these 3 derivations will be built:
  /nix/store/ap0g443qzi0p4nh412r79hm7ifkws491-treefmt.toml.drv
  /nix/store/rwc5mk1sjb75l2vlgjmny8vgq4xvbn9y-treefmt.drv
  /nix/store/qf45fal7w7qf7vprb3620dl49qfbdfvf-treefmt-check.drv
this path will be fetched (1.1 MiB download, 3.5 MiB unpacked):
  /nix/store/69wgdxvp0q5dv6fc7x0mlgm5rjj77yqa-nixpkgs-fmt-1.3.0