Bug#798066: autopkgtest: adt-run doesn't find multiarch-renamed Cython compiled libraries

[afif@ghraoui.name (Afif Elghraoui)]

Package: autopkgtest
Version: 3.6jessie1
Severity: normal

Tests fail on Python packages that have Cython-compiled modules. See,
for example, the test log for python-cobra on DebCI [1]. The tests there
fail with the error "solver not found", where the solver is the Cython-compiled
module that has been renamed for multiarch during the package build. However,
those tests are successful when manually installing the package and running the
tests in an updated Unstable chroot.

As another example, one test for python-pysam fails because it can't find
a compiled module [2]:
ERROR: Failure: ImportError (Building module _compile_test failed: ["CompileError: command 'x86_64-linux-gnu-gcc' failed with exit status 1\n"])
The problem was worked-around with a hack in the test run script where a
symlink is created to point to the multiarch-renamed library [3].

I have not tested with the latest version of adt-run, but the problem affects
Stable and the version running on DebianCI. I believe the problem is with this
package because the tests are fine when run manually after installation, even
in a clean chroot.

Many thanks and regards
Afif

1. http://ci.debian.net/data/packages/unstable/amd64/p/python-cobra/20150822_180643.autopkgtest.log.gz

2. http://ci.debian.net/data/packages/unstable/amd64/p/python-pysam/20150806_192500.autopkgtest.log.gz

3. https://anonscm.debian.org/cgit/debian-med/python-pysam.git/tree/debian/tests/run-nose-tests?id=2334c5dec618182d106b2c8ac3042118491ca69b


-- System Information:
Debian Release: 8.1
  APT prefers stable-updates
  APT policy: (500, 'stable-updates'), (500, 'stable')
Architecture: amd64 (x86_64)
Foreign Architectures: i386

Kernel: Linux 3.16.0-4-amd64 (SMP w/12 CPU cores)
Locale: LANG=ar_SA.UTF-8, LC_CTYPE=ar_SA.UTF-8 (charmap=UTF-8)
Shell: /bin/sh linked to /bin/dash
Init: systemd (via /run/systemd/system)

Versions of packages autopkgtest depends on:
ii  apt-utils       1.0.9.8
ii  libdpkg-perl    1.17.25
ii  procps          2:3.3.9-9
ii  python3         3.4.2-2
ii  python3-debian  0.1.27

Versions of packages autopkgtest recommends:
ii  autodep8  0.1

Versions of packages autopkgtest suggests:
pn  lxc          <none>
ii  qemu-system  1:2.1+dfsg-12+deb8u1
ii  qemu-utils   1:2.1+dfsg-12+deb8u1
ii  schroot      1.6.10-1+b1

-- no debconf information