Python2 only supports being compiled with the VS2008 toolchain (MSVC 9.0; yes the version numbering scheme for MSVC, VS, etc. is convoluted), so that’s expected. Because “no one” has such a toolchain laying around anymore, we just compile a Python here and ship that as a binary drop (it’s made with the prebuilt-python project in the common-superbuild for those curious).