Recursive follow of symlinks

[Sergio Schvezov]

This was not a problem with the previous dh-python, this is what we see with the version reported here:
E: pybuild pybuild:330: test: plugin distutils failed with: [('/<<BUILDDIR>>/snapcraft-2.40+18.04.2/tests/integration/snaps/old-part-src/parts/part-name/src/parts/part-name/src/parts/part-name/src/parts/part-name/src/parts/part-name/src/parts/part-name/src/parts/part-name/src/parts/part-name/src/parts/part-name/src/parts/part-name/src/parts/part-name/src/parts/part-name/src/parts/part-name/src/parts/part-name/src/parts/part-name/src/parts/part-name/src/parts/part-name/src/parts/part-name/src/parts/part-name/src/parts/part-name/src/parts/part-name/src/parts/part-name/src/parts/part-name/src/parts/part-name/src/parts/part-name/src/parts/part-name/src/parts/part-name/src/parts/part-name/src/parts/part-name/src/parts/part-name/src/parts/part-name/src/parts/part-name/src/parts/part-name/src/parts/part-name/src/parts/part-name/src/parts/part-name/src/parts/part-name/src/parts/part-name/src/parts/part-name/src/parts/part-name/src/parts/part-name/src', '/<<BUILDDIR>>/snapcraft-2.40+18.04.2/.pybuild/cpython3_3.6/build/tests/integration/snaps/old-part-src/parts/part-name/src/parts/part-name/src/parts/part-name/src/parts/part-name/src/parts/part-name/src/parts/part-name/src/parts/part-name/src/parts/part-name/src/parts/part-name/src/parts/part-name/src/parts/part-name/src/parts/part-name/src/parts/part-name/src/parts/part-name/src/parts/part-name/src/parts/part-name/src/parts/part-name/src/parts/part-name/src/parts/part-name/src/parts/part-name/src/parts/part-name/src/parts/part-name/src/parts/part-name/src/parts/part-name/src/parts/part-name/src/parts/part-name/src/parts/part-name/src/parts/part-name/src/parts/part-name/src/parts/part-name/src/parts/part-name/src/parts/part-name/src/parts/part-name/src/parts/part-name/src/parts/part-name/src/parts/part-name/src/parts/part-name/src/parts/part-name/src/parts/part-name/src/parts/part-name/src/parts/part-name/src', "[Errno 40] Too many levels of symbolic links: '/<<BUILDDIR>>/snapcraft-2.40+18.04.2/tests/integration/snaps/old-part-src/parts/part-name/src/parts/part-name/src/parts/part-name/src/parts/part-name/src/parts/part-name/src/parts/part-name/src/parts/part-name/src/parts/part-name/src/parts/part-name/src/parts/part-name/src/parts/part-name/src/parts/part-name/src/parts/part-name/src/parts/part-name/src/parts/part-name/src/parts/part-name/src/parts/part-name/src/parts/part-name/src/parts/part-name/src/parts/part-name/src/parts/part-name/src/parts/part-name/src/parts/part-name/src/parts/part-name/src/parts/part-name/src/parts/part-name/src/parts/part-name/src/parts/part-name/src/parts/part-name/src/parts/part-name/src/parts/part-name/src/parts/part-name/src/parts/part-name/src/parts/part-name/src/parts/part-name/src/parts/part-name/src/parts/part-name/src/parts/part-name/src/parts/part-name/src/parts/part-name/src/parts/part-name/src'")]
dh_auto_test: pybuild --test -i python{version} -p 3.6 returned exit code 13

Looks like there is new copy logic in https://launchpadlibrarian.net/361622412/dh-python_2.20170125_3.20180318.diff.gz (not mentioned on the changelog)

ProblemType: Bug
DistroRelease: Ubuntu 18.04
Package: dh-python 3.20180318
ProcVersionSignature: User Name 4.15.0-10.11-generic 4.15.2
Uname: Linux 4.15.0-10-generic x86_64
ApportVersion: 2.20.8-0ubuntu10
Architecture: amd64
Date: Thu Mar 22 19:29:00 2018
PackageArchitecture: all
ProcEnviron:
 TERM=xterm-256color
 PATH=(custom, no user)
 LANG=C.UTF-8
 SHELL=/bin/bash
SourcePackage: dh-python
UpgradeStatus: No upgrade log present (probably fresh install)

[Stefano Rivera (stefanor)]

Please can you describe how to reproduce this bug?

[Launchpad Janitor (janitor)]

[Expired for dh-python (Ubuntu) because there has been no activity for 60 days.]