these 5 derivations will be built:
  /nix/store/2irvpfyd05nk9l90cwnw3hfbkl5kp0jh-hm-firefox-extensions.drv
  /nix/store/fz0d86wrzggmbwgcavjzrpxk9rl10rwz-hm-firefox-extensions.drv
  /nix/store/dy3b732l2qnfyz6x8zwpmrnr3i2y98bg-home-manager-files.drv
  /nix/store/04gscwqqqs70avmgvm71b9165kx03qr0-hm-putter.json.drv
  /nix/store/fhv6vjvqhmxp981k84bwrhpk8raca1p5-home-manager-generation.drv