these 3 derivations will be built:
  /nix/store/7d8hj27ndmmcws85i4c52ndi5pncghdi-treefmt.toml.drv
  /nix/store/wysil5xgwpb0nnzf0d8888mh0qm5b0zs-examples.drv
  /nix/store/r98lzrgrs82d4rbgw9rvn2jqkgfxm547-test-examples.drv