these 3 derivations will be built:
  /nix/store/b7bf7hjldm7zq36vj71s2c1nj6bmh3kl-treefmt.toml.drv
  /nix/store/i3mx7avqlf9q9v08cxir58ixhgqxvxq4-treefmt.drv
  /nix/store/cbzjj0rlcynkzk7apag0zs4av01vw6cf-treefmt-check.drv