these 3 derivations will be built:
  /nix/store/0khm5a2r0xrjzsl82qmplxdj9wbgi7v7-treefmt.toml.drv
  /nix/store/dphh2giiih5pvyyvhkd40sqmjypc4rk0-treefmt.drv
  /nix/store/vyvpixhrh9fyvi75rvgdqmrwaiz0p9qm-treefmt-check.drv