* Provides a mapping between python project names and Debian
binary/source package names
* Converts setuptools versions to Debian versions while
maintaining
sort order
* Can introspect an .egg-info directory to figure out the Debian
dependencies for use in the debian/control file. It can also
handle/understand extras (I Hope!)
I looked briefly at this code, and it appears that it is doing purely
syntactic mapping between Debian package names and Python
distribution names, for example:
def py_to_bin(setuptools_project):
"""Convert a setuptools project name to a debian binary package
name"""
return _PY_TO_BIN.get(setuptools_project, 'python-%s' %
setuptools_project.lower())
This works most of the time, but it isn't reliable. For example, the
module name is "OpenSSL", the distribution name is "pyOpenSSL", and
the Debian package name is "python-openssl":
http://packages.debian.org/sid/amd64/python-openssl/filelist
That's why I contributed a patch to stdeb which uses the Debian
database of which files are included in which packages (the same
database that generates the web page linked above):
http://github.com/astraw/stdeb/blob/
647dd441a1712f8df37b5f7f5ba22ab6aeb2c3e7/stdeb/util.py#L135
The way stdeb does it looks in the database for files named
"$DISTRIBUTION-$VERSION-py$PYTHONVERSION.egg-info". The Debian
package that includes such a file is the Debian package that you need
to install in order to satisfy a dependency on $DISTRIBUTION,
$VERSION. This works regardless of whether the Python package is
built with distutils or setuptools, and indeed it works for all
packages that I know of. (There is actually one exception: the
Debian package for setuptools itself doesn't include a version number
in its .egg-info filename:
http://packages.debian.org/sid/amd64/python-setuptools/filelist
It has a file named:
/usr/share/pyshared/setuptools.egg-info/
I guess we should add a fall-back-with-warning behavior to stdeb that
if it can't find "$DISTRIBUTION-$VERSION.egg-info", but it can find
"$DISTRIBUTION.egg-info", then it should (optionally) assume that the
Debian package that has that file will satisfy the requirement,
regardless of the version number in the requirement. That, or
someone should open a ticket asking Debian to add a version number to
that filename.
The exact regexp is currently:
egginfore=("(/(%s)(?:-[^/]+)?(?:-py[0-9]\.[0-9.]+)?\.egg-info)"
% '|'.join(req.project_name for req in requirements))
If you would be interested in including this mechanism to query the
database in van.pydeb, I would be happy to advise you.
Regards,
Zooko
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