these 3 derivations will be built:
  /nix/store/d3bp55bp8pirr53vw274306j7ljxc28x-home-manager-files.drv
  /nix/store/d50h46hhbalk5fg94i4l7zs1pf4zj9ch-hm-putter.json.drv
  /nix/store/fjjqhrnv90fvzh5axakrxm609f7p3hxi-home-manager-generation.drv