Failing installation (due to Apple Silicon?)

[AchrafAmil]

Trying to install on a mac with M1 ship I get the following error at the sudo python3 -m pip install -r requirements.txt --upgrade step

            compiling C sources
            C compiler: clang -Wno-unused-result -Wsign-compare -Wunreachable-code -fno-common -dynamic -DNDEBUG -g -fwrapv -O3 -Wall -isysroot /Library/Developer/CommandLineTools/SDKs/MacOSX12.sdk
      
            compile options: '-DNPY_INTERNAL_BUILD=1 -DHAVE_NPY_CONFIG_H=1 -D_FILE_OFFSET_BITS=64 -D_LARGEFILE_SOURCE=1 -D_LARGEFILE64_SOURCE=1 -DNO_ATLAS_INFO=3 -DHAVE_CBLAS -Ibuild/src.macosx-12-arm64-3.9/numpy/core/src/umath -Ibuild/src.macosx-12-arm64-3.9/numpy/core/src/npymath -Ibuild/src.macosx-12-arm64-3.9/numpy/core/src/common -Inumpy/core/include -Ibuild/src.macosx-12-arm64-3.9/numpy/core/include/numpy -Inumpy/core/src/common -Inumpy/core/src -Inumpy/core -Inumpy/core/src/npymath -Inumpy/core/src/multiarray -Inumpy/core/src/umath -Inumpy/core/src/npysort -I/opt/homebrew/opt/python@3.9/Frameworks/Python.framework/Versions/3.9/include/python3.9 -Ibuild/src.macosx-12-arm64-3.9/numpy/core/src/common -Ibuild/src.macosx-12-arm64-3.9/numpy/core/src/npymath -Ibuild/src.macosx-12-arm64-3.9/numpy/core/src/common -Ibuild/src.macosx-12-arm64-3.9/numpy/core/src/npymath -c'
            extra options: '-faltivec -I/System/Library/Frameworks/vecLib.framework/Headers'
            clang: numpy/core/src/multiarray/alloc.c
            clang: numpy/core/src/multiarray/array_assign_scalar.c
            clang: numpy/core/src/multiarray/buffer.c
            clang: numpy/core/src/multiarray/common.c
            clang: numpy/core/src/multiarray/conversion_utils.c
            clang: numpy/core/src/multiarray/datetime_strings.c
            clang: numpy/core/src/multiarray/descriptor.c
            clang: build/src.macosx-12-arm64-3.9/numpy/core/src/multiarray/einsum.c
            clang: error: the clang compiler does not support 'faltivec', please use -maltivec and include altivec.h explicitly
            clang: numpy/core/src/multiarray/hashdescr.c
            clang: error: the clang compiler does not support 'faltivec', please use -maltivec and include altivec.h explicitly
            clang: error: the clang compiler does not support 'faltivec', please use -maltivec and include altivec.h explicitly
            clang: error: the clang compiler does not support 'faltivec', please use -maltivec and include altivec.h explicitly
            clang: error: the clang compiler does not support 'faltivec', please use -maltivec and include altivec.h explicitly
            clang: error: the clang compiler does not support 'faltivec', please use -maltivec and include altivec.h explicitly
            clang: build/src.macosx-12-arm64-3.9/numpy/core/src/multiarray/lowlevel_strided_loops.c
            clang: numpy/core/src/multiarray/multiarraymodule.c
            clang: error: the clang compiler does not support 'faltivec', please use -maltivec and include altivec.h explicitly
            clang: numpy/core/src/multiarray/nditer_constr.c
            clang: error: the clang compiler does not support 'faltivec', please use -maltivec and include altivec.h explicitly
            clang: numpy/core/src/multiarray/scalarapi.c
            clang: numpy/core/src/multiarray/refcount.c
            clang: numpy/core/src/multiarray/temp_elide.c
            clang: error: the clang compiler does not support 'faltivec', please use -maltivec and include altivec.h explicitly
            clang: error: the clang compiler does not support 'faltivec', please use -maltivec and include altivec.h explicitly
            clang: numpy/core/src/multiarray/vdot.c
            clang: build/src.macosx-12-arm64-3.9/numpy/core/src/umath/loops.c
            clang: error: the clang compiler does not support 'faltivec', please use -maltivec and include altivec.h explicitly
            clang: numpy/core/src/umath/ufunc_object.c
            clang: error: the clang compiler does not support 'faltivec', please use -maltivec and include altivec.h explicitly
            clang: build/src.macosx-12-arm64-3.9/numpy/core/src/umath/scalarmath.c
            clang: error: the clang compiler does not support 'faltivec', please use -maltivec and include altivec.h explicitly
            clang: numpy/core/src/npymath/npy_math.c
