On Mon, Sep 25, 2006 at 02:00:02AM -0500, Adam Porter wrote: > This is a little confusing, and please forgive me if the answer is out there > somewhere, but I haven't been able to find it. Here's what happened: > > 1. I installed pentium-builder and set it for "athlon-xp" so it will > compile for my CPU. > 2. $ apt-src -i install nvidia-glx > 3. $ apt-cache policy nvidia-glx > > nvidia-glx: > Installed: 1.0.8774-3 > Candidate: 1.0.8774-3 > Version table: > 1.0.8774-3 0 > 800 http://ftp.us.debian.org unstable/non-free Packages > *** 1.0.8774-3 0 > 100 /var/lib/dpkg/status > > Notice that even though the versions are the same, it's seeing them as > different packages. > That is because the versions are the same, but the md5sums are different. You can force it to prefer yours if you setup a local repository. If you are interested in doing that, here is a HOWTO I have written: http://people.connexer.com/~roberto/howtos/debrepository > > $ cat /etc/apt/preferences > Package: * > Pin: release o="" > Pin-Priority: 900 > > Package: * > Pin: release a=testing > Pin-Priority: 900 > > Package: * > Pin: release a=unstable > Pin-Priority: 800 > > > That's straight out of the apt_preferences man page. Didn't work. So > finally I found a bug report on apt, bug #351056, that pointed me to the > MD5sum of the packages: > > > $ apt-cache show nvidia-glx > ... > Suggests: nvidia-settings, nvidia-kernel-source (>= 1.0.8774) > Conflicts: nvidia-glx-src > Filename: > pool/non-free/n/nvidia-graphics-drivers/nvidia-glx_1.0.8774-3_i386.deb > Size: 3293444 > MD5sum: 6e393e5d637a15096df1c19935db2567 > SHA1: 00dcc698272d2a76594cd9e4a3afb57fce9a059e > SHA256: 5a8267d909944e19aec748ad5ab4e63ec769dbe73a03ff96007315a4ef0a1e80 > Description: NVIDIA binary XFree86 4.x driver > ... > Suggests: nvidia-settings, nvidia-kernel-source (>= 1.0.8774) > Conflicts: nvidia-glx-src > Conffiles: > /etc/default/nvidia-glx 81be77103c93a6a52273ba4d0ce8006b > /etc/init.d/nvidia-glx 58f85e292ae2141c64b6490e19fc3f91 > Description: NVIDIA binary XFree86 4.x driver > > > Notice that the listing for the second package, the one that's currently > installed, has no MD5sum, or SHA sums. (I'm not sure why it doesn't have > any, though I'm guessing it's because I just installed the package with > dpkg and didn't create a local repository.) > > But even if it had them, I still think it would be a problem, because I > compiled it with "-mcpu=athlon-xp", so the binaries should be different. > > So, how do I get apt to prefer the local, already-installed package when > it's the same version number, but the MD5sum may differ or even be > nonexistant for the already-installed package? > > (And, of course, this is not just a problem for the nvidia-glx package, but > any others as well.) > > (And I know about apt-build, but it has its own set of problems that > sometimes forces you to use other ways of compiling packages.) > Is I mentioned above, you can create your own local repository. Another possibility is to download the source first and add a changelog entry bumping the version. For your nvidia-glx package, you can do something like: 1.0.8774-3 -> 1.0.8774-3~porter0 OR 1.0.8774-3 -> 1.0.8774-3.0.0.porter.0 I also talk about version number selection for customized packages in my Debian package customization HOWTO: http://people.connexer.com/~roberto/howtos/debcustomize Either one should still prefer your version over the archive's 1.0.8774-3, but when 1.0.8774-4 or newer comes out, it will show up as upgradable. I am guesing that you want that sort of behavioer so that you know when to rebuild your package. Regards, -Roberto -- Roberto C. Sanchez http://people.connexer.com/~roberto http://www.connexer.com
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