these 3 derivations will be built:
  /nix/store/2w0n1lbhcw1dk3b2fzk3inys88dc32g4-home-manager-path.drv
  /nix/store/1nxmw79sgk2pd7wrgzx9dnfwl5fk1q4l-activation-script.drv
  /nix/store/5l8c312pjh9ig44z6q4fc8vjk7r9r7hg-home-manager-generation.drv