Building module pyirt.util.clib failed about pyirt

[junchenfeng]

I think it is the problem of cython, not of pyirt.

[bryketos]

junchenfeng, do you have any advice on this error? I got this with some environments but not others. Thanks

[junchenfeng]

I ran into a similar problem earlier (although I am not sure that it is the same problem) when the user does not have root access because cython build creates and writes into /tmp folder.

I don't know what the Devops guy did to fix the issue.

PS: from the trace stack and a bit of google, I think it may also has something to do with clang installation.

[bryketos]

Thanks Junchen, I can try compiling this on an EC2 instance as root or as other users if you would like some additional testing. It has worked on one EC2 instance but not another which is puzzling. I hope I can make this pyirt package work because the other option is the mirt package for R which doesn't handle sparsity so well (convergence failures with large, sparse dataframes) and flat-out requires in-memory data structures.

[junchenfeng]

It also depends the OS version. Ubuntu and Mac are probably fine, but Centos 6 and Centos 7 are totally different beasts. If it works on EC2 instance, I bet the problem is the system environment, which is tricky.

I would suggest asking the operation manager to install Cython for python 2.7 and 3.5, then use pipenv to install pyirt. If that fails, then we will do something.

The pyirt package should not be in the business of operations.

[junchenfeng]

@SiddhantAgarwal @bryketos Our new colleague also runs into this exact problem with his new mac. We strongly suspect it is because Cython requires Xcode to be installed. As a simple test, try run a c program that imports math.h. If that fails, it means you need Xcode. For more, see here

[junchenfeng]

Guys, it is our fault. After Cython upgrade, the previous clib.pyx does not compile properly. We are in the process of fixing it

[junchenfeng]

fixed at #12