            clang: error: the clang compiler does not support 'faltivec', please use -maltivec and include altivec.h explicitly
            clang: error: the clang compiler does not support 'faltivec', please use -maltivec and include altivec.h explicitly
            clang: numpy/core/src/common/npy_longdouble.c
            clang: numpy/core/src/npymath/halffloat.c
            clang: error: the clang compiler does not support 'faltivec', please use -maltivec and include altivec.h explicitly
            clang: error: the clang compiler does not support 'faltivec', please use -maltivec and include altivec.h explicitly
            clang: numpy/core/src/common/numpyos.c
            clang: /private/tmp/pip-install-u53577ol/numpy_febe829ebfa6486c9e24f8c8d9d84ae2/numpy/_build_utils/src/apple_sgemv_fix.c
            clang: error: the clang compiler does not support 'faltivec', please use -maltivec and include altivec.h explicitly
            clang: error: the clang compiler does not support 'faltivec', please use -maltivec and include altivec.h explicitly
            clang: error: the clang compiler does not support 'faltivec', please use -maltivec and include altivec.h explicitly
            clang: error: the clang compiler does not support 'faltivec', please use -maltivec and include altivec.h explicitly
            clang: error: the clang compiler does not support 'faltivec', please use -maltivec and include altivec.h explicitly
            clang: error: the clang compiler does not support 'faltivec', please use -maltivec and include altivec.h explicitly
            clang: error: the clang compiler does not support 'faltivec', please use -maltivec and include altivec.h explicitly
            error: Command "clang -Wno-unused-result -Wsign-compare -Wunreachable-code -fno-common -dynamic -DNDEBUG -g -fwrapv -O3 -Wall -isysroot /Library/Developer/CommandLineTools/SDKs/MacOSX12.sdk -DNPY_INTERNAL_BUILD=1 -DHAVE_NPY_CONFIG_H=1 -D_FILE_OFFSET_BITS=64 -D_LARGEFILE_SOURCE=1 -D_LARGEFILE64_SOURCE=1 -DNO_ATLAS_INFO=3 -DHAVE_CBLAS -Ibuild/src.macosx-12-arm64-3.9/numpy/core/src/umath -Ibuild/src.macosx-12-arm64-3.9/numpy/core/src/npymath -Ibuild/src.macosx-12-arm64-3.9/numpy/core/src/common -Inumpy/core/include -Ibuild/src.macosx-12-arm64-3.9/numpy/core/include/numpy -Inumpy/core/src/common -Inumpy/core/src -Inumpy/core -Inumpy/core/src/npymath -Inumpy/core/src/multiarray -Inumpy/core/src/umath -Inumpy/core/src/npysort -I/opt/homebrew/opt/python@3.9/Frameworks/Python.framework/Versions/3.9/include/python3.9 -Ibuild/src.macosx-12-arm64-3.9/numpy/core/src/common -Ibuild/src.macosx-12-arm64-3.9/numpy/core/src/npymath -Ibuild/src.macosx-12-arm64-3.9/numpy/core/src/common -Ibuild/src.macosx-12-arm64-3.9/numpy/core/src/npymath -c numpy/core/src/multiarray/alloc.c -o build/temp.macosx-12-arm64-3.9/numpy/core/src/multiarray/alloc.o -MMD -MF build/temp.macosx-12-arm64-3.9/numpy/core/src/multiarray/alloc.o.d -faltivec -I/System/Library/Frameworks/vecLib.framework/Headers" failed with exit status 1
            [end of output]
      
        note: This error originates from a subprocess, and is likely not a problem with pip.
      error: legacy-install-failure
      
      × Encountered error while trying to install package.
      ╰─> numpy
      
      note: This is an issue with the package mentioned above, not pip.
      hint: See above for output from the failure.
      [end of output]
  
  note: This error originates from a subprocess, and is likely not a problem with pip.
error: subprocess-exited-with-error

× pip subprocess to install build dependencies did not run successfully.
│ exit code: 1
╰─> See above for output.

note: This error originates from a subprocess, and is likely not a problem with pip.

[gregsadetsky]

Considering that the readme file literally says "(If you are on Mac or Windows, go to hell.)" it's not surprising... :-)

Kidding aside, I'm also on Apple Silicon and got this to run by changing requirements.txt to simply be:

numpy
matplotlib
scipy

i.e. remove the version numbers that currently appear.

I was then able to run pip3 install -r requirements.txt (which I'd recommend over running sudo ..., but YMMV). Cheers

And also -- thank you to the author! The code does work brilliantly (even on a Mac!) :-)

[TechnicallyJackson]

I got around the same error and this fixed it