these 3 derivations will be built:
  /nix/store/2snh15nfyjwfphwk5wdprvm0vx4vdrx6-treefmt.toml.drv
  /nix/store/plfgi87wn342rrgxhnh8r1c3mprf9m38-treefmt.drv
  /nix/store/z0xl4048r2v38ppcyccr003w4jv6afif-treefmt-check.drv