Issue with NumPy, macOS 11 Big Sur, Python 3.9.1 Does pipenv not use the latest pip?

People are probably already aware of this issue, but adding my $0.02 as to what I think may be going on.

In a nutshell: NumPy fails to build on OS 11 and python 3.9.1. The error message is attached below, but NumPy is installed and works. (you can import numpy as np from a python interpreter) However, if you try to import numpy in a notebook, you get an error message saying that numpy is using a buggy “accelerate” backend.

The error about the backend occurs when numpy is being built from source incorrectly instead of using the provided wheel. That known issue was supposedly fixed in a pip upgrade (20.3). However, I get the same error below, even when I have updated pip to 20.3.

However, when i create a new pipenv environment, it defaults to pip 20.2. So my guess is that even if I subsequently update pip to 20.3, that pipenv install numpy is using the old version of pip.

Can anybody confirm and/or offer a workaround?

(blog)  shane@Olympus  ~/github/blog   dev ●  pipenv install numpy
Installing numpy...
Adding numpy to Pipfile's [packages]...
✔ Installation Succeeded
Pipfile.lock (16c839) out of date, updating to (49bf85)...
Locking [dev-packages] dependencies...
Locking [packages] dependencies...
Building requirements...
Resolving dependencies...
✘ Locking Failed!
ERROR:pip.subprocessor:Command errored out with exit status 1:
 command: /Users/shane/.local/share/virtualenvs/blog-kKpxKzEP/bin/python /usr/local/Cellar/pipenv/2020.11.15/libexec/lib/python3.9/site-packages/pipenv/patched/notpip/_vendor/pep517/_in_process.py prepare_metadata_for_build_wheel /var/folders/yz/l6qh44196z70lty4rs6dm3nc0000gn/T/tmpk03mt0_f
     cwd: /private/var/folders/yz/l6qh44196z70lty4rs6dm3nc0000gn/T/pip-resolver-id_2dgms/numpy
Complete output (209 lines):
Running from numpy source directory.
setup.py:480: UserWarning: Unrecognized setuptools command, proceeding with generating Cython sources and expanding templates
  run_build = parse_setuppy_commands()
Cythonizing sources
Processing numpy/random/_bounded_integers.pxd.in
Processing numpy/random/_philox.pyx
Processing numpy/random/_bounded_integers.pyx.in
Processing numpy/random/_sfc64.pyx
Processing numpy/random/_mt19937.pyx
Processing numpy/random/bit_generator.pyx
Processing numpy/random/mtrand.pyx
Processing numpy/random/_generator.pyx
Processing numpy/random/_pcg64.pyx
Processing numpy/random/_common.pyx
blas_opt_info:
blas_mkl_info:
customize UnixCCompiler
  libraries mkl_rt not found in ['/Users/shane/.local/share/virtualenvs/blog-kKpxKzEP/lib', '/usr/local/lib', '/usr/lib']
  NOT AVAILABLE

blis_info:
  libraries blis not found in ['/Users/shane/.local/share/virtualenvs/blog-kKpxKzEP/lib', '/usr/local/lib', '/usr/lib']
  NOT AVAILABLE

openblas_info:
  libraries openblas not found in ['/Users/shane/.local/share/virtualenvs/blog-kKpxKzEP/lib', '/usr/local/lib', '/usr/lib']
  NOT AVAILABLE

atlas_3_10_blas_threads_info:
Setting PTATLAS=ATLAS
  libraries tatlas not found in ['/Users/shane/.local/share/virtualenvs/blog-kKpxKzEP/lib', '/usr/local/lib', '/usr/lib']
  NOT AVAILABLE

atlas_3_10_blas_info:
  libraries satlas not found in ['/Users/shane/.local/share/virtualenvs/blog-kKpxKzEP/lib', '/usr/local/lib', '/usr/lib']
  NOT AVAILABLE

atlas_blas_threads_info:
Setting PTATLAS=ATLAS
  libraries ptf77blas,ptcblas,atlas not found in ['/Users/shane/.local/share/virtualenvs/blog-kKpxKzEP/lib', '/usr/local/lib', '/usr/lib']
  NOT AVAILABLE

atlas_blas_info:
  libraries f77blas,cblas,atlas not found in ['/Users/shane/.local/share/virtualenvs/blog-kKpxKzEP/lib', '/usr/local/lib', '/usr/lib']
  NOT AVAILABLE

