[Build-common-hackers] Bug#606530: packages build-depending on python-dev should not be built for non-default python version
doko at debian.org
Thu Dec 9 23:07:36 UTC 2010
A package which build-depends on python-dev and not python-all-dev should only
be built with the default python version.
Assume that you introduce a new python version python2.7 as the default,
python-dev depends on python2.7-dev. Other build-dependencies of the package
may still pull in python2.6 or libpython2.6. Both debhelper and cdbs now try to
build for the intersection of the installed and requested python versions (which
only depends on the installed pythonX.Y packages, but not the pythonX.Y-dev
packages), and then fail to build not finding e.g. headers in the non-default
In the past we had the XS-Python-Version: current attribute for this scenario,
but that was ditched for reasons not entirely understood by me.
Currently both debhelper and cdbs already parse build-dependencies to decide
whether to build -dbg packages or not. So maybe this analysis should be
extended to look for the python-dev b-d, and in this case not to build the
package for the non-default python version, and only build for all supported
python versions in the presence of a python-all-dev dependency (or
python-all-dbg, as this depends on python-all-dev).
This should be addressed before starting a transition to python2.7.
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