these 3 derivations will be built:
  /nix/store/l597gngflzliq073zzw5fbnmq96nzjj4-treefmt.toml.drv
  /nix/store/0968zk0bsdqd4vcbi5kyby2l4rnc3i19-treefmt.drv
  /nix/store/s6qw9iwry87h49zim3p7fyjfs1zkajd5-treefmt-check.drv