these 3 derivations will be built:
  /nix/store/3i67fl8qkw3arkalfq7zgcc091p1pjdf-treefmt.toml.drv
  /nix/store/69xc7yr7l92vp38yyfdnscy80zwrqijh-treefmt.drv
  /nix/store/yyk2m8wc926nnhaaymlrg8y6mc7a0gpn-treefmt-check.drv