Package: ice35-translators,zeroc-ice-compilers
Version: ice35-translators/3.5.1-6.4
Version: zeroc-ice-compilers/3.6.2-stretch+git1+6f49504-2
Severity: serious
User: trei...@debian.org
Usertags: edos-file-overwrite

Date: 2016-06-09
Architecture: amd64
Distribution: sid

Hi,

automatic installation tests of packages that share a file and at the
same time do not conflict by their package dependency relationships has
detected the following problem:


Preconfiguring packages ...
Selecting previously unselected package libmcpp0:amd64.
(Reading database ... 10960 files and directories currently installed.)
Preparing to unpack .../libmcpp0_2.7.2-4_amd64.deb ...
Unpacking libmcpp0:amd64 (2.7.2-4) ...
Selecting previously unselected package gcc-6-base:amd64.
Preparing to unpack .../gcc-6-base_6.1.1-5_amd64.deb ...
Unpacking gcc-6-base:amd64 (6.1.1-5) ...
Setting up gcc-6-base:amd64 (6.1.1-5) ...
(Reading database ... 10973 files and directories currently installed.)
Preparing to unpack .../libstdc++6_6.1.1-5_amd64.deb ...
Unpacking libstdc++6:amd64 (6.1.1-5) over (4.8.2-19) ...
Processing triggers for libc-bin (2.22-11) ...
Setting up libstdc++6:amd64 (6.1.1-5) ...
Processing triggers for libc-bin (2.22-11) ...
Selecting previously unselected package libssl1.0.2:amd64.
(Reading database ... 10987 files and directories currently installed.)
Preparing to unpack .../libssl1.0.2_1.0.2h-1_amd64.deb ...
Unpacking libssl1.0.2:amd64 (1.0.2h-1) ...
Selecting previously unselected package libiceutil35v5:amd64.
Preparing to unpack .../libiceutil35v5_3.5.1-6.4_amd64.deb ...
Unpacking libiceutil35v5:amd64 (3.5.1-6.4) ...
Selecting previously unselected package libslice35v5:amd64.
Preparing to unpack .../libslice35v5_3.5.1-6.4_amd64.deb ...
Unpacking libslice35v5:amd64 (3.5.1-6.4) ...
Selecting previously unselected package ice35-translators.
Preparing to unpack .../ice35-translators_3.5.1-6.4_amd64.deb ...
Unpacking ice35-translators (3.5.1-6.4) ...
Selecting previously unselected package libexpat1:amd64.
Preparing to unpack .../libexpat1_2.1.1-3_amd64.deb ...
Unpacking libexpat1:amd64 (2.1.1-3) ...
Selecting previously unselected package libzeroc-ice3.6:amd64.
Preparing to unpack .../libzeroc-ice3.6_3.6.2-stretch+git1+6f49504-2_amd64.deb 
...
Unpacking libzeroc-ice3.6:amd64 (3.6.2-stretch+git1+6f49504-2) ...
Selecting previously unselected package zeroc-ice-slice.
Preparing to unpack .../zeroc-ice-slice_3.6.2-stretch+git1+6f49504-2_all.deb ...
Unpacking zeroc-ice-slice (3.6.2-stretch+git1+6f49504-2) ...
Selecting previously unselected package zeroc-ice-compilers.
Preparing to unpack 
.../zeroc-ice-compilers_3.6.2-stretch+git1+6f49504-2_amd64.deb ...
Unpacking zeroc-ice-compilers (3.6.2-stretch+git1+6f49504-2) ...
dpkg: error processing archive 
/var/cache/apt/archives/zeroc-ice-compilers_3.6.2-stretch+git1+6f49504-2_amd64.deb
 (--unpack):
 trying to overwrite '/usr/bin/slice2cpp', which is also in package 
ice35-translators 3.5.1-6.4
dpkg-deb: error: subprocess paste was killed by signal (Broken pipe)
Processing triggers for libc-bin (2.22-11) ...
Processing triggers for man-db (2.7.5-1) ...
Errors were encountered while processing:
 
/var/cache/apt/archives/zeroc-ice-compilers_3.6.2-stretch+git1+6f49504-2_amd64.deb
E: Sub-process /usr/bin/dpkg returned an error code (1)


This is a serious bug as it makes installation fail, and violates
sections 7.6.1 and 10.1 of the policy. An optimal solution would
consist in only one of the packages installing that file, and renaming
or removing the file in the other package. Depending on the
circumstances you might also consider Replace relations or file
diversions. If the conflicting situation cannot be resolved then, as a
last resort, the two packages have to declare a mutual
Conflict. Please take into account that Replaces, Conflicts and
diversions should only be used when packages provide different
implementations for the same functionality.

Here is a list of files that are known to be shared by both packages
(according to the Contents file for sid/amd64, which may be
slightly out of sync):

  /usr/bin/slice2cpp
  /usr/bin/slice2cs
  /usr/bin/slice2freeze
  /usr/bin/slice2freezej
  /usr/bin/slice2html
  /usr/bin/slice2java
  /usr/bin/slice2php
  /usr/share/man/man1/slice2cpp.1.gz
  /usr/share/man/man1/slice2cs.1.gz
  /usr/share/man/man1/slice2freeze.1.gz
  /usr/share/man/man1/slice2freezej.1.gz
  /usr/share/man/man1/slice2html.1.gz
  /usr/share/man/man1/slice2java.1.gz
  /usr/share/man/man1/slice2php.1.gz

This bug has been filed against both packages. If you, the maintainers of
the two packages in question, have agreed on which of the packages will
resolve the problem please reassign the bug to that package. You may then
also register in the BTS that the other package is affected by the bug.

-Ralf.

PS: for more information about the detection of file overwrite errors
of this kind see http://qa.debian.org/dose/file-overwrites.html.

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