these 3 derivations will be built:
  /nix/store/wyavzfihxx6jqhpfviiqx2viavji879g-similar-3.2.0.drv
  /nix/store/2fr1x9xjn0c6na7nlh549r4jss92ny4k-cargo-vendor-dir.drv
  /nix/store/xc8i5m0hgq7ijpwcs50q95qmr7wkidz4-nix-diff-0.1.0.drv