fails to build on Apple M due to 'cmath' file not found

[quarterturn]

      clang++ -Wno-unused-result -Wsign-compare -Wunreachable-code -DNDEBUG -fwrapv -O2 -Wall -fPIC -O2 -isystem /Users/derp/miniconda3/envs/xtts2/include -arch arm64 -fPIC -O2 -isystem /Users/derp/miniconda3/envs/xtts2/include -arch arm64 -Icrfsuite/include/ -Icrfsuite/lib/cqdb/include -Iliblbfgs/include -Ipycrfsuite -I/Users/derp/miniconda3/envs/xtts2/include/python3.10 -c crfsuite/swig/crfsuite.cpp -o build/temp.macosx-11.1-arm64-cpython-310/crfsuite/swig/crfsuite.o
      In file included from crfsuite/swig/crfsuite.cpp:1:
      crfsuite/include/crfsuite.hpp:34:10: fatal error: 'cmath' file not found
         34 | #include <cmath>
            |          ^~~~~~~
      1 error generated.
      error: command '/usr/bin/clang++' failed with exit code 1
      [end of output]
  
  note: This error originates from a subprocess, and is likely not a problem with pip.
  ERROR: Failed building wheel for python-crfsuite
  Running setup.py clean for python-crfsuite
Failed to build spacy python-crfsuite
ERROR: ERROR: Failed to build installable wheels for some pyproject.toml based projects (spacy, python-crfsuite)

MacOS 14.6.1 (23G93)
M2 CPU
miniconda env using python=3.10

git show
commit db1ade0e6eb2edfcd32499ebcd4b7ecdaf9de309 (HEAD -> main, origin/main, origin/HEAD)
Merge: 13620d9 7f53cc5
Author: Shlomo Kashani <91342039+BoltzmannEntropy@users.noreply.github.com>
Date:   Thu Jan 25 18:05:06 2024 +0200

    Merge pull request #18 from Anmol2059/main
    
    Update requirements.txt