"lvalue required as increment operand" error when building enable for Python 3.10

[brechtm]

I'm trying to install chaco in a Python 3.10 venv, but enable is failing to build:

      In file included from /apps/hosted/spack/opt/spack/linux-rhel7-haswell/gcc-4.8.5/python-3.10.4-mmazwmt2setv7iasfcutia22qz7xatt6/include/python3.10/Python.h:74:0,
                       from kiva/_cython_speedups.cpp:4:
      kiva/_cython_speedups.cpp: In function ‘void __pyx_tp_dealloc_array(PyObject*)’:
      /apps/hosted/spack/opt/spack/linux-rhel7-haswell/gcc-4.8.5/python-3.10.4-mmazwmt2setv7iasfcutia22qz7xatt6/include/python3.10/object.h:133:58: error: lvalue required as increment operand
       #define Py_REFCNT(ob) _Py_REFCNT(_PyObject_CAST_CONST(ob))
                                                                ^

I'm using a fairly old GCC version (4.8.5). Perhaps that is the cause of the issue?

Full log:

$ pip install chaco

Collecting chaco
  Using cached chaco-5.0.0-cp310-cp310-linux_x86_64.whl
Collecting traitsui
  Using cached traitsui-7.3.1-py3-none-any.whl (1.5 MB)
Collecting pyface>=7.2.0
  Using cached pyface-7.4.1-py3-none-any.whl (1.3 MB)
Collecting numpy
  Using cached numpy-1.23.0-cp310-cp310-manylinux_2_17_x86_64.manylinux2014_x86_64.whl (17.0 MB)
Collecting enable>=5.2.0
  Using cached enable-5.3.0.tar.gz (3.9 MB)
  Installing build dependencies ... done
  Getting requirements to build wheel ... done
  Preparing metadata (pyproject.toml) ... done
Collecting traits>=6.2.0
  Using cached traits-6.3.2-cp310-cp310-manylinux_2_5_x86_64.manylinux1_x86_64.manylinux_2_12_x86_64.manylinux2010_x86_64.whl (5.1 MB)
Collecting fonttools
  Using cached fonttools-4.33.3-py3-none-any.whl (930 kB)
Collecting pillow
  Using cached Pillow-9.1.1-cp310-cp310-manylinux_2_17_x86_64.manylinux2014_x86_64.whl (3.1 MB)
Building wheels for collected packages: enable
  Building wheel for enable (pyproject.toml) ... error
  error: subprocess-exited-with-error

  × Building wheel for enable (pyproject.toml) did not run successfully.
  │ exit code: 1
  ╰─> [270 lines of output]

      SWIG Version 3.0.12

      Compiled with /apps/hosted/spack/lib/spack/env/gcc/g++ [x86_64-pc-linux-gnu]

      Configured options: +pcre

      Please see http://www.swig.org for reporting bugs and further information
      running bdist_wheel
      running build
      running build_ext
      skipping 'kiva/_cython_speedups.cpp' Cython extension (up-to-date)
      skipping 'kiva/_marker_renderer.cpp' Cython extension (up-to-date)
      building 'kiva._cython_speedups' extension
      creating build
      creating build/temp.linux-x86_64-cpython-310
      creating build/temp.linux-x86_64-cpython-310/kiva
      /usr/bin/gcc -pthread -Wno-unused-result -Wsign-compare -DNDEBUG -g -fwrapv -O3 -Wall -fPIC -fPIC -Ikiva -I/tmp/pip-build-env-ninaqy8o/overlay/lib/python3.10/site-packages/numpy/core/include -I/home/brechtm/experiments/pywave3/.venv/include -I/apps/hosted/spack/opt/spack/linux-rhel7-haswell/gcc-4.8.5/python-3.10.4-mmazwmt2setv7iasfcutia22qz7xatt6/include/python3.10 -c kiva/_cython_speedups.cpp -o build/temp.linux-x86_64-cpython-310/kiva/_cython_speedups.o
