these 3 derivations will be built:
  /nix/store/2z641brlz2cspzkml86ayq3bqqn9yl99-treefmt.toml.drv
  /nix/store/plmc1kh11c4r4bkdss7cdq2zw6ibfk5n-treefmt.drv
  /nix/store/lh35syljnsqdlwpajnh77vpwz6db669v-treefmt-check.drv