these 3 derivations will be built:
  /nix/store/wfi6gm2f6v996939xdq9nq7cczk7c46h-treefmt.toml.drv
  /nix/store/h3nn8vcsnj2j8i5gwql7cvls2cws8p5y-treefmt.drv
  /nix/store/0mdhysldkzw9zl0k0fzgbka1mfcyznmr-nix-shell.drv