these 4 derivations will be built:
  /nix/store/i67qxrzxgqmzc6xz7mbvjb7acqswc698-nil.drv
  /nix/store/sl6vyqcr1kja5hpiyi0pnbhi2i9sxsqg-treefmt.toml.drv
  /nix/store/x5hk9y3qhd4b5vza9xiz9znw3wmglq6n-treefmt.drv
  /nix/store/x77v3g7iqyagfvy2m7vbhy3lrc3rcpjj-treefmt-check.drv