these 3 derivations will be built:
  /nix/store/s0kfsnkvwqi3vzl4fp3imd3zfl50cbxc-treefmt.toml.drv
  /nix/store/7akll4576fnwhajxwdxlfg05wx2vnbqj-treefmt.drv
  /nix/store/vc4j75ic4mcp61lp58m67g2pvh43559n-treefmt-check.drv