these 3 derivations will be built:
  /nix/store/nkprnjjpqbrwfsq6b708pwchwwhhvcq7-treefmt.toml.drv
  /nix/store/w2xm0mvz1awihx3h24k304zghk76qx1j-treefmt.drv
  /nix/store/cbr6qas67gxr9hl5bxd6hsnv4vwx9nrf-treefmt-check.drv