these 3 derivations will be built:
  /nix/store/2gspbvvzw5cpjjwfsb7n3ldfsbaw80kb-treefmt.toml.drv
  /nix/store/ld9z3y0636lr2wf87rc29rxr8jfb2m0w-treefmt.drv
  /nix/store/m6ljkralp3fhb9727q9i2gk4mkqmz2ws-nix-shell.drv