try borg with pypy (and cpyext) - does it work?

[ThomasWaldmann]

[ThomasWaldmann]

Tried borg with current pypy3.5 v5.9:

• borg seems to work (tried some basic commands shortly)
• tests have quite some issues: integrity errors, crashing test workers with pytest-xdist, slow msgpack, ...

[enkore]

5.8 didn't work due to some missing APIs (PyMemoryView_FromMemory).

[ThomasWaldmann]

did a quick test with pypy3.5-6.0.0 (installed on stretch64 vagrant VM via pyenv):

• llfuse does not build
• without fuse, borg builds and tests run, but quite some test failures
• uses the pure python msgpack (unclear whether this is a speed issue on pypy)

[ThomasWaldmann]

one could do a new test using pyfuse3 after #4122 is closed.

[zougloub]

Briefly tested:

pypy3 -m pip install --user git+https://github.com/borgbackup/borg.git

Findings:

• Seemed to work, I tested rcreate, create, rlist, list, mount
• Message Using a pure-python msgpack! This will result in lower performance.

[ThomasWaldmann]

@zougloub Ah, interesting, thanks for testing!

The pure-python msgpack is somewhat expected and maybe not even that slow as it will also be accelerated by pypy.

Wondering whether msgpack could be made working with the faster C code, considering that it also seemed to cope somehow with borg and its C/Cython code.