      In file included from /tmp/pip-build-env-ninaqy8o/overlay/lib/python3.10/site-packages/numpy/core/include/numpy/ndarraytypes.h:1969:0,
                       from /tmp/pip-build-env-ninaqy8o/overlay/lib/python3.10/site-packages/numpy/core/include/numpy/ndarrayobject.h:12,
                       from /tmp/pip-build-env-ninaqy8o/overlay/lib/python3.10/site-packages/numpy/core/include/numpy/arrayobject.h:4,
                       from kiva/_cython_speedups.cpp:612:
      /tmp/pip-build-env-ninaqy8o/overlay/lib/python3.10/site-packages/numpy/core/include/numpy/npy_1_7_deprecated_api.h:17:2: warning: #warning "Using deprecated NumPy API, disable it with " "#define NPY_NO_DEPRECATED_API NPY_1_7_API_VERSION" [-Wcpp]
       #warning "Using deprecated NumPy API, disable it with " \
        ^
      In file included from /apps/hosted/spack/opt/spack/linux-rhel7-haswell/gcc-4.8.5/python-3.10.4-mmazwmt2setv7iasfcutia22qz7xatt6/include/python3.10/Python.h:74:0,
                       from kiva/_cython_speedups.cpp:4:
      kiva/_cython_speedups.cpp: In function ‘void __pyx_tp_dealloc_array(PyObject*)’:
      /apps/hosted/spack/opt/spack/linux-rhel7-haswell/gcc-4.8.5/python-3.10.4-mmazwmt2setv7iasfcutia22qz7xatt6/include/python3.10/object.h:133:58: error: lvalue required as increment operand
       #define Py_REFCNT(ob) _Py_REFCNT(_PyObject_CAST_CONST(ob))
                                                                ^
      kiva/_cython_speedups.cpp:18986:7: note: in expansion of macro ‘Py_REFCNT’
           ++Py_REFCNT(o);
             ^
      /apps/hosted/spack/opt/spack/linux-rhel7-haswell/gcc-4.8.5/python-3.10.4-mmazwmt2setv7iasfcutia22qz7xatt6/include/python3.10/object.h:133:58: error: lvalue required as decrement operand
       #define Py_REFCNT(ob) _Py_REFCNT(_PyObject_CAST_CONST(ob))
                                                                ^
      kiva/_cython_speedups.cpp:18988:7: note: in expansion of macro ‘Py_REFCNT’
           --Py_REFCNT(o);
             ^
      kiva/_cython_speedups.cpp: In function ‘void __pyx_tp_dealloc_memoryview(PyObject*)’:
      /apps/hosted/spack/opt/spack/linux-rhel7-haswell/gcc-4.8.5/python-3.10.4-mmazwmt2setv7iasfcutia22qz7xatt6/include/python3.10/object.h:133:58: error: lvalue required as increment operand
       #define Py_REFCNT(ob) _Py_REFCNT(_PyObject_CAST_CONST(ob))
                                                                ^
      kiva/_cython_speedups.cpp:19297:7: note: in expansion of macro ‘Py_REFCNT’
           ++Py_REFCNT(o);
             ^
      /apps/hosted/spack/opt/spack/linux-rhel7-haswell/gcc-4.8.5/python-3.10.4-mmazwmt2setv7iasfcutia22qz7xatt6/include/python3.10/object.h:133:58: error: lvalue required as decrement operand
       #define Py_REFCNT(ob) _Py_REFCNT(_PyObject_CAST_CONST(ob))
                                                                ^
      kiva/_cython_speedups.cpp:19299:7: note: in expansion of macro ‘Py_REFCNT’
