On Fri, Nov 29, 2019 at 1:28 AM Jacob Alexander <[email protected]>
wrote:

> I'm happy to upstream (though I've taken some more extreme decisions in
> some areas in regards to prior compatibility).
> Unfortunately, I don't believe there's an active maintainer for the
> pycapnp github repo so it's currently a bit futile. :(
>

A few months ago, Colin Jermain (https://github.com/cjermain; I don't seem
to have his e-mail) offered to help with pycapnp maintenance, so I gave him
commit rights. It looks like he did some work but hasn't touched it in a
few months, so I'm not sure if he intends to keep working on it. If someone
else wants to take over maintainership I'm happy to help get the right
permissions set up.

-Kenton


>
> On Friday, November 29, 2019 at 12:48:46 AM UTC-8, pepijn de vos wrote:
>>
>> Thanks for the link.
>> While I'm not actually interested in RPC or async at all, this fork
>> actually works.
>> Any chance this will be upstreamed?
>>
>> Pepijn
>>
>> On Fri, Nov 29, 2019 at 7:27 AM Jacob Alexander <[email protected]>
>> wrote:
>>
>>> While I haven't gotten all the tests working yet (there are some issues
>>> with some of the timer functions on Windows it seems), I spent a bunch of
>>> time getting asyncio working with pycapnp (it was the most reasonable way
>>> to get native Python TLS support working).
>>> I've fixed a lot of bugs, removed a lot of the deprecated C++ functions
>>> (the warnings were hiding a lot of serious issues).
>>>
>>> https://github.com/haata/pycapnp-async
>>>
>>> I'll be using this for a cross-platform tool I've been working so I'll
>>> at least be maintaining it for basic client functionality (server stuff
>>> works as well, minus a few Windows tests). My main use case is a TLS
>>> connection between a Rust server and Python clients (this is currently
>>> working using tokio-rustls).
>>>
>>> It does require Python 3.7 and higher (3.8 also works). I discovered
>>> some bugs in asyncio that make porting difficult to 3.5 and 3.6 (though
>>> it's likely possible with a bunch of effort).
>>>
>>> -HaaTa
>>>
>>> On Thursday, November 28, 2019 at 6:24:08 AM UTC-8, Pepijn de Vos wrote:
>>>>
>>>> Actually, it appears that the library contains a pointer, whereas the
>>>> Python lib tries to use a reference.
>>>> I'm not sure where this difference came from, but it's clearly
>>>> incorrect.
>>>>
>>>> (env) [apicula]$ nm -gD /usr/lib/libkj-async-0.7.0.so | grep
>>>> TransformPromiseNodeBase
>>>> 000000000002b1e0 T
>>>> _ZN2kj1_24TransformPromiseNodeBase7onReadyEPNS0_5EventE
>>>> (env) [apicula]$ c++filt
>>>> _ZN2kj1_24TransformPromiseNodeBase7onReadyEPNS0_5EventE
>>>> kj::_::TransformPromiseNodeBase::onReady(kj::_::Event*)
>>>> (env) [apicula]$ c++filt
>>>> _ZN2kj1_24TransformPromiseNodeBase7onReadyERNS0_5EventE
>>>> kj::_::TransformPromiseNodeBase::onReady(kj::_::Event&)
>>>>
>>>>
>>>>
>>>> On Thursday, 28 November 2019 15:17:40 UTC+1, Pepijn de Vos wrote:
>>>>>
>>>>> Hey all,
>>>>>
>>>>> I'm exploring serialization libraries, so I installed the Python lib
>>>>> and got the following error
>>>>>
>>>>> ImportError: [...]capnp.cpython-38-x86_64-linux-gnu.so: undefined
>>>>> symbol: _ZN2kj1_24TransformPromiseNodeBase7onReadyERNS0_5EventE
>>>>>
>>>>> Which is definitely a thing, and has been for two years:
>>>>> https://github.com/capnproto/capnproto/blame/master/c%2B%2B/src/kj/async-inl.h#L392
>>>>>
>>>>> It also seems to be linked correctly
>>>>>
>>>>> $ ldd [...]capnp.cpython-38-x86_64-linux-gnu.so
>>>>>     linux-vdso.so.1 (0x00007ffe675cf000)
>>>>>     libcapnpc-0.7.0.so => /usr/lib/libcapnpc-0.7.0.so (
>>>>> 0x00007f7dc5173000)
>>>>>     libcapnp-rpc-0.7.0.so => /usr/lib/libcapnp-rpc-0.7.0.so (
>>>>> 0x00007f7dc5090000)
>>>>>     libcapnp-0.7.0.so => /usr/lib/libcapnp-0.7.0.so (
>>>>> 0x00007f7dc4ff4000)
>>>>>     libkj-async-0.7.0.so => /usr/lib/libkj-async-0.7.0.so (
>>>>> 0x00007f7dc4f60000)
>>>>>     libkj-0.7.0.so => /usr/lib/libkj-0.7.0.so (0x00007f7dc4eda000)
>>>>>     libstdc++.so.6 => /usr/lib/libstdc++.so.6 (0x00007f7dc4cf0000)
>>>>>     libgcc_s.so.1 => /usr/lib/libgcc_s.so.1 (0x00007f7dc4cd4000)
>>>>>     libc.so.6 => /usr/lib/libc.so.6 (0x00007f7dc4b0d000)
>>>>>     libpthread.so.0 => /usr/lib/libpthread.so.0 (0x00007f7dc4aeb000)
>>>>>     libm.so.6 => /usr/lib/libm.so.6 (0x00007f7dc49a5000)
>>>>>     /usr/lib64/ld-linux-x86-64.so.2 (0x00007f7dc540e000)
>>>>>
>>>>>
>>>>> So the system library version is 0.7, and the latest Python library is
>>>>> 0.6.4, not sure if the versions are just mismatched somehow.
>>>>> I tried installing from git with the same result, is the Python
>>>>> library just outdated?
>>>>> Or maybe the Arch package is just broken, because it doesn't contain
>>>>> the required symbol?
>>>>>
>>>>> Cheers,
>>>>> Pepijn
>>>>>
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