these 3 derivations will be built:
  /nix/store/6k2r0bhv2dbyrfhpfhr95qkl519vw5b1-treefmt.toml.drv
  /nix/store/x0b6wyh5fyjn6hv96xndh1pjdwia2sii-treefmt.drv
  /nix/store/zfcw25pq5d0vsmnwjjxqch27w81zpvf0-treefmt-check.drv