Gentoo's Bugzilla –
Attachment 507268 Details for
Bug 639276dev-python/matplotlib with dev-lang/python-3.5 - Fatal Error: Mismatch between the program and library build versions detected. The library used 3.0 (wchar_t,compiler with C++ ABI 1010,wx containers,compatible with 2.8), and wxPython used 3.0 (wchar_t,com