accelerate_info:
  libraries accelerate not found in ['/Users/shane/.local/share/virtualenvs/blog-kKpxKzEP/lib', '/usr/local/lib', '/usr/lib']
Library accelerate was not found. Ignoring
  libraries veclib not found in ['/Users/shane/.local/share/virtualenvs/blog-kKpxKzEP/lib', '/usr/local/lib', '/usr/lib']
Library veclib was not found. Ignoring
  FOUND:
    extra_compile_args = ['-msse3', '-I/System/Library/Frameworks/vecLib.framework/Headers']
    extra_link_args = ['-Wl,-framework', '-Wl,Accelerate']
    define_macros = [('NO_ATLAS_INFO', 3), ('HAVE_CBLAS', None)]

  FOUND:
    extra_compile_args = ['-msse3', '-I/System/Library/Frameworks/vecLib.framework/Headers']
    extra_link_args = ['-Wl,-framework', '-Wl,Accelerate']
    define_macros = [('NO_ATLAS_INFO', 3), ('HAVE_CBLAS', None)]

non-existing path in 'numpy/distutils': 'site.cfg'
lapack_opt_info:
lapack_mkl_info:
  libraries mkl_rt not found in ['/Users/shane/.local/share/virtualenvs/blog-kKpxKzEP/lib', '/usr/local/lib', '/usr/lib']
  NOT AVAILABLE

openblas_lapack_info:
  libraries openblas not found in ['/Users/shane/.local/share/virtualenvs/blog-kKpxKzEP/lib', '/usr/local/lib', '/usr/lib']
  NOT AVAILABLE

openblas_clapack_info:
  libraries openblas,lapack not found in ['/Users/shane/.local/share/virtualenvs/blog-kKpxKzEP/lib', '/usr/local/lib', '/usr/lib']
  NOT AVAILABLE

flame_info:
  libraries flame not found in ['/Users/shane/.local/share/virtualenvs/blog-kKpxKzEP/lib', '/usr/local/lib', '/usr/lib']
  NOT AVAILABLE

atlas_3_10_threads_info:
Setting PTATLAS=ATLAS
  libraries lapack_atlas not found in /Users/shane/.local/share/virtualenvs/blog-kKpxKzEP/lib
  libraries tatlas,tatlas not found in /Users/shane/.local/share/virtualenvs/blog-kKpxKzEP/lib
  libraries lapack_atlas not found in /usr/local/lib
  libraries tatlas,tatlas not found in /usr/local/lib
  libraries lapack_atlas not found in /usr/lib
  libraries tatlas,tatlas not found in /usr/lib
<class 'numpy.distutils.system_info.atlas_3_10_threads_info'>
  NOT AVAILABLE

atlas_3_10_info:
  libraries lapack_atlas not found in /Users/shane/.local/share/virtualenvs/blog-kKpxKzEP/lib
  libraries satlas,satlas not found in /Users/shane/.local/share/virtualenvs/blog-kKpxKzEP/lib
  libraries lapack_atlas not found in /usr/local/lib
  libraries satlas,satlas not found in /usr/local/lib
  libraries lapack_atlas not found in /usr/lib
  libraries satlas,satlas not found in /usr/lib
<class 'numpy.distutils.system_info.atlas_3_10_info'>
  NOT AVAILABLE

atlas_threads_info:
Setting PTATLAS=ATLAS
  libraries lapack_atlas not found in /Users/shane/.local/share/virtualenvs/blog-kKpxKzEP/lib
  libraries ptf77blas,ptcblas,atlas not found in /Users/shane/.local/share/virtualenvs/blog-kKpxKzEP/lib
  libraries lapack_atlas not found in /usr/local/lib
  libraries ptf77blas,ptcblas,atlas not found in /usr/local/lib
  libraries lapack_atlas not found in /usr/lib
  libraries ptf77blas,ptcblas,atlas not found in /usr/lib
<class 'numpy.distutils.system_info.atlas_threads_info'>
  NOT AVAILABLE

atlas_info:
  libraries lapack_atlas not found in /Users/shane/.local/share/virtualenvs/blog-kKpxKzEP/lib
  libraries f77blas,cblas,atlas not found in /Users/shane/.local/share/virtualenvs/blog-kKpxKzEP/lib
  libraries lapack_atlas not found in /usr/local/lib
  libraries f77blas,cblas,atlas not found in /usr/local/lib
  libraries lapack_atlas not found in /usr/lib
  libraries f77blas,cblas,atlas not found in /usr/lib
<class 'numpy.distutils.system_info.atlas_info'>
  NOT AVAILABLE

  FOUND:
    extra_compile_args = ['-msse3', '-I/System/Library/Frameworks/vecLib.framework/Headers']
    extra_link_args = ['-Wl,-framework', '-Wl,Accelerate']
    define_macros = [('NO_ATLAS_INFO', 3), ('HAVE_CBLAS', None)]

/usr/local/Cellar/python@3.9/3.9.1/Frameworks/Python.framework/Versions/3.9/lib/python3.9/distutils/dist.py:274: UserWarning: Unknown distribution option: 'define_macros'
  warnings.warn(msg)
running dist_info
running build_src
build_src
building py_modules sources
creating build
creating build/src.macosx-11-x86_64-3.9
creating build/src.macosx-11-x86_64-3.9/numpy
creating build/src.macosx-11-x86_64-3.9/numpy/distutils
building library "npymath" sources
Traceback (most recent call last):
  File "/usr/local/Cellar/pipenv/2020.11.15/libexec/lib/python3.9/site-packages/pipenv/patched/notpip/_vendor/pep517/_in_process.py", line 257, in <module>
    main()
  File "/usr/local/Cellar/pipenv/2020.11.15/libexec/lib/python3.9/site-packages/pipenv/patched/notpip/_vendor/pep517/_in_process.py", line 240, in main
    json_out['return_val'] = hook(**hook_input['kwargs'])
  File "/usr/local/Cellar/pipenv/2020.11.15/libexec/lib/python3.9/site-packages/pipenv/patched/notpip/_vendor/pep517/_in_process.py", line 110, in prepare_metadata_for_build_wheel
    return hook(metadata_directory, config_settings)
  File "/private/var/folders/yz/l6qh44196z70lty4rs6dm3nc0000gn/T/pip-build-env-5hhkc_mx/overlay/lib/python3.9/site-packages/setuptools/build_meta.py", line 157, in prepare_metadata_for_build_wheel
    self.run_setup()
  File "/private/var/folders/yz/l6qh44196z70lty4rs6dm3nc0000gn/T/pip-build-env-5hhkc_mx/overlay/lib/python3.9/site-packages/setuptools/build_meta.py", line 248, in run_setup
    super(_BuildMetaLegacyBackend,
  File "/private/var/folders/yz/l6qh44196z70lty4rs6dm3nc0000gn/T/pip-build-env-5hhkc_mx/overlay/lib/python3.9/site-packages/setuptools/build_meta.py", line 142, in run_setup
    exec(compile(code, __file__, 'exec'), locals())
  File "setup.py", line 508, in <module>
    setup_package()
  File "setup.py", line 500, in setup_package
    setup(**metadata)
  File "/private/var/folders/yz/l6qh44196z70lty4rs6dm3nc0000gn/T/pip-resolver-id_2dgms/numpy/numpy/distutils/core.py", line 169, in setup
    return old_setup(**new_attr)
  File "/private/var/folders/yz/l6qh44196z70lty4rs6dm3nc0000gn/T/pip-build-env-5hhkc_mx/overlay/lib/python3.9/site-packages/setuptools/__init__.py", line 165, in setup
    return distutils.core.setup(**attrs)
  File "/usr/local/Cellar/python@3.9/3.9.1/Frameworks/Python.framework/Versions/3.9/lib/python3.9/distutils/core.py", line 148, in setup
    dist.run_commands()
  File "/usr/local/Cellar/python@3.9/3.9.1/Frameworks/Python.framework/Versions/3.9/lib/python3.9/distutils/dist.py", line 966, in run_commands
    self.run_command(cmd)
  File "/usr/local/Cellar/python@3.9/3.9.1/Frameworks/Python.framework/Versions/3.9/lib/python3.9/distutils/dist.py", line 985, in run_command
    cmd_obj.run()
  File "/private/var/folders/yz/l6qh44196z70lty4rs6dm3nc0000gn/T/pip-build-env-5hhkc_mx/overlay/lib/python3.9/site-packages/setuptools/command/dist_info.py", line 31, in run
    egg_info.run()
  File "/private/var/folders/yz/l6qh44196z70lty4rs6dm3nc0000gn/T/pip-resolver-id_2dgms/numpy/numpy/distutils/command/egg_info.py", line 24, in run
    self.run_command("build_src")
  File "/usr/local/Cellar/python@3.9/3.9.1/Frameworks/Python.framework/Versions/3.9/lib/python3.9/distutils/cmd.py", line 313, in run_command
    self.distribution.run_command(command)
  File "/usr/local/Cellar/python@3.9/3.9.1/Frameworks/Python.framework/Versions/3.9/lib/python3.9/distutils/dist.py", line 985, in run_command
    cmd_obj.run()
  File "/private/var/folders/yz/l6qh44196z70lty4rs6dm3nc0000gn/T/pip-resolver-id_2dgms/numpy/numpy/distutils/command/build_src.py", line 144, in run
    self.build_sources()
  File "/private/var/folders/yz/l6qh44196z70lty4rs6dm3nc0000gn/T/pip-resolver-id_2dgms/numpy/numpy/distutils/command/build_src.py", line 155, in build_sources
    self.build_library_sources(*libname_info)
  File "/private/var/folders/yz/l6qh44196z70lty4rs6dm3nc0000gn/T/pip-resolver-id_2dgms/numpy/numpy/distutils/command/build_src.py", line 288, in build_library_sources
    sources = self.generate_sources(sources, (lib_name, build_info))
  File "/private/var/folders/yz/l6qh44196z70lty4rs6dm3nc0000gn/T/pip-resolver-id_2dgms/numpy/numpy/distutils/command/build_src.py", line 378, in generate_sources
    source = func(extension, build_dir)
  File "numpy/core/setup.py", line 658, in get_mathlib_info
    st = config_cmd.try_link('int main(void) { return 0;}')
  File "/usr/local/Cellar/python@3.9/3.9.1/Frameworks/Python.framework/Versions/3.9/lib/python3.9/distutils/command/config.py", line 241, in try_link
    self._check_compiler()
  File "/private/var/folders/yz/l6qh44196z70lty4rs6dm3nc0000gn/T/pip-resolver-id_2dgms/numpy/numpy/distutils/command/config.py", line 80, in _check_compiler
    self.fcompiler = new_fcompiler(compiler=self.fcompiler,
  File "/private/var/folders/yz/l6qh44196z70lty4rs6dm3nc0000gn/T/pip-resolver-id_2dgms/numpy/numpy/distutils/fcompiler/__init__.py", line 880, in new_fcompiler
    compiler = get_default_fcompiler(plat, requiref90=requiref90,
  File "/private/var/folders/yz/l6qh44196z70lty4rs6dm3nc0000gn/T/pip-resolver-id_2dgms/numpy/numpy/distutils/fcompiler/__init__.py", line 851, in get_default_fcompiler
    compiler_type =  _find_existing_fcompiler(matching_compiler_types,
  File "/private/var/folders/yz/l6qh44196z70lty4rs6dm3nc0000gn/T/pip-resolver-id_2dgms/numpy/numpy/distutils/fcompiler/__init__.py", line 802, in _find_existing_fcompiler
    c.customize(dist)
  File "/private/var/folders/yz/l6qh44196z70lty4rs6dm3nc0000gn/T/pip-resolver-id_2dgms/numpy/numpy/distutils/fcompiler/__init__.py", line 526, in customize
    linker_so_flags = self.flag_vars.linker_so
  File "/private/var/folders/yz/l6qh44196z70lty4rs6dm3nc0000gn/T/pip-resolver-id_2dgms/numpy/numpy/distutils/fcompiler/environment.py", line 37, in __getattr__
    return self._get_var(name, conf_desc)
  File "/private/var/folders/yz/l6qh44196z70lty4rs6dm3nc0000gn/T/pip-resolver-id_2dgms/numpy/numpy/distutils/fcompiler/environment.py", line 53, in _get_var
    var = self._hook_handler(name, hook)
  File "/private/var/folders/yz/l6qh44196z70lty4rs6dm3nc0000gn/T/pip-resolver-id_2dgms/numpy/numpy/distutils/fcompiler/__init__.py", line 705, in _environment_hook
    return hook()
  File "/private/var/folders/yz/l6qh44196z70lty4rs6dm3nc0000gn/T/pip-resolver-id_2dgms/numpy/numpy/distutils/fcompiler/gnu.py", line 346, in get_flags_linker_so
    flags = GnuFCompiler.get_flags_linker_so(self)
  File "/private/var/folders/yz/l6qh44196z70lty4rs6dm3nc0000gn/T/pip-resolver-id_2dgms/numpy/numpy/distutils/fcompiler/gnu.py", line 136, in get_flags_linker_so
    os.environ['MACOSX_DEPLOYMENT_TARGET'] = target
  File "/usr/local/Cellar/python@3.9/3.9.1/Frameworks/Python.framework/Versions/3.9/lib/python3.9/os.py", line 684, in __setitem__
    value = self.encodevalue(value)
  File "/usr/local/Cellar/python@3.9/3.9.1/Frameworks/Python.framework/Versions/3.9/lib/python3.9/os.py", line 756, in encode
    raise TypeError("str expected, not %s" % type(value).__name__)
TypeError: str expected, not int
----------------------------------------
Traceback (most recent call last):
  File "/usr/local/Cellar/pipenv/2020.11.15/libexec/lib/python3.9/site-packages/pipenv/resolver.py", line 764, in <module>
    main()
  File "/usr/local/Cellar/pipenv/2020.11.15/libexec/lib/python3.9/site-packages/pipenv/resolver.py", line 758, in main
    _main(parsed.pre, parsed.clear, parsed.verbose, parsed.system, parsed.write,
  File "/usr/local/Cellar/pipenv/2020.11.15/libexec/lib/python3.9/site-packages/pipenv/resolver.py", line 741, in _main
    resolve_packages(pre, clear, verbose, system, write, requirements_dir, packages, dev)
  File "/usr/local/Cellar/pipenv/2020.11.15/libexec/lib/python3.9/site-packages/pipenv/resolver.py", line 702, in resolve_packages
    results, resolver = resolve(
  File "/usr/local/Cellar/pipenv/2020.11.15/libexec/lib/python3.9/site-packages/pipenv/resolver.py", line 684, in resolve
    return resolve_deps(
  File "/usr/local/Cellar/pipenv/2020.11.15/libexec/lib/python3.9/site-packages/pipenv/utils.py", line 1395, in resolve_deps
    results, hashes, markers_lookup, resolver, skipped = actually_resolve_deps(
  File "/usr/local/Cellar/pipenv/2020.11.15/libexec/lib/python3.9/site-packages/pipenv/utils.py", line 1108, in actually_resolve_deps
    resolver.resolve()
  File "/usr/local/Cellar/pipenv/2020.11.15/libexec/lib/python3.9/site-packages/pipenv/utils.py", line 823, in resolve
    results = self.resolver.resolve(max_rounds=environments.PIPENV_MAX_ROUNDS)
  File "/usr/local/Cellar/pipenv/2020.11.15/libexec/lib/python3.9/site-packages/pipenv/patched/piptools/resolver.py", line 180, in resolve
    has_changed, best_matches = self._resolve_one_round()
  File "/usr/local/Cellar/pipenv/2020.11.15/libexec/lib/python3.9/site-packages/pipenv/patched/piptools/resolver.py", line 268, in _resolve_one_round
    their_constraints.extend(self._iter_dependencies(best_match))
  File "/usr/local/Cellar/pipenv/2020.11.15/libexec/lib/python3.9/site-packages/pipenv/patched/piptools/resolver.py", line 383, in _iter_dependencies
    dependencies = self.repository.get_dependencies(ireq)
  File "/usr/local/Cellar/pipenv/2020.11.15/libexec/lib/python3.9/site-packages/pipenv/patched/piptools/repositories/pypi.py", line 229, in get_dependencies
    legacy_results = self.get_legacy_dependencies(ireq)
  File "/usr/local/Cellar/pipenv/2020.11.15/libexec/lib/python3.9/site-packages/pipenv/patched/piptools/repositories/pypi.py", line 350, in get_legacy_dependencies
    results, ireq = self.resolve_reqs(
  File "/usr/local/Cellar/pipenv/2020.11.15/libexec/lib/python3.9/site-packages/pipenv/patched/piptools/repositories/pypi.py", line 306, in resolve_reqs
    results = resolver._resolve_one(reqset, ireq)
  File "/usr/local/Cellar/pipenv/2020.11.15/libexec/lib/python3.9/site-packages/pipenv/patched/notpip/_internal/legacy_resolve.py", line 339, in _resolve_one
    abstract_dist = self._get_abstract_dist_for(req_to_install)
  File "/usr/local/Cellar/pipenv/2020.11.15/libexec/lib/python3.9/site-packages/pipenv/patched/notpip/_internal/legacy_resolve.py", line 287, in _get_abstract_dist_for
    abstract_dist = self.preparer.prepare_linked_requirement(req)
  File "/usr/local/Cellar/pipenv/2020.11.15/libexec/lib/python3.9/site-packages/pipenv/patched/notpip/_internal/operations/prepare.py", line 508, in prepare_linked_requirement
    abstract_dist = _get_prepared_distribution(
  File "/usr/local/Cellar/pipenv/2020.11.15/libexec/lib/python3.9/site-packages/pipenv/patched/notpip/_internal/operations/prepare.py", line 95, in _get_prepared_distribution
    abstract_dist.prepare_distribution_metadata(finder, build_isolation)
  File "/usr/local/Cellar/pipenv/2020.11.15/libexec/lib/python3.9/site-packages/pipenv/patched/notpip/_internal/distributions/sdist.py", line 40, in prepare_distribution_metadata
    self.req.prepare_metadata()
  File "/usr/local/Cellar/pipenv/2020.11.15/libexec/lib/python3.9/site-packages/pipenv/patched/notpip/_internal/req/req_install.py", line 564, in prepare_metadata
    self.metadata_directory = self._generate_metadata()
  File "/usr/local/Cellar/pipenv/2020.11.15/libexec/lib/python3.9/site-packages/pipenv/patched/notpip/_internal/req/req_install.py", line 549, in _generate_metadata
    return generate_metadata(
  File "/usr/local/Cellar/pipenv/2020.11.15/libexec/lib/python3.9/site-packages/pipenv/patched/notpip/_internal/operations/build/metadata.py", line 36, in generate_metadata
    distinfo_dir = backend.prepare_metadata_for_build_wheel(
  File "/usr/local/Cellar/pipenv/2020.11.15/libexec/lib/python3.9/site-packages/pipenv/patched/notpip/_vendor/pep517/wrappers.py", line 167, in prepare_metadata_for_build_wheel
    return self._call_hook('prepare_metadata_for_build_wheel', {
  File "/usr/local/Cellar/pipenv/2020.11.15/libexec/lib/python3.9/site-packages/pipenv/patched/notpip/_vendor/pep517/wrappers.py", line 245, in _call_hook
    self._subprocess_runner(
  File "/usr/local/Cellar/pipenv/2020.11.15/libexec/lib/python3.9/site-packages/pipenv/patched/notpip/_internal/utils/subprocess.py", line 271, in runner
    call_subprocess(
  File "/usr/local/Cellar/pipenv/2020.11.15/libexec/lib/python3.9/site-packages/pipenv/patched/notpip/_internal/utils/subprocess.py", line 242, in call_subprocess
    raise InstallationError(exc_msg)
pipenv.patched.notpip._internal.exceptions.InstallationError: Command errored out with exit status 1: /Users/shane/.local/share/virtualenvs/blog-kKpxKzEP/bin/python /usr/local/Cellar/pipenv/2020.11.15/libexec/lib/python3.9/site-packages/pipenv/patched/notpip/_vendor/pep517/_in_process.py prepare_metadata_for_build_wheel /var/folders/yz/l6qh44196z70lty4rs6dm3nc0000gn/T/tmpk03mt0_f Check the logs for full command output.

[radekerben]

Hi, this helped me: export SYSTEM_VERSION_COMPAT=1

Source: https://stackoverflow.com/questions/63972113/big-sur-clang-invalid-version-error-due-to-macosx-deployment-target

[henryiii]

A lot of work has gone into making macOS Big Sur work, but it requires the latest dependencies. Pipenv was released without the “bump all dependencies” step described in its docs, so sadly, it still doesn’t understand that “11.0” is a valid macOS version. If you set export SYSTEM_VERSION_COMPAT=1, then macOS will report itself as “10.16” instead, which temporarily fixes the problem (only on Intel machines, I believe).