Cannot install scipy with pypy (g++ build error)

问题

As of 2020, installing scipy with pypy is possible. (Is it possible to install scipy under pypy?)

pypy3 -mpip install scipy

However, the wheel fails with this kind of error:

  error: Command "g++ -pthread -DNDEBUG -O2 -fPIC -I/tmp/pip-build-env-lfdsn__t/overlay/site-packages/numpy/core/include -I/usr/lib/pypy3/include -c scipy/_lib/_uarray/_uarray_dispatch.cxx -o build/temp.linux-x86_64-3.6/scipy/_lib/_uarray/_uarray_dispatch.o -MMD -MF build/temp.linux-x86_64-3.6/scipy/_lib/_uarray/_uarray_dispatch.o.d -std=c++14 -fvisibility=hidden" failed with exit status 1


  ERROR: Failed building wheel for scipy

Failed to build scipy ERROR: Could not build wheels for scipy which use PEP 517 and cannot be installed directly

Using --no-use-pep517 option give similar result:

    error: Command "g++ -pthread -DNDEBUG -O2 -fPIC -I/home/ezako/.local/lib/pypy3.6/site-packages/numpy/core/include -I/usr/lib/pypy3/include -c scipy/_lib/_uarray/_uarray_dispatch.cxx -o build/temp.linux-x86_64-3.6/scipy/_lib/_uarray/_uarray_dispatch.o -MMD -MF build/temp.linux-x86_64-3.6/scipy/_lib/_uarray/_uarray_dispatch.o.d -std=c++14 -fvisibility=hidden" failed with exit status 1 
ERROR: Command errored out with exit status 1: /usr/bin/pypy3 -u -c 'import sys, setuptools, tokenize; sys.argv[0] = '"'"'/tmp/pip-install-2ffzze2v/scipy/setup.py'"'"'; __file__='"'"'/tmp/pip-install-2ffzze2v/scipy/setup.py'"'"';f=getattr(tokenize, '"'"'open'"'"', open)(__file__);code=f.read().replace('"'"'\r\n'"'"', '"'"'\n'"'"');f.close();exec(compile(code, __file__, '"'"'exec'"'"'))' install --record /tmp/pip-record-8avik0f1/install-record.txt --single-version-externally-managed --user --prefix= --compile --install-headers /home/ezako/.local/include/python3.6/scipy Check the logs for full command output.

Numpy has been sucessfully installed with pypy3.

➜ pypy3 -V
Python 3.6.9 (7.3.0+dfsg-1~ppa1~ubuntu19.04, Dec 26 2019, 11:14:16)
[PyPy 7.3.0 with GCC 8.3.0]

回答1:

Here is what worked for me. I unpacked the latest nightly

pypy -mensurepip
pypy -mpip install --upgrade pip setuptools wheel
pypy -mpip install numpy pybind11
pypy -mpip install scipy

Apparently you need to install pybind11 separately since it does not work properly in a PEP 517 isolated build.

来源：https://stackoverflow.com/questions/60266308/cannot-install-scipy-with-pypy-g-build-error