           --Py_REFCNT(o);
             ^
      kiva/_cython_speedups.cpp: In function ‘void __pyx_tp_dealloc__memoryviewslice(PyObject*)’:
      /apps/hosted/spack/opt/spack/linux-rhel7-haswell/gcc-4.8.5/python-3.10.4-mmazwmt2setv7iasfcutia22qz7xatt6/include/python3.10/object.h:133:58: error: lvalue required as increment operand
       #define Py_REFCNT(ob) _Py_REFCNT(_PyObject_CAST_CONST(ob))
                                                                ^
      kiva/_cython_speedups.cpp:19547:7: note: in expansion of macro ‘Py_REFCNT’
           ++Py_REFCNT(o);
             ^
      /apps/hosted/spack/opt/spack/linux-rhel7-haswell/gcc-4.8.5/python-3.10.4-mmazwmt2setv7iasfcutia22qz7xatt6/include/python3.10/object.h:133:58: error: lvalue required as decrement operand
       #define Py_REFCNT(ob) _Py_REFCNT(_PyObject_CAST_CONST(ob))
                                                                ^
      kiva/_cython_speedups.cpp:19549:7: note: in expansion of macro ‘Py_REFCNT’
           --Py_REFCNT(o);
             ^
      In file included from /apps/hosted/spack/opt/spack/linux-rhel7-haswell/gcc-4.8.5/python-3.10.4-mmazwmt2setv7iasfcutia22qz7xatt6/include/python3.10/unicodeobject.h:1046:0,
                       from /apps/hosted/spack/opt/spack/linux-rhel7-haswell/gcc-4.8.5/python-3.10.4-mmazwmt2setv7iasfcutia22qz7xatt6/include/python3.10/Python.h:83,
                       from kiva/_cython_speedups.cpp:4:
      kiva/_cython_speedups.cpp: In function ‘int __Pyx_ParseOptionalKeywords(PyObject*, PyObject***, PyObject*, PyObject**, Py_ssize_t, const char*)’:
      /apps/hosted/spack/opt/spack/linux-rhel7-haswell/gcc-4.8.5/python-3.10.4-mmazwmt2setv7iasfcutia22qz7xatt6/include/python3.10/cpython/unicodeobject.h:451:35: warning: ‘Py_ssize_t _PyUnicode_get_wstr_length(PyObject*)’ is deprecated (declared at /apps/hosted/spack/opt/spack/linux-rhel7-haswell/gcc-4.8.5/python-3.10.4-mmazwmt2setv7iasfcutia22qz7xatt6/include/python3.10/cpython/unicodeobject.h:446) [-Wdeprecated-declarations]
       #define PyUnicode_WSTR_LENGTH(op) _PyUnicode_get_wstr_length((PyObject*)op)
                                         ^
      /apps/hosted/spack/opt/spack/linux-rhel7-haswell/gcc-4.8.5/python-3.10.4-mmazwmt2setv7iasfcutia22qz7xatt6/include/python3.10/cpython/unicodeobject.h:261:7: note: in expansion of macro ‘PyUnicode_WSTR_LENGTH’
             PyUnicode_WSTR_LENGTH(op) :                    \
             ^
      kiva/_cython_speedups.cpp:20962:22: note: in expansion of macro ‘PyUnicode_GET_SIZE’
                           (PyUnicode_GET_SIZE(**name) != PyUnicode_GET_SIZE(key)) ? 1 :
                            ^
      /apps/hosted/spack/opt/spack/linux-rhel7-haswell/gcc-4.8.5/python-3.10.4-mmazwmt2setv7iasfcutia22qz7xatt6/include/python3.10/cpython/unicodeobject.h:451:75: warning: ‘Py_ssize_t _PyUnicode_get_wstr_length(PyObject*)’ is deprecated (declared at /apps/hosted/spack/opt/spack/linux-rhel7-haswell/gcc-4.8.5/python-3.10.4-mmazwmt2setv7iasfcutia22qz7xatt6/include/python3.10/cpython/unicodeobject.h:446) [-Wdeprecated-declarations]
