Pycraf and Python 3.8

[cbowers1020]

When I attempted to install Pycraf in my Python 3.8 conda environment via: conda install pycraf

I receive the following error:

Specifications:

  - pycraf -> python[version='>=3.6,<3.7.0a0|>=3.7,<3.8.0a0']

Your python: python=3.8

It appears Pycraf is not compatible with Python 3.8? On the install page it indicates 3.7 or later

[bwinkel]

Which platform are you working on? pycraf conda packages are available for python 3.7-3.9 on Windows and Linux, but on MacOS, I could only get 3.6-3.7 to work. 😢

[cbowers1020]

Ah, that would be why. I am using MacOS.

I have tried with pip, but I get this error, so I tried conda:

gcc -Wno-unused-result -Wsign-compare -Wunreachable-code -DNDEBUG -g -fwrapv -O3 -Wall -Wstrict-prototypes -I/Users/calebbowers/opt/anaconda3/envs/py38/include -arch x86_64 -I/Users/calebbowers/opt/anaconda3/envs/py38/include -arch x86_64 -I/Users/calebbowers/opt/anaconda3/envs/py38/lib/python3.8/site-packages/numpy/core/include -I/Users/calebbowers/opt/anaconda3/envs/py38/include/python3.8 -c pycraf/pathprof/cyimt.c -o build/temp.macosx-10.9-x86_64-3.8/pycraf/pathprof/cyimt.o -O3 -mmacosx-version-min=10.7 -fopenmp=libomp -Wp,-w -Wno-unused-function -Wp,-w -Wno-unused-function -Wp,-w -Wno-unused-function
    clang: error: unsupported argument 'libomp' to option 'fopenmp='
    error: command 'gcc' failed with exit status 1

I have tried installing llvm in conda, but that has not fixed it either.

[bwinkel]

Yes, have a look at the manual, if you want to try to install from source (which is what pip would be doing). The vanilla compiler on MacOS (clang), unfortunately, doesn't come with OpenMP, which is the reason for all the trouble.

[cbowers1020]

Ah, I was attempting to install libomp rather than openmp via conda...my apologies. I can close this.

[bwinkel]

By-the-way, on newer conda installations, you can install the proper compilers via conda, as well. For building the packages, I do something like

conda install -c conda-forge clang_osx-64 clangxx_osx-64 llvm-openmp openmp cctools==921 ld64==409.12

Maybe this helps...

[cbowers1020]

I will try that out--thanks!

[cbowers1020]

When i attempt to install the above, I get:

Downloading and Extracting Packages
nomkl-2.0            | 3 KB      | ################################################################################################################################################################################################################# | 100%
Preparing transaction: done
Verifying transaction: done
Executing transaction: done
ERROR: This cross-compiler package contains no program /Users/calebbowers/opt/anaconda3/envs/py38/bin/x86_64-apple-darwin13.4.0-clang++
ERROR: deactivate_clangxx_osx-64.sh failed, see above for details
ERROR: This cross-compiler package contains no program /Users/calebbowers/opt/anaconda3/envs/py38/bin/x86_64-apple-darwin13.4.0-clang
ERROR: deactivate_clang_osx-64.sh failed, see above for details
ERROR: This cross-compiler package contains no program /Users/calebbowers/opt/anaconda3/envs/py38/bin/x86_64-apple-darwin13.4.0-clang
ERROR: activate_clang_osx-64.sh failed, see above for details
ERROR: This cross-compiler package contains no program /Users/calebbowers/opt/anaconda3/envs/py38/bin/x86_64-apple-darwin13.4.0-clang++
ERROR: activate_clangxx_osx-64.sh failed, see above for details

And, there are no more details "above"

[bwinkel]

Unfortunately, I have no clue. I don't own a MacOS machine, which is also why, I couldn't figure out, how to create the conda packages. I'll try from time to time. Perhaps, it will be fixed after some upstream changes in the conda toolchain...