pixz (https://github.com/vasi/pixz https://github.com/vasi/pixz) is a nice parallel xz that additionally creates an index of tar files so you can decompress ind

pixz (https://github.com/vasi/pixz https://github.com/vasi/pixz) is a nice parallel xz that additionally creates an index of tar files so you can decompress individual files. I wonder if dpkg could be extended to do something similar.