Re: Bug#736721: Incorrect dependencies

[Jakub Wilk <jwilk@debian.org>]

What attic/crypto.py currently does is:

libcrypto = cdll.LoadLibrary(find_library('crypto'))

But there is no guarantee that find_library('crypto') returns a library 
that is ABI-compatible with the Python code. For the Debian package, a 
quick&dirty fix is to replace the find_library() call with 
'libcrypto.so.1.0.0', then hardcode libssl1.0.0 in Depends. But that of 
course means that the package would need a sourceful upload by the next 
OpenSSL transition.

* Dmitry Shachnev <mitya57@gmail.com>, 2014-02-07, 11:37:
> a simplier solution will be to use existing modules like python-xattr 
> and python-crypto, or writing a Python extension where you can use C 
> code.

Instead of full-blow extension module, you could build a thin C wrapper 
over the interesting libcrypto functions, and then dlopen the wrapper 
instead of the shared library.

But then I notice that attic already contains some extensions modules 
written in Cython, so surely rewritting crypto.py and xattr.py in Cython 
shouldn't be a big deal? :-)

--
Jakub Wilk