Problem when running pip install ./my_package following the xtensor cookiecutter procedure: gcc failed because of pystrides_adaptor.hpp (operator[])

[alaisjc]

(very first issue on github, be indulgent please :) )
When running
(on Sierra 10.12.6, in a conda env in which I previously installed xtensor 0.10.9 and xtensor-python 0.12.1):
pip install ./my_package_created_thanks_to_the_cool_cookiecutter_github_repository (it is named "dyna"),
the following error is returned:
"
Processing ./dyna
Requirement already satisfied: pybind11>=2.0.1 in ./env/lib/python3.6/site-packages (from dyna==0.0.1)
Requirement already satisfied: numpy in ./env/lib/python3.6/site-packages (from dyna==0.0.1)
Installing collected packages: dyna
Running setup.py install for dyna ... error
Complete output from command /Users/jcalais/Prog/workspace/dyna/env/bin/python -u -c "import setuptools, tokenize;file='/private/var/folders/x7/h2yj87t94x9gb6nkm0qg1ck40000gn/T/pip-geq3z0bp-build/setup.py';f=getattr(tokenize, 'open', open)(file);code=f.read().replace('\r\n', '\n');f.close();exec(compile(code, file, 'exec'))" install --record /var/folders/x7/h2yj87t94x9gb6nkm0qg1ck40000gn/T/pip-fon09ep0-record/install-record.txt --single-version-externally-managed --compile:
running install
running build
running build_ext
creating var
creating var/folders
creating var/folders/x7
creating var/folders/x7/h2yj87t94x9gb6nkm0qg1ck40000gn
creating var/folders/x7/h2yj87t94x9gb6nkm0qg1ck40000gn/T
gcc -Wno-unused-result -Wsign-compare -Wunreachable-code -DNDEBUG -g -fwrapv -O3 -Wall -Wstrict-prototypes -I/Users/jcalais/Prog/workspace/dyna/env/include -arch x86_64 -I/Users/jcalais/Prog/workspace/dyna/env/include -arch x86_64 -I/Users/jcalais/Prog/workspace/dyna/env/include/python3.6m -c /var/folders/x7/h2yj87t94x9gb6nkm0qg1ck40000gn/T/tmpxc3s13qj.cpp -o var/folders/x7/h2yj87t94x9gb6nkm0qg1ck40000gn/T/tmpxc3s13qj.o -std=c++14
gcc -Wno-unused-result -Wsign-compare -Wunreachable-code -DNDEBUG -g -fwrapv -O3 -Wall -Wstrict-prototypes -I/Users/jcalais/Prog/workspace/dyna/env/include -arch x86_64 -I/Users/jcalais/Prog/workspace/dyna/env/include -arch x86_64 -I/Users/jcalais/Prog/workspace/dyna/env/include/python3.6m -c /var/folders/x7/h2yj87t94x9gb6nkm0qg1ck40000gn/T/tmp3qr7nhob.cpp -o var/folders/x7/h2yj87t94x9gb6nkm0qg1ck40000gn/T/tmp3qr7nhob.o -fvisibility=hidden
building 'dyna' extension
creating build
creating build/temp.macosx-10.7-x86_64-3.6
creating build/temp.macosx-10.7-x86_64-3.6/src
gcc -Wno-unused-result -Wsign-compare -Wunreachable-code -DNDEBUG -g -fwrapv -O3 -Wall -Wstrict-prototypes -I/Users/jcalais/Prog/workspace/dyna/env/include -arch x86_64 -I/Users/jcalais/Prog/workspace/dyna/env/include -arch x86_64 -I/Users/jcalais/Prog/workspace/dyna/env/include/python3.6m -I/Users/jcalais/.local/include/python3.6m -I/Users/jcalais/Prog/workspace/dyna/env/lib/python3.6/site-packages/numpy/core/include -I/Users/jcalais/Prog/workspace/dyna/env/include -I/Users/jcalais/Prog/workspace/dyna/env/Library/include -I/Users/jcalais/Prog/workspace/dyna/env/include/python3.6m -c src/main.cpp -o build/temp.macosx-10.7-x86_64-3.6/src/main.o -stdlib=libc++ -mmacosx-version-min=10.7 -DVERSION_INFO="0.0.1" -std=c++14 -fvisibility=hidden
In file included from src/main.cpp:3:
In file included from /Users/jcalais/Prog/workspace/dyna/env/include/xtensor/xmath.hpp:20:
In file included from /Users/jcalais/Prog/workspace/dyna/env/include/xtensor/xoperation.hpp:18:
/Users/jcalais/Prog/workspace/dyna/env/include/xtensor/xstrides.hpp:88:26: error: no viable overloaded operator[] for type 'const const xt::pystrides_iterator<8>'
return arg * strides[dim] + raw_data_offset<size_type, S, dim + 1>(strides, args...);
^~~~~~~ ~~~
/Users/jcalais/Prog/workspace/dyna/env/include/xtensor/xstrides.hpp:116:28: note: in instantiation of function template specialization 'xt::detail::raw_data_offset<unsigned long, const xt::pystrides_iterator<8>, 0, unsigned long>' requested here
return detail::raw_data_offset<size_type, const typename S::const_iterator, dim, Arg, Args...>(view, arg, args...);
^
/Users/jcalais/Prog/workspace/dyna/env/include/xtensor/xcontainer.hpp:377:27: note: in instantiation of function template specialization 'xt::data_offset<unsigned long, xt::pystrides_adaptor<8>, 0, unsigned long>' requested here
size_type index = data_offset<size_type>(strides(), static_cast<size_type>(args)...);
^
src/main.cpp:20:13: note: in instantiation of function template specialization 'xt::xcontainer<xt::pyarray >::operator()' requested here
return m(0);
^_

_ **/Users/jcalais/Prog/workspace/dyna/env/include/xtensor-python/pystrides_adaptor.hpp:83:26: note: candidate function not viable: 'this' argument has type 'const const xt::pystrides_iterator<8>', but method is not marked const

        inline reference operator[] (difference_type n) { return *(p_current + n) / N; }
                         ^
1 error generated.
error: command 'gcc' failed with exit status 1**

"

[SylvainCorlay]

@alaisjc sorry for the late reply. This fell between the cracks. This has been solved since you posted the issue. It was broken for a few days as we released xtensor 0.10.9.

[SylvainCorlay]

FYI, the issue was fixed in #101.