Opened at 2012-07-10T22:58:09Z

Last modified at 2020-11-30T13:46:08Z

#1792 closed defect

make Tahoe-LAFS work under PyPy — at Version 2

Reported by: davidsarah Owned by:
Priority: normal Milestone: eventually
Component: packaging Version: 1.9.2
Keywords: pypy cpyext packaging pycryptopp Cc: tahoe-lafs.org@…
Launchpad Bug:

Description (last modified by hawkowl)

If I remember correctly, the main obstacle was extension modules. Current PyPy? ​supports extension modules compiled for CPython, but is not 100% compatible with the CPython extension API.

​Twisted apparently now builds correctly with PyPy.

Change History (2)

comment:1 Changed at 2012-07-11T21:31:16Z by davidsarah

fijal wrote in #pypy:

davidsarah: pyopenssl works as long as you don't have multiple threads

comment:2 Changed at 2015-07-29T04:10:16Z by hawkowl

  • Description modified (diff)

From an IRC discussion about why it doesn't work (pycryptopp), I decided to look at Cryptography and pynacl, and what uses pycryptopp in tahoe.

  • ed25519 is supported by pynacl.
  • AES is supported by Cryptography.
  • RSA keys (in many formats) are supported by Cryptography.
  • SHA256 hashes are supported by Cryptography.

Zooko mentioned that Cryptography has a hard dependency on OpenSSL (which he rightfully dislikes) but my unqualified self thinks that it might not be so bad. Worth a shot, maybe? I have (some) time on Tuesday's PyCon? AU sprint session to maybe take a hack on it, if the maintainers don't find the current-hard-dep on OpenSSL a dealbreaker.

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