numpy fails to load with blis installed, need a fix with install_name_tool

[barracuda156]

Error looks like this:

copying lib/matplotlib/mpl-data/images/subplots-symbolic.svg -> build/lib.macosx-10.6-ppc-cpython-311/matplotlib/mpl-data/images
running build_ext
Traceback (most recent call last):
  File "/opt/local/Library/Frameworks/Python.framework/Versions/3.11/lib/python3.11/site-packages/numpy/core/__init__.py", line 23, in <module>
    from . import multiarray
  File "/opt/local/Library/Frameworks/Python.framework/Versions/3.11/lib/python3.11/site-packages/numpy/core/multiarray.py", line 10, in <module>
    from . import overrides
  File "/opt/local/Library/Frameworks/Python.framework/Versions/3.11/lib/python3.11/site-packages/numpy/core/overrides.py", line 6, in <module>
    from numpy.core._multiarray_umath import (
ImportError: dlopen(/opt/local/Library/Frameworks/Python.framework/Versions/3.11/lib/python3.11/site-packages/numpy/core/_multiarray_umath.cpython-311-darwin.so, 2): Library not loaded: @rpath/libblis.4.dylib
  Referenced from: /opt/local/Library/Frameworks/Python.framework/Versions/3.11/lib/python3.11/site-packages/numpy/core/_multiarray_umath.cpython-311-darwin.so
  Reason: image not found

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
  File "/opt/local/var/macports/build/_opt_local_var_macports_sources_rsync.macports.org_macports_release_tarballs_ports_python_py-matplotlib/py311-matplotlib/work/matplotlib-3.5.3/setup.py", line 273, in <module>
    setup(  # Finally, pass this all along to setuptools to do the heavy lifting.
  File "/opt/local/Library/Frameworks/Python.framework/Versions/3.11/lib/python3.11/site-packages/setuptools/__init__.py", line 107, in setup
    return distutils.core.setup(**attrs)
           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/opt/local/Library/Frameworks/Python.framework/Versions/3.11/lib/python3.11/site-packages/setuptools/_distutils/core.py", line 185, in setup
    return run_commands(dist)
           ^^^^^^^^^^^^^^^^^^
  File "/opt/local/Library/Frameworks/Python.framework/Versions/3.11/lib/python3.11/site-packages/setuptools/_distutils/core.py", line 201, in run_commands
    dist.run_commands()
  File "/opt/local/Library/Frameworks/Python.framework/Versions/3.11/lib/python3.11/site-packages/setuptools/_distutils/dist.py", line 969, in run_commands
    self.run_command(cmd)
  File "/opt/local/Library/Frameworks/Python.framework/Versions/3.11/lib/python3.11/site-packages/setuptools/dist.py", line 1244, in run_command
    super().run_command(command)
  File "/opt/local/Library/Frameworks/Python.framework/Versions/3.11/lib/python3.11/site-packages/setuptools/_distutils/dist.py", line 988, in run_command
    cmd_obj.run()
  File "/opt/local/Library/Frameworks/Python.framework/Versions/3.11/lib/python3.11/site-packages/setuptools/_distutils/command/build.py", line 131, in run
    self.run_command(cmd_name)
  File "/opt/local/Library/Frameworks/Python.framework/Versions/3.11/lib/python3.11/site-packages/setuptools/_distutils/cmd.py", line 318, in run_command
    self.distribution.run_command(command)
  File "/opt/local/Library/Frameworks/Python.framework/Versions/3.11/lib/python3.11/site-packages/setuptools/dist.py", line 1244, in run_command
    super().run_command(command)
  File "/opt/local/Library/Frameworks/Python.framework/Versions/3.11/lib/python3.11/site-packages/setuptools/_distutils/dist.py", line 987, in run_command
    cmd_obj.ensure_finalized()
  File "/opt/local/Library/Frameworks/Python.framework/Versions/3.11/lib/python3.11/site-packages/setuptools/_distutils/cmd.py", line 111, in ensure_finalized
    self.finalize_options()
  File "/opt/local/var/macports/build/_opt_local_var_macports_sources_rsync.macports.org_macports_release_tarballs_ports_python_py-matplotlib/py311-matplotlib/work/matplotlib-3.5.3/setup.py", line 78, in finalize_options
    self.distribution.ext_modules[:] = [
                                       ^
  File "/opt/local/var/macports/build/_opt_local_var_macports_sources_rsync.macports.org_macports_release_tarballs_ports_python_py-matplotlib/py311-matplotlib/work/matplotlib-3.5.3/setup.py", line 78, in <listcomp>
    self.distribution.ext_modules[:] = [
                                       ^
  File "/opt/local/var/macports/build/_opt_local_var_macports_sources_rsync.macports.org_macports_release_tarballs_ports_python_py-matplotlib/py311-matplotlib/work/matplotlib-3.5.3/setupext.py", line 393, in get_extensions
    add_numpy_flags(ext)
  File "/opt/local/var/macports/build/_opt_local_var_macports_sources_rsync.macports.org_macports_release_tarballs_ports_python_py-matplotlib/py311-matplotlib/work/matplotlib-3.5.3/setupext.py", line 521, in add_numpy_flags
    import numpy as np
  File "/opt/local/Library/Frameworks/Python.framework/Versions/3.11/lib/python3.11/site-packages/numpy/__init__.py", line 141, in <module>
    from . import core
  File "/opt/local/Library/Frameworks/Python.framework/Versions/3.11/lib/python3.11/site-packages/numpy/core/__init__.py", line 49, in <module>
    raise ImportError(msg)
ImportError: 

