these 3 derivations will be built:
  /nix/store/phcindgms9czz2f5an5k0n3r4ba37zwq-herdr-plugins.json.drv
  /nix/store/c0gkxghab9la3a8ja8178ng43ap9a12f-activation-script.drv
  /nix/store/c7r3p4dy2wlmqjwrvksc4d9cyv50k25f-home-manager-generation.drv