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    Hello<br>
    <br>
    We have been unable to install virtualenv and python3-virtualenv on
    Debian stretch/i386 with python3:amd64, without customising the
    former two packages, due to what appear to be minor package
    configuration issues.<br>
    <br>
    We have resolved the issues in custom-built packages by:<br>
    - Adding a 'Multi-Arch: allowed' header to each of these two
    packages<br>
    - Removing the apparently surplus python3 dependency in
    python3-virtualenv, leaving only the python3:any dependency<br>
    - Modifying the python3 dependency in virtualenv, to make it
    python3:any too.<br>
    (please see example diffs below).<br>
    <br>
    Please would you advise what additional action, if any, we need to
    take to raise these issue formally and see them fixed in future
    package releases?<br>
    <br>
    Kind regards<br>
    <br>
    Struan Bartlett<br>
    <br>
    <tt>diff -ubw DEBIAN/control*</tt><tt><br>
    </tt><tt>--- DEBIAN/control      2016-12-01 23:08:39.000000000 +0000</tt><tt><br>
    </tt><tt>+++ DEBIAN/control2     2019-03-06 22:40:00.000000000 +0000</tt><tt><br>
    </tt><tt>@@ -1,10 +1,11 @@</tt><tt><br>
    </tt><tt> Package: python3-virtualenv</tt><tt><br>
    </tt><tt> Source: python-virtualenv</tt><tt><br>
    </tt><tt> Version: 15.1.0+ds-1</tt><tt><br>
    </tt><tt> Architecture: all</tt><tt><br>
    </tt><tt>+Multi-Arch: allowed</tt><tt><br>
    </tt><tt> Maintainer: Debian Python Modules Team
      <a class="moz-txt-link-rfc2396E" href="mailto:python-modules-team@lists.alioth.debian.org"><python-modules-team@lists.alioth.debian.org></a></tt><tt><br>
    </tt><tt> Installed-Size: 137</tt><tt><br>
    </tt><tt>-Depends: python-pip-whl (>= 8.1.1-2), python3,
      python3-pkg-resources, python3:any (>= 3.3.2-2~)</tt><tt><br>
    </tt><tt>+Depends: python-pip-whl (>= 8.1.1-2),
      python3-pkg-resources, python3:any (>= 3.3.2-2~)</tt><tt><br>
    </tt><tt> Section: python</tt><tt><br>
    </tt><tt> Priority: optional</tt><tt><br>
    </tt><tt> Homepage: <a class="moz-txt-link-freetext" href="https://pypi.python.org/pypi/virtualenv">https://pypi.python.org/pypi/virtualenv</a>```</tt><tt><br>
    </tt><tt>(edited)</tt><tt><br>
    </tt><tt><br>
    </tt><tt># diff -ubw
DEBIAN/control*                                                                                                                                    
    </tt><tt><br>
    </tt><tt>--- DEBIAN/control      2016-12-01 23:08:39.000000000 +0000</tt><tt><br>
    </tt><tt>+++ DEBIAN/control2     2019-03-06 22:45:13.000000000 +0000</tt><tt><br>
    </tt><tt>@@ -1,10 +1,11 @@</tt><tt><br>
    </tt><tt> Package: virtualenv</tt><tt><br>
    </tt><tt> Source: python-virtualenv</tt><tt><br>
    </tt><tt> Version: 15.1.0+ds-1</tt><tt><br>
    </tt><tt> Architecture: all</tt><tt><br>
    </tt><tt>+Multi-Arch: allowed</tt><tt><br>
    </tt><tt> Maintainer: Debian Python Modules Team
      <a class="moz-txt-link-rfc2396E" href="mailto:python-modules-team@lists.alioth.debian.org"><python-modules-team@lists.alioth.debian.org></a></tt><tt><br>
    </tt><tt> Installed-Size: 30</tt><tt><br>
    </tt><tt>-Depends: python3, python3-virtualenv</tt><tt><br>
    </tt><tt>+Depends: python3:any, python3-virtualenv</tt><tt><br>
    </tt><tt> Breaks: python-virtualenv (<< 1.11.6)</tt><tt><br>
    </tt><tt> Replaces: python-virtualenv (<< 1.11.6)</tt><tt><br>
    </tt><tt> Section: python</tt><br>
    <br>
    -- <br>
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        <p style="border-top:1px solid #ccc;padding-top:.5em;">Struan
          Bartlett<br>
          Founder & CEO<br>
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