this derivation will be built:
  /nix/store/cah4l6wbp68h42y1g2sz8ii9sj9v3794-inputDerivation-effect-update-flake-inputs.drv
this path will be fetched (6.7 KiB download, 91.6 KiB unpacked):
  /nix/store/gmgkpylrll9c9pwnkqy8jcp78y4mgxjn-nix-2.34.9-dev
copying path '/nix/store/gmgkpylrll9c9pwnkqy8jcp78y4mgxjn-nix-2.34.9-dev' from 'https://cache.nixos.org'...
building '/nix/store/cah4l6wbp68h42y1g2sz8ii9sj9v3794-inputDerivation-effect-update-flake-inputs.drv'...