Processing dependencies for sympy==0.7.7.dev0
Searching for mpmath>=0.19
/usr/lib/python2.7/dist-packages/pkg_resources/__init__.py:2512: PEP440Warning: ‘mpmath (0.4.src)’ is being parsed as a legacy, non PEP 440, version. You may find odd behavior and sort order. In particular it will be sorted as less than 0.0. It is recommend to migrate to PEP 440 compatible versions.
…but then goes on to install mpmath-0.19-py2.7.egg.
Rebuilding it doesn’t give the same warnings, so it has resolved this dependency problem.