these 3 derivations will be built:
  /nix/store/32qf0vfzk8nj45xgzn02yf17awd5l4sp-treefmt.toml.drv
  /nix/store/p2rgldhakiz40zdmn5p5d26p6wci46rb-treefmt.drv
  /nix/store/cbwpwkvyzd9wfqwljmz41yqdr3d2lncq-treefmt-check.drv