       #define PyUnicode_WSTR_LENGTH(op) _PyUnicode_get_wstr_length((PyObject*)op)
                                                                                 ^
      /apps/hosted/spack/opt/spack/linux-rhel7-haswell/gcc-4.8.5/python-3.10.4-mmazwmt2setv7iasfcutia22qz7xatt6/include/python3.10/cpython/unicodeobject.h:261:7: note: in expansion of macro ‘PyUnicode_WSTR_LENGTH’
             PyUnicode_WSTR_LENGTH(op) :                    \
             ^
      kiva/_cython_speedups.cpp:20962:22: note: in expansion of macro ‘PyUnicode_GET_SIZE’
                           (PyUnicode_GET_SIZE(**name) != PyUnicode_GET_SIZE(key)) ? 1 :
                            ^
      /apps/hosted/spack/opt/spack/linux-rhel7-haswell/gcc-4.8.5/python-3.10.4-mmazwmt2setv7iasfcutia22qz7xatt6/include/python3.10/cpython/unicodeobject.h:262:14: warning: ‘Py_UNICODE* PyUnicode_AsUnicode(PyObject*)’ is deprecated (declared at /apps/hosted/spack/opt/spack/linux-rhel7-haswell/gcc-4.8.5/python-3.10.4-mmazwmt2setv7iasfcutia22qz7xatt6/include/python3.10/cpython/unicodeobject.h:580) [-Wdeprecated-declarations]
             ((void)PyUnicode_AsUnicode(_PyObject_CAST(op)),\
                    ^
      kiva/_cython_speedups.cpp:20962:22: note: in expansion of macro ‘PyUnicode_GET_SIZE’
                           (PyUnicode_GET_SIZE(**name) != PyUnicode_GET_SIZE(key)) ? 1 :
                            ^
      /apps/hosted/spack/opt/spack/linux-rhel7-haswell/gcc-4.8.5/python-3.10.4-mmazwmt2setv7iasfcutia22qz7xatt6/include/python3.10/cpython/unicodeobject.h:262:52: warning: ‘Py_UNICODE* PyUnicode_AsUnicode(PyObject*)’ is deprecated (declared at /apps/hosted/spack/opt/spack/linux-rhel7-haswell/gcc-4.8.5/python-3.10.4-mmazwmt2setv7iasfcutia22qz7xatt6/include/python3.10/cpython/unicodeobject.h:580) [-Wdeprecated-declarations]
             ((void)PyUnicode_AsUnicode(_PyObject_CAST(op)),\
                                                          ^
      kiva/_cython_speedups.cpp:20962:22: note: in expansion of macro ‘PyUnicode_GET_SIZE’
                           (PyUnicode_GET_SIZE(**name) != PyUnicode_GET_SIZE(key)) ? 1 :
                            ^
      /apps/hosted/spack/opt/spack/linux-rhel7-haswell/gcc-4.8.5/python-3.10.4-mmazwmt2setv7iasfcutia22qz7xatt6/include/python3.10/cpython/unicodeobject.h:451:35: warning: ‘Py_ssize_t _PyUnicode_get_wstr_length(PyObject*)’ is deprecated (declared at /apps/hosted/spack/opt/spack/linux-rhel7-haswell/gcc-4.8.5/python-3.10.4-mmazwmt2setv7iasfcutia22qz7xatt6/include/python3.10/cpython/unicodeobject.h:446) [-Wdeprecated-declarations]
       #define PyUnicode_WSTR_LENGTH(op) _PyUnicode_get_wstr_length((PyObject*)op)
                                         ^
      /apps/hosted/spack/opt/spack/linux-rhel7-haswell/gcc-4.8.5/python-3.10.4-mmazwmt2setv7iasfcutia22qz7xatt6/include/python3.10/cpython/unicodeobject.h:264:8: note: in expansion of macro ‘PyUnicode_WSTR_LENGTH’
              PyUnicode_WSTR_LENGTH(op)))
              ^
      kiva/_cython_speedups.cpp:20962:22: note: in expansion of macro ‘PyUnicode_GET_SIZE’
