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Bug#375318: lintian: New python related checks



Package: lintian
Version: 1.23.21
Severity: wishlist


With the latest changes in python-related packaging, some comme patterns
of error are starting to emerge... so let's check them with lintian.

1/ If you detect dh_pysupport or dh_pycentral, you should have a
corresponding python-support or python-central build-dependency.
(CDBS use a variable DEB_PYTHON_SYSTEM=pysupport/pycentral to select
between them so check for that as well)

2/ We should encourage to switch to the new policy, so a warning if we're
not using it would be welcome. There's no single way to detect that but
the most common way is that packages are using dh_python and have thus a
debian/pycompat containing 2. If you detect dh_python and not
debian/pycompat then you should issue a warning about the need to move to
the new policy. You can refer them to this URL:
http://wiki.debian.org/DebianPython/NewPolicy

3/ If one has dh_python and debian/pycompat=2, then it needs to
build-depends on at least "debhelper (>= 5.0.37.2)".

4/ arch: all .deb should usually no more have dependencies like "python
(<< <something>)" if they use the new policy. That could also be a useful
warning indicating that the packages have not been converted.

That's a good start IMO. We could add many more test for the python policy
itself (and not for its infrastructure), but it's a bit more difficult.

-- System Information:
Debian Release: testing/unstable
  APT prefers unstable
  APT policy: (500, 'unstable')
Architecture: i386 (i686)
Shell:  /bin/sh linked to /bin/bash
Kernel: Linux 2.6.15-1-686
Locale: LANG=fr_FR.UTF-8, LC_CTYPE=fr_FR.UTF-8 (charmap=UTF-8)

Versions of packages lintian depends on:
ii  binutils             2.16.1cvs20060413-1 The GNU assembler, linker and bina
ii  diffstat             1.41-1              produces graph of changes introduc
ii  dpkg-dev             1.13.22             package building tools for Debian
ii  file                 4.17-2              Determines file type using "magic"
ii  gettext              0.14.6-1            GNU Internationalization utilities
ii  intltool-debian      0.34.2+20060512     Help i18n of RFC822 compliant conf
ii  libparse-debianchang 1.0-1               parse Debian changelogs and output
ii  man-db               2.4.3-3             The on-line manual pager
ii  perl [libdigest-md5- 5.8.8-6             Larry Wall's Practical Extraction 

lintian recommends no packages.

-- no debconf information



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