these 3 derivations will be built:
  /nix/store/5v4d57vcwxa3nd6gyn2p5inkm28mf21g-treefmt.toml.drv
  /nix/store/dxslvrgajxvkkjm366mm4ngfsl76mp3f-treefmt.drv
  /nix/store/kvh6smb7nvfrcxfgkfq5ghxzmx2ia3vw-treefmt-check.drv