these 3 derivations will be built:
  /nix/store/4c6wz2fynxhxwc0519v6rql7h0qq745h-treefmt.toml.drv
  /nix/store/ndl0vdscv3n68kwpvabwldp80pfmfmyz-treefmt.drv
  /nix/store/vdh63dfz3cni9rv16ifwfffd9cac3dan-treefmt-check.drv