these 3 derivations will be built:
  /nix/store/g4ryrxxgsh1jv6bwavvjzc1qfpq1k9gf-home-manager-files.drv
  /nix/store/kib8pxhnm1iqjrrrxynvnwxja4jqddcr-hm-putter.json.drv
  /nix/store/0g6skfqnmhrxx16wzbmk77fkcz7lfspz-home-manager-generation.drv