these 7 derivations will be built:
  /nix/store/1zbzahlyyy5pyajjrpiiamb2q4yjayxz-hm-firefox-extensions.drv
  /nix/store/4csjalg2dpwcbbyj8km9lk664xwlv2zh-hm_gitconfig.drv
  /nix/store/5k3s5l09lj0xbc9z4mvznwly1q9scq68-hm-firefox-extensions.drv
  /nix/store/6a2rldx8azgy9rd8jgfif1ry2ixjpwcn-hm-firefox-extensions.drv
  /nix/store/7zd4kxh7jbvp87jbn4bchn974ykh177s-home-manager-files.drv
  /nix/store/iphrrl3g8w2hc7yqr5c98zs1krqb4mba-activation-script.drv
  /nix/store/j1g6i7lr0fm51pn5i5mn37jls2xyz0qq-home-manager-generation.drv