Incompatible with PyPy

[dan-blanchard]

Steps to reproduce:

1. Try to pip install ssh2-python from a PyPy interpreter.
2. Build will fail:

  cc -O2 -fPIC -Wimplicit -Ilibssh2/include -I/home/travis/virtualenv/pypy-5.4.1/include -c pssh/native/ssh2.c -o build/temp.linux-x86_64-2.7/pssh/native/ssh2.o -O3
  pssh/native/ssh2.c:845:3: error: unknown type name ‘PyBaseExceptionObject’
     PyBaseExceptionObject __pyx_base;
     ^
  pssh/native/ssh2.c:857:3: error: unknown type name ‘PyBaseExceptionObject’
     PyBaseExceptionObject __pyx_base;
     ^
  pssh/native/ssh2.c:917:3: error: unknown type name ‘PyBaseExceptionObject’
     PyBaseExceptionObject __pyx_base;
     ^
  pssh/native/ssh2.c:929:3: error: unknown type name ‘PyBaseExceptionObject’
     PyBaseExceptionObject __pyx_base;
     ^
  pssh/native/ssh2.c:941:3: error: unknown type name ‘PyBaseExceptionObject’
     PyBaseExceptionObject __pyx_base;
     ^
  pssh/native/ssh2.c:953:3: error: unknown type name ‘PyBaseExceptionObject’
     PyBaseExceptionObject __pyx_base;
     ^
  pssh/native/ssh2.c:965:3: error: unknown type name ‘PyBaseExceptionObject’
     PyBaseExceptionObject __pyx_base;
     ^
  pssh/native/ssh2.c:976:3: error: unknown type name ‘PyBaseExceptionObject’
     PyBaseExceptionObject __pyx_base;
     ^
  error: command 'cc' failed with exit status 1

Expected behaviour: Install would succeed.

Actual behaviour: Compile failed as above.

Additional info: libssh2 1.4.3, Ubuntu 14.04, gcc 4.8.4, PyPy 5.4.1

[pkittenis]

Hi there,

Thanks for the interest and the report. The above error is actually from parallel-ssh, but both projects have same issue building on pypy. This is fixed in latest master branches for both projects, releases pending some travis CI issues.

Note that parallel-ssh is not supported on libssh2 < 1.6. ssh2-python by itself works with caveats for known issues on old versions like lack of thread safety. You will need to install a recent version of libssh2 if wanting to use parallel-ssh on pypy, though it builds without errors if just for CI purposes. For production use I'd also recommend PyPy >= 5.9 as its C-API performance has improved a lot.

Also, PyPy does not support distributable wheels yet so no binary wheels are built for pypy. CPython wheels include libssh2 and other dependencies for both parallel-ssh and ssh2-python on all platforms.

[pkittenis]

New versions with this fix published for both projects, including binary wheels for all (CPython) platforms.

[dan-blanchard]

@pkittenis Awesome! Thanks!