pkg/42894: bogus py25-gtk2 package created

[dholland%eecs.harvard.edu@localhost]

>Number:         42894
>Category:       pkg
>Synopsis:       bogus py25-gtk2 package created
>Confidential:   no
>Severity:       serious
>Priority:       medium
>Responsible:    pkg-manager
>State:          open
>Class:          sw-bug
>Submitter-Id:   net
>Arrival-Date:   Sat Feb 27 23:15:00 +0000 2010
>Originator:     David A. Holland
>Release:        NetBSD 4.99.72, pkgsrc 20100226
>Organization:
>Environment:
System: NetBSD valkyrie 4.99.72 NetBSD 4.99.72 (VALKYRIE) #32: Sat Oct  4 
12:25:22 EDT 2008  root@valkyrie:/usr/src/sys/arch/amd64/compile/VALKYRIE amd64
Architecture: x86_64
Machine: amd64
>Description:

I now have a py25-gtk2 package that has the following curious property:
   % pkg_info -n py25-gtk2
   Information for py25-gtk2-2.16.0:

   Requires:
   python26>=2.6
   libglade>=2.6.4nb1
   gtk2+>=2.16.5nb1
   py26-cairo>=1.0.2nb1
   py26-numpy>=1.0
   py26-gobject>=2.15.3

This information appears to be lying:
   % head -1 /usr/pkg/bin/pygtk-demo 
   #! /usr/pkg/bin/python2.5

so it is probably only administratively incorrect and not totally broken.

This package was generated as a result of 'make update' in gtk2 when
driconf was installed. gtk2 is used by py25-gtk2 is used by driconf.
driconf sets PYTHON_VERSIONS_ACCEPTED=25 24, so with the default
python now being 26 the straightforward things don't work.

The update first bombs out partway through because it thinks py25-gtk2
should be installed but it isn't -- this appears to be because it
builds and installs py26-gtk2 instead. Restarting the update allows it
to complete but produces the broken package described above.

>How-To-Repeat:

as previous.

>Fix:

dunno. Probably 'make update' needs to store python version numbers or
extra make defs or something in .DDIR/.DLIST (or something) so as to
accurately rebuild what was previously there.

I'm not sure what will happen if you have both py25-gtk2 and py26-gtk2
installed at once, have nothing pkgsrc knows about that depends on
either, and make update in gtk2; my guess however is that py25-gtk2
will silently evaporate. This is not particularly desirable.

(A complicating issue in this is that py25-gtk2 and py26-gtk2
shouldn't be allowed to be both installed at once, as they conflict
with one another. So do py25-gobject and py26-gobject, for that
matter. This is not however currently declared anywhere.)