these 3 derivations will be built:
  /nix/store/xgg9wvk6fmhy4d8w1q113fhqaqw3pz89-treefmt.toml.drv
  /nix/store/841fxy26ra4m27rn5m8vsw9lham9gy9j-treefmt.drv
  /nix/store/jl8sr21vzh9rfyiqmpgjzgnrv4lkkj6c-treefmt-check.drv