Generate separate dependencies for extra and version requirements

[Gediminas Paulauskas]

When a requirement specifies both extras and versions, van.pydeb may generate an uninstallable package.

zope.app.component has a problematic dependency:

zope.component [hook,zcml] >= 3.8

This results in

Depends: ... python-zope.component-hook (>= 3.8), python-zope.component-zcml (>= 3.8), ...

But python-zope.component-hook is a virtual package, thus does not have a version. When trying to install an error occurs:

Unpacking replacement python-zope.app.component ...
dpkg: dependency problems prevent configuration of python-zope.app.component:
 python-zope.app.component depends on python-zope.component-hook (>= 3.8); however:
  Package python-zope.component-hook is not installed.

To solve this, versions and extras need to be separate dependencies:

Depends: ... python-zope.component (>= 3.8), python-zope.component-hook, python-zope.component-zcml, ...

[Gediminas Paulauskas (menesis)]

The fix is committed to zope svn, will be available in version 1.3.3