                           (PyUnicode_GET_SIZE(**name) != PyUnicode_GET_SIZE(key)) ? 1 :
                            ^
      /apps/hosted/spack/opt/spack/linux-rhel7-haswell/gcc-4.8.5/python-3.10.4-mmazwmt2setv7iasfcutia22qz7xatt6/include/python3.10/cpython/unicodeobject.h:451:75: warning: ‘Py_ssize_t _PyUnicode_get_wstr_length(PyObject*)’ is deprecated (declared at /apps/hosted/spack/opt/spack/linux-rhel7-haswell/gcc-4.8.5/python-3.10.4-mmazwmt2setv7iasfcutia22qz7xatt6/include/python3.10/cpython/unicodeobject.h:446) [-Wdeprecated-declarations]
       #define PyUnicode_WSTR_LENGTH(op) _PyUnicode_get_wstr_length((PyObject*)op)
                                                                                 ^
      /apps/hosted/spack/opt/spack/linux-rhel7-haswell/gcc-4.8.5/python-3.10.4-mmazwmt2setv7iasfcutia22qz7xatt6/include/python3.10/cpython/unicodeobject.h:264:8: note: in expansion of macro ‘PyUnicode_WSTR_LENGTH’
              PyUnicode_WSTR_LENGTH(op)))
              ^
      kiva/_cython_speedups.cpp:20962:22: note: in expansion of macro ‘PyUnicode_GET_SIZE’
                           (PyUnicode_GET_SIZE(**name) != PyUnicode_GET_SIZE(key)) ? 1 :
                            ^
      /apps/hosted/spack/opt/spack/linux-rhel7-haswell/gcc-4.8.5/python-3.10.4-mmazwmt2setv7iasfcutia22qz7xatt6/include/python3.10/cpython/unicodeobject.h:451:35: warning: ‘Py_ssize_t _PyUnicode_get_wstr_length(PyObject*)’ is deprecated (declared at /apps/hosted/spack/opt/spack/linux-rhel7-haswell/gcc-4.8.5/python-3.10.4-mmazwmt2setv7iasfcutia22qz7xatt6/include/python3.10/cpython/unicodeobject.h:446) [-Wdeprecated-declarations]
       #define PyUnicode_WSTR_LENGTH(op) _PyUnicode_get_wstr_length((PyObject*)op)
                                         ^
      /apps/hosted/spack/opt/spack/linux-rhel7-haswell/gcc-4.8.5/python-3.10.4-mmazwmt2setv7iasfcutia22qz7xatt6/include/python3.10/cpython/unicodeobject.h:261:7: note: in expansion of macro ‘PyUnicode_WSTR_LENGTH’
             PyUnicode_WSTR_LENGTH(op) :                    \
             ^
      kiva/_cython_speedups.cpp:20962:52: note: in expansion of macro ‘PyUnicode_GET_SIZE’
                           (PyUnicode_GET_SIZE(**name) != PyUnicode_GET_SIZE(key)) ? 1 :
                                                          ^
      /apps/hosted/spack/opt/spack/linux-rhel7-haswell/gcc-4.8.5/python-3.10.4-mmazwmt2setv7iasfcutia22qz7xatt6/include/python3.10/cpython/unicodeobject.h:451:75: warning: ‘Py_ssize_t _PyUnicode_get_wstr_length(PyObject*)’ is deprecated (declared at /apps/hosted/spack/opt/spack/linux-rhel7-haswell/gcc-4.8.5/python-3.10.4-mmazwmt2setv7iasfcutia22qz7xatt6/include/python3.10/cpython/unicodeobject.h:446) [-Wdeprecated-declarations]
       #define PyUnicode_WSTR_LENGTH(op) _PyUnicode_get_wstr_length((PyObject*)op)
                                                                                 ^
      /apps/hosted/spack/opt/spack/linux-rhel7-haswell/gcc-4.8.5/python-3.10.4-mmazwmt2setv7iasfcutia22qz7xatt6/include/python3.10/cpython/unicodeobject.h:261:7: note: in expansion of macro ‘PyUnicode_WSTR_LENGTH’
