Comment 2 for bug 685779

I was able to build the "Mefisto" p7zip-9.13 package on Lucid.

Link: https://launchpad.net/~dariovezzosi/+archive/ppa/+build/1969190

Commands:

wget 'http://ppa.launchpad.net/dariovezzosi/ppa/ubuntu/pool/main/p/p7zip/p7zip_9.13.orig.tar.gz'
wget 'http://ppa.launchpad.net/dariovezzosi/ppa/ubuntu/pool/main/p/p7zip/p7zip_9.13-0mefisto1.dsc'
wget 'http://ppa.launchpad.net/dariovezzosi/ppa/ubuntu/pool/main/p/p7zip/p7zip_9.13-0mefisto1.diff.gz'
dpkg-source -x p7zip_9.13-0mefisto1.dsc
cd p7zip-9.13
fakeroot debian/rules binary
cd ..
sudo dpkg -i p7*.deb

p7zip 9.13 adds the ability to decompress PPMd (Method 98) files from WinZip "zipx" archives. This is a key feature on a desktop distribution IMO.

Many users have resorted to using Wine to extract these files:

http://ubuntuforums.org/showthread.php?t=1191546

Having native p7zip PPMd support would be a major improvement over this method.