kfbd3x69r1v3iw35n16-source.drv
  /nix/store/m96fxdpn9327src56700nh0nkwfclzj4-vendor-registry.drv
  /nix/store/xbxngrbinzii7c1r129b5al8s0dy4an4-vendor-cargo-deps.drv
  /nix/store/8db9smcs2znhwl2yhh981nmmb792q8p4-harmonia-deps-3.2.0.drv
  /nix/store/s5fdkm865r1fmm7jkpp8rsl1rl0khf4l-harmonia-3.2.0.drv