Hi Lukasz, Unfortunately this issue doesn't ring a bell at all for me. I don't believe we made any fundamental changes to our DLLs -- all we've done is update OpenSSL versions over this period. We have definitely not introduced any new system dependencies.
Alex On Thu, Apr 15, 2021 at 8:10 AM Łukasz Hanuszczak via Cryptography-dev < cryptography-dev@python.org> wrote: > Hello, > > Our team uses two continuous integration systems that build and package > the Windows distribution of our project. One of them is internal and runs > on Windows 7, the other one is AppVeyor (running Windows 2012, which is > based on Windows 8 best to my knowledge) that works with our open-source > repository on GitHub. > > Both systems use the same script that initializes the virtual environment, > upgrades pip, installs dependencies. The only significant difference is > that the internal pipeline does not have internet access and uses vendored > wheels (though downloaded from PyPI upfront). > > Both systems use exactly the same version of Python and pip, as witnessed > by the output of `pip debug --verbose`: > > ``` > (...) > pip version: pip 21.0.1 from c:\buildenv\python_64\lib\site-packages\pip > (python 3.6) > sys.version: 3.6.8 (tags/v3.6.8:3c6b436a57, Dec 24 2018, 00:16:47) [MSC > v.1916 64 bit (AMD64)] > (...) > ``` > > Unfortunately, after upgrading `cryptography` from 2.9.2 to 3.3.2, the > AppVeyor task started to fail with the following error (during runtime, the > package installation process itself works fine): > > ``` > (...) > File > "c:\buildenv\python_64\lib\site-packages\cryptography\hazmat\backends\openssl\__init__.py", > line 7, in <module> > from cryptography.hazmat.backends.openssl.backend import backend > File > "c:\buildenv\python_64\lib\site-packages\cryptography\hazmat\backends\openssl\backend.py", > line 117, in <module> > from cryptography.hazmat.bindings.openssl import binding > File > "c:\buildenv\python_64\lib\site-packages\cryptography\hazmat\bindings\openssl\binding.py", > line 14, in <module> > from cryptography.hazmat.bindings._openssl import ffi, lib > ImportError: DLL load failed: The specified module could not be found. > ``` > > I have verified that on both systems there is the `cryptography` OpenSSL > DLL available > (`c:\buildenv\python_64\lib\site-packages\cryptography\hazmat\bindings\_openssl.pyd`) > and that it has exactly the same size (3,107,328 bytes). I have also > checked and tried using a newer version of `cryptography` (3.4.7) on > AppVeyor but the problem does not go away. > > Has there been any change in handling of the OpenSSL DLL between 2.9.2 and > 3.3.2? Or is there any other reason that might hint the source of issues? > Is it possible that the DLL itself introduced some new system dependency > that has to be installed first? > > Thank you, > Łukasz > _______________________________________________ > Cryptography-dev mailing list > Cryptography-dev@python.org > https://mail.python.org/mailman/listinfo/cryptography-dev > -- All that is necessary for evil to succeed is for good people to do nothing.
_______________________________________________ Cryptography-dev mailing list Cryptography-dev@python.org https://mail.python.org/mailman/listinfo/cryptography-dev
