Re: New pre-depends: python pre-depends python-minimal

[Scott Kitterman <debian@kitterman.com>]

On Saturday, November 22, 2014 05:06:25 PM Jakub Wilk wrote:
> * Wouter Verhelst <wouter@debian.org>, 2014-11-22, 08:25:
> >>It appears that the appropriate resolution of  #769106 [1] is to add a
> >>new pre-depends on python-minimal in python.
> >>
> >>This issue at hand is that at the time python2.7-minimal is
> >>configured, python is unpacked, but python-minimal is not.  Since
> >>python-2.7-minimal doesn't have a direct depends on python-minimal,
> >>this is allowable (policy 7.2, Depends).
> >>
> >>In order for python2.7-minimal to configure, python-minimal needs to
> >>be at least unpacked to provide /usr/bin/pycompile.  The only way for
> >>python to ensure this is the case is to declare a pre-depends relation
> >>(also policy 7.2).
> >
> >This is inaccurate.
> 
> s/inaccurate/confusing as hell/ :-P
> 
> >A python2.7-minimal pre-depends on python-minimal ensures that
> >python-minimal is unpackaged _and configured_ before python2.7-minimal
> >is unpacked.
> 
> There are three packages involved is this mess:
> 
> python2.7-minimal
> python-minimal
> python
> 
> python depends on python-minimal.
> python2.7-minimal does NOT depend on python or python-minimal (that'd be
> a dependency loop).
> python2.7-minimal tries to run a hook shipped by python, which might not
> work when python is not configured yet.
> 
> Hence the proposed Pre-Depends: python -> python-minimal.

Thanks for making it clearer.

Here's a possible alternate solution:

https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=769106#31

Feedback?

Scott K