these 3 derivations will be built:
  /nix/store/9yisqmrkv3dph96l9waldm12q8sl6shs-treefmt.toml.drv
  /nix/store/bcx0134sd0in76qsmnc9cbgq9zrngxj9-treefmt.drv
  /nix/store/023rbxknb4vjxbd7czh53bq05785glx9-treefmt-check.drv