             PyUnicode_WSTR_LENGTH(op) :                    \
             ^
      kiva/_cython_speedups.cpp:20962:52: note: in expansion of macro ‘PyUnicode_GET_SIZE’
                           (PyUnicode_GET_SIZE(**name) != PyUnicode_GET_SIZE(key)) ? 1 :
                                                          ^
      /apps/hosted/spack/opt/spack/linux-rhel7-haswell/gcc-4.8.5/python-3.10.4-mmazwmt2setv7iasfcutia22qz7xatt6/include/python3.10/cpython/unicodeobject.h:262:14: warning: ‘Py_UNICODE* PyUnicode_AsUnicode(PyObject*)’ is deprecated (declared at /apps/hosted/spack/opt/spack/linux-rhel7-haswell/gcc-4.8.5/python-3.10.4-mmazwmt2setv7iasfcutia22qz7xatt6/include/python3.10/cpython/unicodeobject.h:580) [-Wdeprecated-declarations]
             ((void)PyUnicode_AsUnicode(_PyObject_CAST(op)),\
                    ^
      kiva/_cython_speedups.cpp:20962:52: note: in expansion of macro ‘PyUnicode_GET_SIZE’
                           (PyUnicode_GET_SIZE(**name) != PyUnicode_GET_SIZE(key)) ? 1 :
                                                          ^
      /apps/hosted/spack/opt/spack/linux-rhel7-haswell/gcc-4.8.5/python-3.10.4-mmazwmt2setv7iasfcutia22qz7xatt6/include/python3.10/cpython/unicodeobject.h:262:52: warning: ‘Py_UNICODE* PyUnicode_AsUnicode(PyObject*)’ is deprecated (declared at /apps/hosted/spack/opt/spack/linux-rhel7-haswell/gcc-4.8.5/python-3.10.4-mmazwmt2setv7iasfcutia22qz7xatt6/include/python3.10/cpython/unicodeobject.h:580) [-Wdeprecated-declarations]
             ((void)PyUnicode_AsUnicode(_PyObject_CAST(op)),\
                                                          ^
      kiva/_cython_speedups.cpp:20962:52: note: in expansion of macro ‘PyUnicode_GET_SIZE’
                           (PyUnicode_GET_SIZE(**name) != PyUnicode_GET_SIZE(key)) ? 1 :
                                                          ^
      /apps/hosted/spack/opt/spack/linux-rhel7-haswell/gcc-4.8.5/python-3.10.4-mmazwmt2setv7iasfcutia22qz7xatt6/include/python3.10/cpython/unicodeobject.h:451:35: warning: ‘Py_ssize_t _PyUnicode_get_wstr_length(PyObject*)’ is deprecated (declared at /apps/hosted/spack/opt/spack/linux-rhel7-haswell/gcc-4.8.5/python-3.10.4-mmazwmt2setv7iasfcutia22qz7xatt6/include/python3.10/cpython/unicodeobject.h:446) [-Wdeprecated-declarations]
       #define PyUnicode_WSTR_LENGTH(op) _PyUnicode_get_wstr_length((PyObject*)op)
                                         ^
      /apps/hosted/spack/opt/spack/linux-rhel7-haswell/gcc-4.8.5/python-3.10.4-mmazwmt2setv7iasfcutia22qz7xatt6/include/python3.10/cpython/unicodeobject.h:264:8: note: in expansion of macro ‘PyUnicode_WSTR_LENGTH’
              PyUnicode_WSTR_LENGTH(op)))
              ^
      kiva/_cython_speedups.cpp:20962:52: note: in expansion of macro ‘PyUnicode_GET_SIZE’
                           (PyUnicode_GET_SIZE(**name) != PyUnicode_GET_SIZE(key)) ? 1 :
                                                          ^
