Question on Perl modules

[Bill Moseley <moseley@hank.org>]

I'm trying to understand *why* a package was downgraded:

I was installing Bricolage that depends on a bunch of Perl
modules, one of which is libclass-container-perl.

In debian sid there is:

  $ apt-cache show libclass-container-perl | grep Filename
  Filename: pool/main/libc/libclass-container-perl/libclass-container-perl_0.07-1_all.deb

Note the version.  But Bricolage install says it needs a newer version:

  Checking that Class::Container version is >= 0.09... not ok.

Ok, so I grab the latest version from CPAN (Class-Container-0.10.tar.gz)
and use dh-make-perl and it creates this .deb:

  libclass-container-perl_0.1-1_all.deb

Notice that the version number is now 0.10.  After installing I've got
trouble:

  You might want to run `apt-get -f install' to correct these:
  The following packages have unmet dependencies:
    libhtml-mason-perl: Depends: libclass-container-perl (>= 0.07-1) but 0.1-1 is to be installed
    libmodule-build-perl: Depends: libarchive-tar-perl (>= 1.0.0) but it is not going to be installed
                          Depends: libextutils-parsexs-perl (>= 2.02) but it is not going to be installed

So, I follow the advice and it looks like the package is *downgraded*.

    $ apt-get -f install                  
    Reading Package Lists... Done
    Building Dependency Tree... Done
    Correcting dependencies... Done
    The following extra packages will be installed:
      libclass-container-perl
    The following packages will be upgraded
      libclass-container-perl
    1 upgraded, 0 newly installed, 0 to remove and 4 not upgraded.
    Need to get 0B/24.4kB of archives.
    After unpacking 49.2kB of additional disk space will be used.
    Do you want to continue? [Y/n] y
    (Reading database ... 90973 files and directories currently installed.)
    Preparing to replace libclass-container-perl 0.1-1 (using .../libclass-container-perl_0.07-1_all.deb) ...
    Unpacking replacement libclass-container-perl ...
    Setting up libclass-container-perl (0.07-1) ...

So why did dpkg *downgrade* form 0.10 to 0.07?


-- 
Bill Moseley
moseley@hank.org