these 3 derivations will be built:
  /nix/store/gdsflccm9p1w3q3wkdhgd3ig3bkzimps-treefmt.toml.drv
  /nix/store/nmy3jdfg1a1fya9g5szmkmz33jwmkly0-treefmt.drv
  /nix/store/1shsa7szdhf26lr29231p3s6i7c7qd5v-treefmt-check.drv