IMPORTANT: PLEASE READ THIS FOR ADVICE ON HOW TO SOLVE THIS ISSUE!

Importing the numpy C-extensions failed. This error can happen for
many reasons, often due to issues with your setup or how NumPy was
installed.

We have compiled some common reasons and troubleshooting tips at:

    https://numpy.org/devdocs/user/troubleshooting-importerror.html

Please note and check the following:

  * The Python version is: Python3.11 from "/opt/local/Library/Frameworks/Python.framework/Versions/3.11/bin/python3.11"
  * The NumPy version is: "1.24.1"

and make sure that they are the versions you expect.
Please carefully study the documentation linked above for further help.

Original error was: dlopen(/opt/local/Library/Frameworks/Python.framework/Versions/3.11/lib/python3.11/site-packages/numpy/core/_multiarray_umath.cpython-311-darwin.so, 2): Library not loaded: @rpath/libblis.4.dylib
  Referenced from: /opt/local/Library/Frameworks/Python.framework/Versions/3.11/lib/python3.11/site-packages/numpy/core/_multiarray_umath.cpython-311-darwin.so
  Reason: image not found

Command failed:  cd "/opt/local/var/macports/build/_opt_local_var_macports_sources_rsync.macports.org_macports_release_tarballs_ports_python_py-matplotlib/py311-matplotlib/work/matplotlib-3.5.3" && /opt/local/Library/Frameworks/Python.framework/Versions/3.11/bin/python3.11 setup.py --no-user-cfg build 
Exit code: 1

I have found this: ​https://github.com/numpy/numpy/issues/14180 ​https://github.com/spack/spack/pull/12869

[barracuda156]

Or maybe it should be prevented from linking to blis? After fixing dylib path I got another error:

Original error was: dlopen(/opt/local/Library/Frameworks/Python.framework/Versions/3.11/lib/python3.11/site-packages/numpy/core/_multiarray_umath.cpython-311-darwin.so, 2): Symbol not found: _cblas_zdotc_sub
  Referenced from: /opt/local/Library/Frameworks/Python.framework/Versions/3.11/lib/python3.11/site-packages/numpy/core/_multiarray_umath.cpython-311-darwin.so
  Expected in: dynamic lookup

[barracuda156]

I think this happens because our blis does not contain lapack. However, Numpy should make sure not to link to some random BLAS to begin with.

[reneeotten (Renee Otten)]

fixed in this commit