these 3 derivations will be built:
  /nix/store/i6xzzwxmrpf44ihdm21yf302zmk70v8b-treefmt.toml.drv
  /nix/store/4asz44l23bmibx0rxiraia99fpc30kik-treefmt.drv
  /nix/store/iy6g1qxsl8af2iazbc2kcrnmmmv580d6-treefmt-check.drv