Re: Multiarch file overlap summary and proposal
* David Kalnischkies [2012-02-17 14:15 +0100]:
> You generously left out the paragraph describing how APT should
> detect that the package foo is in fact a library ...
My impression was that you think very library centric. All I wrote was
(in other words), that we should consider non-library packages as much
as library packages, and I did not write nor implied that libraries
should be handled in a different way.
> Is 'apt-get remove foo+' then going to install all foo's or just one?
"apt-get install g+++" is a weird syntax.
> The current implementation of always foo == foo:native doesn't fail
> your diagram, too, so what is this going to show us?
It depends on how one reads it, anyway, examples I consider to be
inconsistent are more helpful than a diagram without clear semantic.
# dpkg --print-architecture
amd64
# perl -00 -lne 'print if /^Package: (clang|tendra)$/m &&
/^Status: install ok installed$/m' /var/lib/dpkg/status \
| awk '/^Package:/ {printf "%s:", $2} /^Architecture:/ {print $2}'
tendra:i386
clang:i386
I was not able to find a command that shows this information.
# apt-cache policy tendra | sed -n 1p
tendra:i386:
# apt-cache policy clang | sed -n 1p
clang:
# apt-get remove tendra
The following packages will be REMOVED:
tendra:i386
# apt-get remove clang
Package clang is not installed, so not removed
The above shows that it seems to depend on the availability of
foo:native if apt-get remove foo removes foo:foreign.
# dpkg -l | awk '$2=="clang"{print}'
ii clang 3.0-5 Low-Level ...
# dpkg -S bin/clang
clang: /usr/bin/clang
clang: /usr/bin/clang++
# dpkg -r clang
dpkg: warning: there's no installed package matching clang
# apt-get remove clang
Package clang is not installed, so not removed
According to dpkg's command line interface, the file /usr/bin/clang is
in the package clang and dpkg -l shows it as installed, but it can not
be removed using this name, neither by apt nor by dpkg.
# dpkg -l | grep libzookeeper-st2
ii libzookeeper-st2:amd64 3.3.4+dfsg1-3 Single ...
ii libzookeeper-st2:i386 3.3.4+dfsg1-3 Single ...
Unlike the above dpkg -l output showing the foreign clang package,
libzookeeper-st2 is shown with the architecture appended.
Regards
Carsten
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