Bug#806100: pyviennacl: FTBFS when built with dpkg-buildpackage -A (No such file or directory)

[Santiago Vila]

Package: src:pyviennacl
Version: 1.0.2+dfsg-1
User: sanvila at debian.org
Usertags: binary-indep
Severity: important

Dear maintainer:

I tried to build this package with "dpkg-buildpackage -A"
(i.e. only architecture-independent packages), and it failed:

--------------------------------------------------------------------------------
[...]
 fakeroot debian/rules binary-indep
dh binary-indep --with python2,python3 --buildsystem=pybuild
   dh_testroot -i -O--buildsystem=pybuild
   dh_prep -i -O--buildsystem=pybuild
   debian/rules override_dh_auto_install-indep
make[1]: Entering directory '/<<BUILDDIR>>/pyviennacl-1.0.2+dfsg'
PYTHONPATH=debian/python-pyviennacl/usr/lib/python2.7/dist-packages python doc/build-doc.py
Running Sphinx v1.3.1
making output directory...

Exception occurred:
  File "conf.py", line 81, in <module>
    from pyviennacl import __version__ as version
ImportError: No module named pyviennacl
The full traceback has been saved in /tmp/sphinx-err-c_X_Wx.log, if you want to report the issue to the developers.
Please also report this if it was a user error, so that a better error message can be provided next time.
A bug report can be filed in the tracker at <https://github.com/sphinx-doc/sphinx/issues>. Thanks!
debian/rules:39: recipe for target 'override_dh_auto_install-indep' failed
make[1]: *** [override_dh_auto_install-indep] Error 1
make[1]: Leaving directory '/<<BUILDDIR>>/pyviennacl-1.0.2+dfsg'
debian/rules:18: recipe for target 'binary-indep' failed
make: *** [binary-indep] Error 2
dpkg-buildpackage: error: fakeroot debian/rules binary-indep gave error exit status 2
--------------------------------------------------------------------------------

Sorry not to have a fix, as I am reporting many bugs similar to
this one, but I can give some general hints:

* If all the arch-independent packages are dummy transitional packages
released with jessie, the easy fix is to drop them now.
 
* If not, debian/rules should be modified so that the binary-indep
target works in all cases, even when binary-arch is not used (this is
what the "Architecture: all" autobuilder does). For that:
    
* If you are using debhelper, you might want to use options -a and -i
for dh_* commands so that they do not act on packages they do not
have to act.

* Also, if you are using dh, the (independently) optional targets
override_dh_foo-arch and override_dh_foo-indep (for several values
of "foo") may be useful to write a debian/rules which behaves exactly
as desired.


After checking that both "dpkg-buildpackage -A" and "dpkg-buildpackage -B"
work properly, this package will be suitable to be uploaded in
source-only form if you wish (you might want to try it).

Thanks.