Cyril Brulebois <[email protected]> (2014-02-18): > So I've played a little using deb-reversion to generate local versions > (see #739437), and using that loop (once with xz, once with none): > > for i in *.udeb; do dpkg -x $i foo && dpkg --control $i foo/DEBIAN && > fakeroot dpkg-deb -b -Znone --uniform-compression foo && dpkg-name -o foo.deb > && rm -r foo; done > # .deb → .udeb renaming > # reprepro includeudeb ... > # boot with debian-installer/allow_unauthenticated=true
Iterating over the Filename's in jessie/main/debian-installer/binary-amd64/Packages.gz and recompressing every udeb with "-Zxz --uniform-compression", I'm only getting an overall 5% gain in udeb size. For the curious I'm attaching a little PDF file with per-udeb delta. Before: 47163752 After: 44718700 So it looks to me there's no need to rush for xz-only udebs. Especially since stable's d-i might be used to install testing, and also because we're going to add a little bit of entropy with wheezy-backports images (even though it should be trivial to pull udpkg from backports so that it can deal with any xz+xz udeb it comes across). Mraw, KiBi.
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