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Re: Finding out why a Build-Dependency is fetched.

On Thu, Dec 20, 2007 at 11:49:53AM +0530, Kumar Appaiah wrote:
> See this old log. The apt-get command follows the same order as
> specified in the package's Build-Depends:
> http://buildd.debian.org/fetch.cgi?&pkg=octave2.9&ver=1%3A2.9.17-1&arch=sparc&stamp=1195174810&file=log
> But here, it is in alphabetical order:
> http://buildd.debian.org/fetch.cgi?&pkg=octave2.9&ver=1%3A2.9.19-1&arch=sparc&stamp=1197772112&file=log
> And I saw the source package for octave2.9, here's the control:
> Build-Depends: g++-4.1 (>= 4.1.1-4), debhelper (>= 5.0.0), autoconf, texinfo,
>  texlive-latex-base, texlive-generic-recommended, g77,
>  libreadline5-dev,
>  libncurses5-dev, gperf, libhdf5-serial-dev (>= 1.6.5) |
>  libhdf5-lam-dev (>= 1.6.5) | libhdf5-mpich-dev (>= 1.6.5),
>  refblas3-dev | atlas3-base-dev, lapack3-dev | atlas3-base-dev,
>  gnuplot-nox, fftw3-dev, texi2html, less, dpatch,
>  slice, libpcre3-dev, flex, libglpk-dev (>= 4.15),
>  libsuitesparse-dev, gawk, gs-gpl, libcurl4-dev, libqhull-dev,
>  desktop-file-utils
> Notice that refblas3-dev is _before_ lapack3-dev. Now, if apt-get is
> called faithfully in this order, atlas does not come in. But if it is
> reordered, the lapack3-dev dependencies are honoured first, and that
> pulls in atlas3-base, which is the first alternate dependency, and is
> satisfiable.
> Now, the question is, where is the reordering occurring? sbuild?

And the answer is, that the dsc file itself has it ordered! The
generated dsc file has ordered B-Deps.

I think this has to do with the dpkg-dev refactoring. I'll find out if
a bug is warranted, though I'd appreciate more input.


Kumar Appaiah,
458, Jamuna Hostel,
Indian Institute of Technology Madras,
Chennai - 600 036

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