      /apps/hosted/spack/opt/spack/linux-rhel7-haswell/gcc-4.8.5/python-3.10.4-mmazwmt2setv7iasfcutia22qz7xatt6/include/python3.10/cpython/unicodeobject.h:451:75: warning: ‘Py_ssize_t _PyUnicode_get_wstr_length(PyObject*)’ is deprecated (declared at /apps/hosted/spack/opt/spack/linux-rhel7-haswell/gcc-4.8.5/python-3.10.4-mmazwmt2setv7iasfcutia22qz7xatt6/include/python3.10/cpython/unicodeobject.h:446) [-Wdeprecated-declarations]
       #define PyUnicode_WSTR_LENGTH(op) _PyUnicode_get_wstr_length((PyObject*)op)
                                                                                 ^
      /apps/hosted/spack/opt/spack/linux-rhel7-haswell/gcc-4.8.5/python-3.10.4-mmazwmt2setv7iasfcutia22qz7xatt6/include/python3.10/cpython/unicodeobject.h:264:8: note: in expansion of macro ‘PyUnicode_WSTR_LENGTH’
              PyUnicode_WSTR_LENGTH(op)))
              ^
      kiva/_cython_speedups.cpp:20962:52: note: in expansion of macro ‘PyUnicode_GET_SIZE’
                           (PyUnicode_GET_SIZE(**name) != PyUnicode_GET_SIZE(key)) ? 1 :
                                                          ^
      /apps/hosted/spack/opt/spack/linux-rhel7-haswell/gcc-4.8.5/python-3.10.4-mmazwmt2setv7iasfcutia22qz7xatt6/include/python3.10/cpython/unicodeobject.h:451:35: warning: ‘Py_ssize_t _PyUnicode_get_wstr_length(PyObject*)’ is deprecated (declared at /apps/hosted/spack/opt/spack/linux-rhel7-haswell/gcc-4.8.5/python-3.10.4-mmazwmt2setv7iasfcutia22qz7xatt6/include/python3.10/cpython/unicodeobject.h:446) [-Wdeprecated-declarations]
       #define PyUnicode_WSTR_LENGTH(op) _PyUnicode_get_wstr_length((PyObject*)op)
                                         ^
      /apps/hosted/spack/opt/spack/linux-rhel7-haswell/gcc-4.8.5/python-3.10.4-mmazwmt2setv7iasfcutia22qz7xatt6/include/python3.10/cpython/unicodeobject.h:261:7: note: in expansion of macro ‘PyUnicode_WSTR_LENGTH’
             PyUnicode_WSTR_LENGTH(op) :                    \
             ^
      kiva/_cython_speedups.cpp:20978:26: note: in expansion of macro ‘PyUnicode_GET_SIZE’
                               (PyUnicode_GET_SIZE(**argname) != PyUnicode_GET_SIZE(key)) ? 1 :
                                ^
      /apps/hosted/spack/opt/spack/linux-rhel7-haswell/gcc-4.8.5/python-3.10.4-mmazwmt2setv7iasfcutia22qz7xatt6/include/python3.10/cpython/unicodeobject.h:451:75: warning: ‘Py_ssize_t _PyUnicode_get_wstr_length(PyObject*)’ is deprecated (declared at /apps/hosted/spack/opt/spack/linux-rhel7-haswell/gcc-4.8.5/python-3.10.4-mmazwmt2setv7iasfcutia22qz7xatt6/include/python3.10/cpython/unicodeobject.h:446) [-Wdeprecated-declarations]
       #define PyUnicode_WSTR_LENGTH(op) _PyUnicode_get_wstr_length((PyObject*)op)
                                                                                 ^
      /apps/hosted/spack/opt/spack/linux-rhel7-haswell/gcc-4.8.5/python-3.10.4-mmazwmt2setv7iasfcutia22qz7xatt6/include/python3.10/cpython/unicodeobject.h:261:7: note: in expansion of macro ‘PyUnicode_WSTR_LENGTH’
             PyUnicode_WSTR_LENGTH(op) :                    \
             ^
      kiva/_cython_speedups.cpp:20978:26: note: in expansion of macro ‘PyUnicode_GET_SIZE’
