During execution of command line "pip instal flair" installation was unsuccesfull and "Building wheel for dartsclone (setup.py) ... error" message appeared.
I tried installing the flair in an anaconda environment with python3.6.9 and pytorch version 1.3.0.
Below is an image of the command prompt showing the error:

Environment:
I am having the exact same problem using windows 10.
python 3.7
pytorch 1.3.0
Same problem with Windows 10. I tried python 3.6 and 3.7, the same issue. I tried to install dartsclone by itself, same error. I installed the C++ runtime also, but it made no difference... in fact, it caused more problems with the DLL, so I deleted it again.
I found a way to fix it, here are the steps (for Windows 10):
1) download the offline installer vs_buildtools.exe from the link on this page: https://www.scivision.dev/python-windows-visual-c-14-required/
2) Follow the installation instructions from this page: https://maofeichen.com/misc/2019/06/20/python-windows-cpp-14-required.html
3) Restart Windows
4) Run Anaconda prompt: pip install dartsclone
5) Install Pytorch
6) Install flair
I had no more installation errors like this and I could import flair on my test code.
Hi,
Facing this same issue on a Mac as well for Flair 0.4.4. Was previously on Flair 0.4.3 and ran into this error while trying to upgrade! Would be great to know if there is a fix for this.
Facing the same issue on Mac for latest flair 0.4.4
Same issue here
Same issue both on Windows 10 and MacOS Catalina, Flair 0.4.4
hi there! i'm facing the same issue on ubuntu 18.04
same issue when trying to install in a container on Google Cloud Run
gcc -pthread -Wno-unused-result -Wsign-compare -DNDEBUG -g -fwrapv -O3 -Wall -fPIC -I./csrc/include -I/usr/local/include/python3.7m -c dartsclone/_dartsclone.cpp -o build/temp.linux-x86_64-3.7/dartsclone/_dartsclone.o
unable to execute 'gcc': No such file or directory
error: command 'gcc' failed with exit status 1
----------------------------------------
ERROR: Failed building wheel for dartsclone
pip install flair==0.4.3 fixed the issue for me
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Most helpful comment
pip install flair==0.4.3fixed the issue for me