Hey there, I have just started the build in a fresh conda env and it is still undergoing.
Meanwhile, I tried to install back torch==1.0.1 using pip3 (in my local)
And this is what I get
Requirement already satisfied: torch in /home/arunava/Projects/Cloned/pytorch (1.1.0a0+90b8552)

WOOAAAH!! So I did install it!
Excited as f@$k I then tried to import it in by running it in  ipython3
ModuleNotFoundError                       Traceback (most recent call last)
<ipython-input-1-eb42ca6e4af3> in <module>
----> 1 import torch

ModuleNotFoundError: No module named 'torch'

This looked like a common thing and stackoverflow to the rescue
I ran sudo ipython
>>> import torch
/usr/bin/python3: symbol lookup error: /home/arunava/Projects/Cloned/pytorch/torch/lib/libtorch_python.so: undefined symbol: PyThread_tss_alloc

and ipython3 exits!!
I am not sure why this happens.
The build is now running in conda env and I am very hopeful that it will work! I will update. Meanwhile let me know if you know some fixes of the above issue, although won’t be required if the build in the conda env works.