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[00:01:04] <dstufft> https://bpaste.net/show/997d3b0a8b25 it's working for me here locally

[00:01:23] <dstufft> So there must be a signifcant delta between my environment and yours

[00:03:32] <dstufft> tomprince: if you download the pytest sdist and unpack it and run python setup.py bdist_wheel you don't get any errors correct?

[00:04:04] <tomprince> That works fine.

[00:05:19] <dstufft> hrm

[00:09:53] <tomprince> Also:

[00:09:57] <tomprince> pip install .

[00:10:01] <dstufft> tomprince: can you dump some print statements in your local copy between these lines to see where it's failing? https://github.com/pypa/pip/blob/ff1206fa83782cf7f3b6430e6f96d9795d5e3308/pip/wheel.py#L639-L649 or in the except: return None? (that should perhaps log the error)

[00:10:07] <tomprince> Processing /home/tomprince/src/twisted

[00:10:09] <tomprince> Requirement already satisfied (use --upgrade to upgrade): Twisted==14.0.0 from file:///home/tomprince/src/twisted in /home/tomprince/src/twisted

[00:16:17] <tomprince> dstufft: It hits the 'except: return None'

[00:17:34] <dstufft> tomprince: can you drop a raise in there to see what the exception is?

[00:17:36] <tomprince> [Errno 18] Invalid cross-device link

[00:17:53] <dstufft> ah ha

[00:17:58] <dstufft> I bet it needs to be shutil.move not os.rename

[00:18:09] <dstufft> I bet your /tmp/ and your cache are on different devices

[00:20:28] <tomprince> They are. And that does fix it.

[00:21:03] <dstufft> tomprince: want to submit a PR? Otherwise I'll do it in a few

[00:21:11] <dstufft> I can reproduce the other thing

[00:21:26] <tomprince> I'll leave it to you, I think.

[00:21:43] <dstufft> ok!

[00:21:53] <dstufft> tomprince: thanks for testing the develop branch :)

[00:25:05] <tomprince> np.

[00:25:21] <tomprince> I wanted to try out the auto-wheeling.

[02:29:01] <lifeless> tomprince: hi, looking

[02:31:27] <lifeless> tomprince: ah, I see, yes.