these 3 derivations will be built:
  /nix/store/1hqp06pwah3hddf4kcrypzpqqgi2nfwh-treefmt.toml.drv
  /nix/store/z67swi92i3syrxszc92g9jzp938q7vgh-treefmt.drv
  /nix/store/j98gqb028l7dw06w78r82zlx3268kb0v-nix-shell.drv