Hello All:
This bug is really not for xournal as far as I can tell. Nevertheless, I
am not sure how it is to be solved. Therefore, I am including the
maintainers of xpdf and poppler. Let me summarize:
poppler-utils contains, among others, "pdftoppm".
xpdf-utils contains a subset of the executables contained in
poppler-utils, but NOT "pdftoppm".
xpdf-utils says it conflicts, replaces and provides poppler-utils but it
cannot as it does not contain all of the same executables as
poppler-utils, notably, it is missing "pdftoppm", "pdftoabw", and
"pdftohtml". Consequently, any package which depends on poppler-utils
might not function properly if xpdf-utils is installed instead.
xpdf-reader contains "pdftoppm" so if it is installed along with
poppler-utils, this executable will belong only to the last one installed.
This can cause a problem for a program like xournal, which needs
"pdftoppm".
One of the worst cases would go something like this:
1. xournal is installed on a system where xpdf-reader is already
installed but xpdf-utils is not. It pulls in poppler-utils, which replaces
the 'pdftoppm" in xpdf-reader with its own.
2. For some reason, xpdf-utils is installed. Since it provides
poppler-utils but also conflicts with it, poppler-utils is removed but
that is OK with dpkg because xpdf-utils claims to provide poppler-utils.
3. Now there is no version of "pdftoppm" installed as it was owned by
poppler-utils which is now uninstalled. This means xournal is unable to
work with PDF files. This can only be fixed by reinstalling xpdf-reader.
as the new maintainer of xournal, I am not sure how to proceed. I could
drop the dependency on poppler-utils and have only a dependency on
xpdf-reader but I cannot really put a conflicts with poppler-utils
(wouldn't it?) because that would also prevent the installtion of
xpdf-utils, which should be possible to have intalled with xpdf-reader.
At this point, xournal works with either version of "pdftoppm" so there is
no real preference for having poppler-utils installed over xpdf-reader. I
am thinking that the correct next steps would be as follows:
* Make xournal depend on xpdf-reader ONLY.
* Figure out a way to resolve the conflicts between poppler-utils and the
xpdf-reader/xpdf-utils combination. It seems to me that a diversion would
be the best solution here. Either poppler-utils or xpdf-reader could set
up a diversion for "pdftoppm" so that the other won't replace it. In
addition, I think that xpdf-utils should not provide poppler-utils unless
it also depends on xpdf-reader. This is not completely correct though
since poppler-utils has three other programs (see above) that are not in
xpdf-utils.
Carlo
--
Carlo U. Segre -- Professor of Physics
Associate Dean for Special Projects, Graduate College
Illinois Institute of Technology
Voice: 312.567.3498 Fax: 312.567.3494
se...@iit.edu http://www.iit.edu/~segre se...@debian.org
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