Installing from wheel, no pyRipser

[scikit-tda]

Installing from wheel, no pyRipser

[sauln]

There were no errors when you installed it from the wheel? It looks like you've installed it using the VS compiler instead of minGW. Do you have minGW set up?

[catanzaromj]

No errors from wheel... And I had minGW installed when pip install ripser bombed.

[sauln]

Could you try following these steps for the install. They work on Appveyor with conda:

ripser.py/appveyor.yml

Lines 26 to 39 in 6ae34fc

	install:
	- "set PATH=%MINICONDA%;%MINICONDA%\\Scripts;%PATH%"
	- python --version
	- python -c "import sys,platform,struct;print(sys.platform, platform.machine(), struct.calcsize('P') * 8, )"
	- conda config --set always_yes yes --set changeps1 no
	- conda update -q conda
	- conda info -a
	- "conda create -q -n test-environment
	python=%PYTHON_VERSION% numpy pandas scipy matplotlib pytest"
	- activate test-environment
	- conda install libpython m2w64-toolchain cython
	- echo [build] > %CONDA_PREFIX%\Lib\distutils\distutils.cfg
	- echo compiler = mingw32 >> %CONDA_PREFIX%\Lib\distutils\distutils.cfg
	- python setup.py install

Some of the steps might not be necessary, but I think the lines

  - conda update -q conda 
  - conda install libpython m2w64-toolchain cython
  - echo [build] > %CONDA_PREFIX%\Lib\distutils\distutils.cfg
  - echo compiler = mingw32 >> %CONDA_PREFIX%\Lib\distutils\distutils.cfg

will be necessary before installation. The %CONDA_PREFIX% should be changed to where ever your conda is installed.

[catanzaromj]

So that totally worked! Could you shed some light on why that succeeded but pip install ripser or the wheel file didn't?

[sauln]

That's great! I'm glad it worked. I'm still trying to figure out how conda+windows+mingw play together, but I think what's happening here is you are explicitly telling conda to use mingw compiler.

For sake of reproducability, could you share the exact commands you made to get the install to work? This process needs much better documentation.

[catanzaromj]

After working on the install on my own and a couple other windows machines, I think the issue is exactly as you say--forcing conda to use mingw to compile as opposed to whatever the default setting is. The errors I came across installing ripser before this particular one I asked about were related to general C++/Cython dependent issues, like pip installing steem, misaka, or related to missing/invalid cl.exe.

In terms of reproducibility, I did exactly the steps you mentioned above in the larger scroll box, not just the four lines you highlighted, except the first--I didn't modify the path. The same commands also worked in my standard environment, so I didn't have to create a new test-environment.

[sauln]

Perfect! Thank you.