"Boyd Stephen Smith Jr." <b...@iguanasuicide.net> wrote: >In <47pt7511s56vq779jtfp2ap0059a8m4...@4ax.com>, Jeff Grossman wrote: >>mail:~# apt-cache policy php5 >>php5: >> Installed: 5.2.6.dfsg.1-1+lenny3+custom1 >> Candidate: 5.2.9.dfsg.1-4 >> Version table: >> 5.2.10.dfsg.1-2 0 >> 200 http://ftp.us.debian.org unstable/main Packages >> 5.2.9.dfsg.1-4 0 >> 300 http://ftp.us.debian.org testing/main Packages >> *** 5.2.6.dfsg.1-1+lenny3+custom1 0 >> 100 /var/lib/dpkg/status >> 5.2.6.dfsg.1-1+lenny3 0 >> 500 http://ftp.us.debian.org lenny/main Packages >> 500 http://security.debian.org lenny/updates/main Packages >> >>What I don't understand is how come the candidate is 5.2.9 when that >>has a pinning of 300, clearly lower than 5.2.6. > >Because apt refuses to downgrade unless a specific version is specified (or >the priority is > 1000). Downgrades aren't supportable; they may work most >of the time but if they don't they are virtually impossible to fix. > >So, when apt is considering which version to install it starts with: > 5.2.10.dfsg.1-2 200 > 5.2.9.dfsg.1-4 300 > 5.2.6.dfsg.1-1+lenny3+custom1 100 > 5.2.6.dfsg.1-1+lenny3 500 > >Now, it throws away anything with a priority of less than 0, but that >doesn't change anything. Then, it throws away anything if a version of less >tham 5.2.6.ddfsg.1-1+lenny3+custom1 (current version) and a priority of less >than 1000. This leaves: > 5.2.10.dfsg.1-2 200 > 5.2.9.dfsg.1-4 300 > 5.2.6.dfsg.1-1+lenny3+custom1 100 > >At this point, it chooses the one(s) with the highest priority: > 5.2.9.dfsg.1-4 300 > >Since there's only one version left, it is the candidate. If there were >multiple versions left it would choose the one with the highest version. > >>Did I use the correct naming convention when I setup my custom version >>of PHP? > >Yes, but running a mixed system (or even a not-mixed system with testing and >unstable in your sources.list) requires a but more effort than running pure >stable.
Thank you for this valuable information. I was not aware of how apt or aptitude figured out what to upgrade. I guess I will pin my custom version of php5 to a priority of 1000 so it does not bother me with trying to upgrade anymore. Jeff -- To UNSUBSCRIBE, email to debian-user-requ...@lists.debian.org with a subject of "unsubscribe". Trouble? Contact listmas...@lists.debian.org
