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.
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