Cannot downgrading (regression)

Bug #1152381 reported by IRIE Shinsuke on 2013-03-07
This bug affects 1 person
Affects Status Importance Assigned to Milestone
julius (Ubuntu)

Bug Description

In 4.2.2-0ubuntu2, files libjulius-config and libsent-config were moved to libjulius-dev, but the package dependencies were not modified to avoid file conflicts so downgrading fails as follows:

$ sudo apt-get install julius=4.2.2-0ubuntu1 libjulius-dev=4.2.2-0ubuntu1
Reading package lists... Done
Building dependency tree
Reading state information... Done
The following package was automatically installed and is no longer required:
Use 'apt-get autoremove' to remove it.
Suggested packages:
The following packages will be DOWNGRADED:
  julius libjulius-dev
0 upgraded, 0 newly installed, 2 downgraded, 0 to remove and 0 not upgraded.
Need to get 0 B/1,552 kB of archives.
After this operation, 60.4 kB disk space will be freed.
Do you want to continue [Y/n]?
dpkg: warning: downgrading julius from 4.2.2-0ubuntu2 to 4.2.2-0ubuntu1
(Reading database ... 477242 files and directories currently installed.)
Preparing to replace julius 4.2.2-0ubuntu2 (using .../julius_4.2.2-0ubuntu1_amd64.deb) ...
Unpacking replacement julius ...
dpkg: error processing /var/cache/apt/archives/julius_4.2.2-0ubuntu1_amd64.deb (--unpack):
 trying to overwrite '/usr/bin/libsent-config', which is also in package libjulius-dev 4.2.2-0ubuntu2
dpkg-deb: error: subprocess paste was killed by signal (Broken pipe)
dpkg: warning: downgrading libjulius-dev from 4.2.2-0ubuntu2 to 4.2.2-0ubuntu1
Preparing to replace libjulius-dev 4.2.2-0ubuntu2 (using .../libjulius-dev_4.2.2-0ubuntu1_amd64.deb) ...
Unpacking replacement libjulius-dev ...
Processing triggers for man-db ...
Errors were encountered while processing:
E: Sub-process /usr/bin/dpkg returned an error code (1)

Please set Breaks and Replaces in debian/control.

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