Public bug reported: python-nacl and python3-nacl are currently broken on Wily.
I believe the issue is it needs to be rebuild against python-cffi 1.1.2-1ubuntu2, although I'm not that familiar with CFFI. This is easy to test with: $ python3 -c "import nacl.public" Which will give you this trace: Traceback (most recent call last): ... PermissionError: [Errno 13] Permission denied: '/usr/lib/python3/dist-packages/nacl/_lib/__pycache__/_cffi__xec632e8ax2d69d42f.c' I'm guessing that "xec632e8ax2d69d42f" is a hash of some files in python3-cffi or libsodium, or possibly a hash of both. But these are the built extensions installed by python3-nacl: _cffi__x88f29b3bxa11bf422.cpython-34m-x86_64-linux-gnu.so _cffi__x42031028xa11bf422.cpython-35m-x86_64-linux-gnu.so ProblemType: Bug DistroRelease: Ubuntu 15.10 Package: python3-nacl 0.2.3-2build1 ProcVersionSignature: Ubuntu 4.1.0-3.3-generic 4.1.3 Uname: Linux 4.1.0-3-generic x86_64 NonfreeKernelModules: nvidia ApportVersion: 2.18-0ubuntu5 Architecture: amd64 CurrentDesktop: Unity Date: Tue Jul 28 18:26:52 2015 SourcePackage: python-nacl UpgradeStatus: No upgrade log present (probably fresh install) ** Affects: python-nacl (Ubuntu) Importance: Undecided Status: New ** Tags: amd64 apport-bug wily -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1479163 Title: Wily: currently broken, needs rebuild? To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/python-nacl/+bug/1479163/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs