Numpy 2.3.2 fails to install - error: no template named 'unordered_map' in namespace 'std'; did you mean 'unordered_set'?

[tobbi]

Output of brew config

% brew config
HOMEBREW_VERSION: 4.6.8-8-gab980dc
ORIGIN: https://github.com/Homebrew/brew
HEAD: ab980dc3b7e3f17cae49466a1c110b6ac3abeb83
Last commit: 3 hours ago
Branch: main
Core tap HEAD: aac0e9e38482a7c93bfbe25b3d52027c24339bb3
Core tap last commit: 5 hours ago
Core tap JSON: 02 Sep 19:23 UTC
Core cask tap HEAD: 7a4105934e8fe1dacb4fc33fae4b789b9adfb7d7
Core cask tap last commit: 5 hours ago
Core cask tap JSON: 02 Sep 19:23 UTC
HOMEBREW_PREFIX: /usr/local
HOMEBREW_CASK_OPTS: []
HOMEBREW_DISPLAY: /private/tmp/com.apple.launchd.RW8BSPOSbM/org.xquartz:0
HOMEBREW_FORBID_PACKAGES_FROM_PATHS: set
HOMEBREW_MAKE_JOBS: 8
HOMEBREW_SORBET_RUNTIME: set
Homebrew Ruby: 3.4.5 => /usr/local/Homebrew/Library/Homebrew/vendor/portable-ruby/3.4.5/bin/ruby
CPU: octa-core 64-bit ivybridge
Clang: 14.0.0 build 1400
Git: 2.37.1 => /Volumes/Development/Xcode.app/Contents/Developer/usr/bin/git
Curl: 8.7.1 => /usr/bin/curl
macOS: 12.7.6-x86_64
CLT: 14.2.0.0.1.1668646533
Xcode: 14.2 => /Volumes/Development/Xcode.app/Contents/Developer

Output of brew doctor

% brew doctor
Please note that these warnings are just used to help the Homebrew maintainers
with debugging if you file an issue. If everything you use Homebrew for is
working fine: please don't worry or file an issue; just ignore this. Thanks!

Warning: Some installed casks are deprecated or disabled.
You should find replacements for the following casks:
  gstreamer-runtime
  wine@devel

Warning: Some installed kegs have no formulae!
This means they were either deleted or installed manually.
You should find replacements for the following formulae:
  python-flit-core

Warning: Some installed formulae are deprecated or disabled.
You should find replacements for the following formulae:
  icu4c@75
  icu4c@76
  node@18
  openssl@1.1
  protobuf@21
  tinyxml

Warning: You have booted macOS using OpenCore Legacy Patcher.
We do not provide support for this configuration.

This is a Tier 2 configuration:
  https://docs.brew.sh/Support-Tiers#tier-2
You can report Tier 2 unrelated issues to Homebrew/* repositories!
Read the above document instead before opening any issues or PRs.


Warning: Unbrewed header files were found in /usr/local/include.
If you didn't put them there on purpose they could cause problems when
building Homebrew formulae and may need to be deleted.

Unexpected header files:
  /usr/local/include/node/*
  /usr/local/include/qemu-plugin.h

Warning: You have unlinked kegs in your Cellar.
Leaving kegs unlinked can lead to build-trouble and cause formulae that depend on
those kegs to fail to run properly once built. Run `brew link` on these:
  qt@4
  node

Warning: You are using macOS 12.
We (and Apple) do not provide support for this old version.

This is a Tier 3 configuration:
  https://docs.brew.sh/Support-Tiers#tier-3
You can report Tier 3 unrelated issues to Homebrew/* repositories!
Read the above document instead before opening any issues or PRs.

Description of issue

I noticed that numpy can't be upgraded anymore. I'm not sure if this is an issue with brew or numpy, as apparently a C++ include can't be found successfully.

This is the last few lines of the build log:

  [266/521] Compiling C++ object numpy/_core/libunique_hash.a.p/src_multiarray_unique.cpp.o
  FAILED: [code=1] numpy/_core/libunique_hash.a.p/src_multiarray_unique.cpp.o
  clang++ -Inumpy/_core/libunique_hash.a.p -Inumpy/_core -I../numpy/_core -Inumpy/_core/include -I../numpy/_core/include -I../numpy/_core/src/common -I/usr/local/opt/python@3.12/Frameworks/Python.framework/Versions/3.12/include/python3.12 -I/private/tmp/numpy-20250902-82687-g9svcg/numpy-2.3.2/.mesonpy-1bzy3z7h/meson_cpu -fdiagnostics-color=always -DNDEBUG -Wall -Winvalid-pch -std=c++17 -O3 -ftrapping-math -DNPY_HAVE_CLANG_FPSTRICT -msse -msse2 -msse3 -DNPY_HAVE_SSE2 -DNPY_HAVE_SSE -DNPY_HAVE_SSE3 -DNPY_INTERNAL_BUILD -DHAVE_NPY_CONFIG_H -D_FILE_OFFSET_BITS=64 -D_LARGEFILE_SOURCE=1 -D_LARGEFILE64_SOURCE=1 -fexceptions -fno-rtti -MD -MQ numpy/_core/libunique_hash.a.p/src_multiarray_unique.cpp.o -MF numpy/_core/libunique_hash.a.p/src_multiarray_unique.cpp.o.d -o numpy/_core/libunique_hash.a.p/src_multiarray_unique.cpp.o -c ../numpy/_core/src/multiarray/unique.cpp
  ../numpy/_core/src/multiarray/unique.cpp:123:6: error: no template named 'unordered_map' in namespace 'std'; did you mean 'unordered_set'?
  std::unordered_map<int, function_type> unique_funcs = {
  ~~~~~^~~~~~~~~~~~~
       unordered_set
  /Library/Developer/CommandLineTools/SDKs/MacOSX12.sdk/usr/include/c++/v1/unordered_set:411:28: note: 'unordered_set' declared here
  class _LIBCPP_TEMPLATE_VIS unordered_set
                             ^
  ../numpy/_core/src/multiarray/unique.cpp:123:40: error: no matching constructor for initialization of 'std::unordered_set<int, function_type>' (aka 'unordered_set<int, function<_object *(tagPyArrayObject *)>>')
  std::unordered_map<int, function_type> unique_funcs = {
                                         ^              ~
  /Library/Developer/CommandLineTools/SDKs/MacOSX12.sdk/usr/include/c++/v1/unordered_set:478:9: note: candidate constructor template not viable: requires 6 arguments, but 19 were provided
          unordered_set(_InputIterator __first, _InputIterator __last,
          ^
  /Library/Developer/CommandLineTools/SDKs/MacOSX12.sdk/usr/include/c++/v1/unordered_set:474:9: note: candidate constructor template not viable: requires at most 5 arguments, but 19 were provided
          unordered_set(_InputIterator __first, _InputIterator __last,
          ^
  /Library/Developer/CommandLineTools/SDKs/MacOSX12.sdk/usr/include/c++/v1/unordered_set:488:9: note: candidate constructor template not viable: requires 5 arguments, but 19 were provided
          unordered_set(_InputIterator __first, _InputIterator __last,
          ^
  /Library/Developer/CommandLineTools/SDKs/MacOSX12.sdk/usr/include/c++/v1/unordered_set:505:5: note: candidate constructor not viable: requires 5 arguments, but 19 were provided
      unordered_set(initializer_list<value_type> __il, size_type __n,
      ^
  /Library/Developer/CommandLineTools/SDKs/MacOSX12.sdk/usr/include/c++/v1/unordered_set:469:5: note: candidate constructor not viable: requires 4 arguments, but 19 were provided
      unordered_set(size_type __n, const hasher& __hf, const key_equal& __eql,
      ^
  /Library/Developer/CommandLineTools/SDKs/MacOSX12.sdk/usr/include/c++/v1/unordered_set:484:9: note: candidate constructor template not viable: requires 4 arguments, but 19 were provided
          unordered_set(_InputIterator __first, _InputIterator __last,
          ^
  /Library/Developer/CommandLineTools/SDKs/MacOSX12.sdk/usr/include/c++/v1/unordered_set:502:5: note: candidate constructor not viable: requires at most 4 arguments, but 19 were provided
      unordered_set(initializer_list<value_type> __il, size_type __n,
      ^
  /Library/Developer/CommandLineTools/SDKs/MacOSX12.sdk/usr/include/c++/v1/unordered_set:514:5: note: candidate constructor not viable: requires 4 arguments, but 19 were provided
      unordered_set(initializer_list<value_type> __il, size_type __n,
      ^
  /Library/Developer/CommandLineTools/SDKs/MacOSX12.sdk/usr/include/c++/v1/unordered_set:459:14: note: candidate constructor not viable: requires at most 3 arguments, but 19 were provided
      explicit unordered_set(size_type __n, const hasher& __hf = hasher(),
               ^
  /Library/Developer/CommandLineTools/SDKs/MacOSX12.sdk/usr/include/c++/v1/unordered_set:466:5: note: candidate constructor not viable: requires 3 arguments, but 19 were provided
      unordered_set(size_type __n, const hasher& __hf, const allocator_type& __a)
      ^
  /Library/Developer/CommandLineTools/SDKs/MacOSX12.sdk/usr/include/c++/v1/unordered_set:510:5: note: candidate constructor not viable: requires 3 arguments, but 19 were provided
      unordered_set(initializer_list<value_type> __il, size_type __n,
      ^
  /Library/Developer/CommandLineTools/SDKs/MacOSX12.sdk/usr/include/c++/v1/unordered_set:463:5: note: candidate constructor not viable: requires 2 arguments, but 19 were provided
      unordered_set(size_type __n, const allocator_type& __a)
      ^
  /Library/Developer/CommandLineTools/SDKs/MacOSX12.sdk/usr/include/c++/v1/unordered_set:472:9: note: candidate constructor template not viable: requires 2 arguments, but 19 were provided
          unordered_set(_InputIterator __first, _InputIterator __last);
          ^
  /Library/Developer/CommandLineTools/SDKs/MacOSX12.sdk/usr/include/c++/v1/unordered_set:495:5: note: candidate constructor not viable: requires 2 arguments, but 19 were provided
      unordered_set(const unordered_set& __u, const allocator_type& __a);
      ^
  /Library/Developer/CommandLineTools/SDKs/MacOSX12.sdk/usr/include/c++/v1/unordered_set:500:5: note: candidate constructor not viable: requires 2 arguments, but 19 were provided
      unordered_set(unordered_set&& __u, const allocator_type& __a);
      ^
  /Library/Developer/CommandLineTools/SDKs/MacOSX12.sdk/usr/include/c++/v1/unordered_set:493:14: note: candidate constructor not viable: requires single argument '__a', but 19 arguments were provided
      explicit unordered_set(const allocator_type& __a);
               ^
  /Library/Developer/CommandLineTools/SDKs/MacOSX12.sdk/usr/include/c++/v1/unordered_set:494:5: note: candidate constructor not viable: requires single argument '__u', but 19 arguments were provided
      unordered_set(const unordered_set& __u);
      ^
  /Library/Developer/CommandLineTools/SDKs/MacOSX12.sdk/usr/include/c++/v1/unordered_set:498:5: note: candidate constructor not viable: requires single argument '__u', but 19 arguments were provided
      unordered_set(unordered_set&& __u)
      ^
  /Library/Developer/CommandLineTools/SDKs/MacOSX12.sdk/usr/include/c++/v1/unordered_set:501:5: note: candidate constructor not viable: requires single argument '__il', but 19 arguments were provided
      unordered_set(initializer_list<value_type> __il);
      ^
  /Library/Developer/CommandLineTools/SDKs/MacOSX12.sdk/usr/include/c++/v1/unordered_set:452:5: note: candidate constructor not viable: requires 0 arguments, but 19 were provided
      unordered_set()
      ^
  ../numpy/_core/src/multiarray/unique.cpp:173:28: error: type 'std::unordered_set<int, function_type>' (aka 'unordered_set<int, function<_object *(tagPyArrayObject *)>>') does not provide a subscript operator
          return unique_funcs[type](arr);
                 ~~~~~~~~~~~~^~~~~
  In file included from ../numpy/_core/src/multiarray/unique.cpp:6:
  In file included from /Library/Developer/CommandLineTools/SDKs/MacOSX12.sdk/usr/include/c++/v1/unordered_set:392:
  /Library/Developer/CommandLineTools/SDKs/MacOSX12.sdk/usr/include/c++/v1/__hash_table:2389:21: error: no matching function for call to object of type 'std::__hash_table<int, std::function<_object *(tagPyArrayObject *)>, std::equal_to<int>, std::allocator<int>>::hasher' (aka 'std::function<_object *(tagPyArrayObject *)>')
      size_t __hash = hash_function()(__k);
                      ^~~~~~~~~~~~~~~
  /Library/Developer/CommandLineTools/SDKs/MacOSX12.sdk/usr/include/c++/v1/unordered_set:706:69: note: in instantiation of function template specialization 'std::__hash_table<int, std::function<_object *(tagPyArrayObject *)>, std::equal_to<int>, std::allocator<int>>::find<int>' requested here
      iterator       find(const key_type& __k)       {return __table_.find(__k);}
                                                                      ^
  ../numpy/_core/src/multiarray/unique.cpp:169:26: note: in instantiation of member function 'std::unordered_set<int, std::function<_object *(tagPyArrayObject *)>>::find' requested here
          if (unique_funcs.find(type) == unique_funcs.end()) {
                           ^
  /Library/Developer/CommandLineTools/SDKs/MacOSX12.sdk/usr/include/c++/v1/__functional/function.h:1044:9: note: candidate function not viable: no known conversion from 'const int' to 'tagPyArrayObject *' for 1st argument
      _Rp operator()(_ArgTypes...) const;
          ^
  4 errors generated.
  [267/521] Generating 'numpy/_core/_multiarray_umath.cpython-312-darwin.so.p/einsum_sumprod.c'
  [268/521] Generating 'numpy/_core/_multiarray_umath.cpython-312-darwin.so.p/lowlevel_strided_loops.c'
  [269/521] Compiling C object numpy/_core/libloops_autovec.dispatch.h_baseline.a.p/meson-generated_loops_autovec.dispatch.c.o
  [270/521] Compiling C object numpy/_core/libloops_autovec.dispatch.h_AVX2.a.p/meson-generated_loops_autovec.dispatch.c.o
  [271/521] Compiling C object numpy/_core/lib_simd.dispatch.h_SSE42.a.p/meson-generated__simd.dispatch.c.o
  [272/521] Compiling C object numpy/_core/lib_simd.dispatch.h_baseline.a.p/meson-generated__simd.dispatch.c.o
  [273/521] Compiling C object numpy/_core/lib_simd.dispatch.h_AVX2.a.p/meson-generated__simd.dispatch.c.o
  ninja: build stopped: subcommand failed.
  error: subprocess-exited-with-error

  × Preparing metadata (pyproject.toml) 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.
  full command: /usr/local/opt/python@3.12/bin/python3.12 /usr/local/lib/python3.12/site-packages/pip/_vendor/pyproject_hooks/_in_process/_in_process.py prepare_metadata_for_build_wheel /private/tmp/tmpyvbfg0to
  cwd: /private/tmp/numpy-20250902-82687-g9svcg/numpy-2.3.2
  Preparing metadata (pyproject.toml): finished with status 'error'
error: metadata-generation-failed

× Encountered error while generating package metadata.
╰─> See above for output.

note: This is an issue with the package mentioned above, not pip.
hint: See above for details.

HOMEBREW_VERSION: 4.6.8-4-g75350b4
ORIGIN: https://github.com/Homebrew/brew
HEAD: 75350b48a3c7cd0fcfdb77c5c268bda6225ebcb6
Last commit: 67 minutes ago
Branch: main
Core tap HEAD: aac0e9e38482a7c93bfbe25b3d52027c24339bb3
Core tap last commit: 34 minutes ago
Core tap JSON: 02 Sep 15:19 UTC
Core cask tap HEAD: 7a4105934e8fe1dacb4fc33fae4b789b9adfb7d7
Core cask tap last commit: 87 minutes ago
Core cask tap JSON: 02 Sep 15:04 UTC
HOMEBREW_PREFIX: /usr/local
HOMEBREW_CASK_OPTS: []
HOMEBREW_DISPLAY: /private/tmp/com.apple.launchd.RW8BSPOSbM/org.xquartz:0
HOMEBREW_MAKE_JOBS: 8
HOMEBREW_NO_BOOTSNAP: set
HOMEBREW_SORBET_RUNTIME: set
Homebrew Ruby: 3.4.5 => /usr/local/Homebrew/Library/Homebrew/vendor/portable-ruby/3.4.5/bin/ruby
CPU: octa-core 64-bit ivybridge
Clang: 14.0.0 build 1400
Git: 2.37.1 => /Volumes/Development/Xcode.app/Contents/Developer/usr/bin/git
Curl: 8.7.1 => /usr/bin/curl
macOS: 12.7.6-x86_64
CLT: 14.2.0.0.1.1668646533
Xcode: 14.2 => /Volumes/Development/Xcode.app/Contents/Developer

HOMEBREW_CC: clang
HOMEBREW_CXX: clang++
MAKEFLAGS: -j8
CMAKE_PREFIX_PATH: /usr/local/opt/openblas:/usr/local
CMAKE_INCLUDE_PATH: /Library/Developer/CommandLineTools/SDKs/MacOSX12.sdk/System/Library/Frameworks/OpenGL.framework/Versions/Current/Headers
CMAKE_LIBRARY_PATH: /Library/Developer/CommandLineTools/SDKs/MacOSX12.sdk/System/Library/Frameworks/OpenGL.framework/Versions/Current/Libraries
CMAKE_FRAMEWORK_PATH: /usr/local/opt/python@3.12/Frameworks:/usr/local/opt/python@3.13/Frameworks
PKG_CONFIG_PATH: /usr/local/opt/python@3.12/lib/pkgconfig:/usr/local/opt/python@3.13/lib/pkgconfig:/usr/local/opt/gmp/lib/pkgconfig:/usr/local/opt/isl/lib/pkgconfig:/usr/local/opt/mpfr/lib/pkgconfig:/usr/local/opt/lz4/lib/pkgconfig:/usr/local/opt/xz/lib/pkgconfig:/usr/local/opt/zstd/lib/pkgconfig:/usr/local/opt/openblas/lib/pkgconfig
PKG_CONFIG_LIBDIR: /usr/lib/pkgconfig:/usr/local/Homebrew/Library/Homebrew/os/mac/pkgconfig/12
HOMEBREW_MAKE_JOBS: 8
HOMEBREW_GIT: git
HOMEBREW_SDKROOT: /Library/Developer/CommandLineTools/SDKs/MacOSX12.sdk
ACLOCAL_PATH: /usr/local/share/aclocal
PATH: /usr/local/Homebrew/Library/Homebrew/shims/mac/super:/usr/local/opt/gcc/bin:/usr/local/opt/meson/bin:/usr/local/opt/ninja/bin:/usr/local/opt/python@3.12/bin:/usr/local/opt/python@3.13/bin:/usr/local/opt/lz4/bin:/usr/local/opt/xz/bin:/usr/local/opt/zstd/bin:/usr/local/opt/python@3.13/libexec/bin:/usr/local/opt/python@3.12/libexec/bin:/usr/bin:/bin:/usr/sbin:/sbin
tobiasmarkus@Tobiass-MBP-3 ~ % brew config
HOMEBREW_VERSION: 4.6.8-8-gab980dc
ORIGIN: https://github.com/Homebrew/brew
HEAD: ab980dc3b7e3f17cae49466a1c110b6ac3abeb83
Last commit: 3 hours ago
Branch: main
Core tap HEAD: aac0e9e38482a7c93bfbe25b3d52027c24339bb3
Core tap last commit: 5 hours ago
Core tap JSON: 02 Sep 19:23 UTC
Core cask tap HEAD: 7a4105934e8fe1dacb4fc33fae4b789b9adfb7d7
Core cask tap last commit: 5 hours ago
Core cask tap JSON: 02 Sep 19:23 UTC
HOMEBREW_PREFIX: /usr/local
HOMEBREW_CASK_OPTS: []
HOMEBREW_DISPLAY: /private/tmp/com.apple.launchd.RW8BSPOSbM/org.xquartz:0
HOMEBREW_FORBID_PACKAGES_FROM_PATHS: set
HOMEBREW_MAKE_JOBS: 8
HOMEBREW_SORBET_RUNTIME: set
Homebrew Ruby: 3.4.5 => /usr/local/Homebrew/Library/Homebrew/vendor/portable-ruby/3.4.5/bin/ruby
CPU: octa-core 64-bit ivybridge
Clang: 14.0.0 build 1400
Git: 2.37.1 => /Volumes/Development/Xcode.app/Contents/Developer/usr/bin/git
Curl: 8.7.1 => /usr/bin/curl
macOS: 12.7.6-x86_64
CLT: 14.2.0.0.1.1668646533
Xcode: 14.2 => /Volumes/Development/Xcode.app/Contents/Developer

I don't know if this is a problem with homebrew compiling against the wrong version of gcc or whatever?

[ZhongRuoyu]

This is a problem with NumPy; https://github.com/numpy/numpy/blob/v2.3.2/numpy/_core/src/multiarray/unique.cpp is missing an #include <unordered_map>.

[tobbi]

Thanks, I've submitted numpy/numpy#29662 to fix it.

[ZhongRuoyu]

Note that you can apply the patch to your local formula for your local build to pass. Documentation available at https://docs.brew.sh/Formula-Cookbook#patches.

After applying the patch, make sure you run brew install with HOMEBREW_NO_INSTALL_FROM_API=1.