[Bug 1485093] Re: python3-distupgrade contains symlink to externally owned directory

[Barry Warsaw]

For example:
https://objectstorage.prodstack4-5.canonical.com/v1/AUTH_77e2ada1e7a84929a74ba3b87153c0ac
/autopkgtest-wily/wily/i386/p/python-pex/20150814_061119@/log.gz

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https://bugs.launchpad.net/bugs/1485093

Title:
  python3-distupgrade contains symlink to externally owned directory

Status in ubuntu-release-upgrader package in Ubuntu:
  New

Bug description:
  python3-distupgrade contains the symlink /usr/lib/python3/dist-
  packages/DistUpgrade/NvidiaDetector which symlinks to
  ../NvidiaDetector.  However /usr/lib/python3/dist-
  packages/NvidiaDetector is owned by ubuntu-drivers-common.

  This causes a problem with at least the pex DEP-8 tests because in
  autopkgtest.ubuntu.com (and clean adt qemu images),
  python3-distupgrade is installed but not ubuntu-drivers-common.  Thus
  when pex invokes pkg_resources' get_resource_stream() you get a
  FileNotFound exception on the former, i.e. dead, symlink.

  Maybe python3-distupgrade should Depend on ubuntu-drivers-common, or
  maybe the symlink itself should be owned by the latter package.  I
  don't think the former should just leave a dangling symlink on the
  system.

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