these 3 derivations will be built:
  /nix/store/637vxhwa97yqbg27qy92pz62zk9fq4kk-treefmt.toml.drv
  /nix/store/0kil9xr22d756ilfjvknnf7wggma2rd9-treefmt.drv
  /nix/store/yli85vwdl8ag5k2kb4d1rxx9x4s1pxip-treefmt-check.drv