                               (PyUnicode_GET_SIZE(**argname) != PyUnicode_GET_SIZE(key)) ? 1 :
                                ^
      /apps/hosted/spack/opt/spack/linux-rhel7-haswell/gcc-4.8.5/python-3.10.4-mmazwmt2setv7iasfcutia22qz7xatt6/include/python3.10/cpython/unicodeobject.h:262:14: warning: ‘Py_UNICODE* PyUnicode_AsUnicode(PyObject*)’ is deprecated (declared at /apps/hosted/spack/opt/spack/linux-rhel7-haswell/gcc-4.8.5/python-3.10.4-mmazwmt2setv7iasfcutia22qz7xatt6/include/python3.10/cpython/unicodeobject.h:580) [-Wdeprecated-declarations]
             ((void)PyUnicode_AsUnicode(_PyObject_CAST(op)),\
                    ^
      kiva/_cython_speedups.cpp:20978:26: note: in expansion of macro ‘PyUnicode_GET_SIZE’
                               (PyUnicode_GET_SIZE(**argname) != PyUnicode_GET_SIZE(key)) ? 1 :
                                ^
      /apps/hosted/spack/opt/spack/linux-rhel7-haswell/gcc-4.8.5/python-3.10.4-mmazwmt2setv7iasfcutia22qz7xatt6/include/python3.10/cpython/unicodeobject.h:262:52: warning: ‘Py_UNICODE* PyUnicode_AsUnicode(PyObject*)’ is deprecated (declared at /apps/hosted/spack/opt/spack/linux-rhel7-haswell/gcc-4.8.5/python-3.10.4-mmazwmt2setv7iasfcutia22qz7xatt6/include/python3.10/cpython/unicodeobject.h:580) [-Wdeprecated-declarations]
             ((void)PyUnicode_AsUnicode(_PyObject_CAST(op)),\
                                                          ^
      kiva/_cython_speedups.cpp:20978:26: note: in expansion of macro ‘PyUnicode_GET_SIZE’
                               (PyUnicode_GET_SIZE(**argname) != PyUnicode_GET_SIZE(key)) ? 1 :
                                ^
      /apps/hosted/spack/opt/spack/linux-rhel7-haswell/gcc-4.8.5/python-3.10.4-mmazwmt2setv7iasfcutia22qz7xatt6/include/python3.10/cpython/unicodeobject.h:451:35: warning: ‘Py_ssize_t _PyUnicode_get_wstr_length(PyObject*)’ is deprecated (declared at /apps/hosted/spack/opt/spack/linux-rhel7-haswell/gcc-4.8.5/python-3.10.4-mmazwmt2setv7iasfcutia22qz7xatt6/include/python3.10/cpython/unicodeobject.h:446) [-Wdeprecated-declarations]
       #define PyUnicode_WSTR_LENGTH(op) _PyUnicode_get_wstr_length((PyObject*)op)
                                         ^
      /apps/hosted/spack/opt/spack/linux-rhel7-haswell/gcc-4.8.5/python-3.10.4-mmazwmt2setv7iasfcutia22qz7xatt6/include/python3.10/cpython/unicodeobject.h:264:8: note: in expansion of macro ‘PyUnicode_WSTR_LENGTH’
              PyUnicode_WSTR_LENGTH(op)))
              ^
      kiva/_cython_speedups.cpp:20978:26: note: in expansion of macro ‘PyUnicode_GET_SIZE’
                               (PyUnicode_GET_SIZE(**argname) != PyUnicode_GET_SIZE(key)) ? 1 :
                                ^
      /apps/hosted/spack/opt/spack/linux-rhel7-haswell/gcc-4.8.5/python-3.10.4-mmazwmt2setv7iasfcutia22qz7xatt6/include/python3.10/cpython/unicodeobject.h:451:75: warning: ‘Py_ssize_t _PyUnicode_get_wstr_length(PyObject*)’ is deprecated (declared at /apps/hosted/spack/opt/spack/linux-rhel7-haswell/gcc-4.8.5/python-3.10.4-mmazwmt2setv7iasfcutia22qz7xatt6/include/python3.10/cpython/unicodeobject.h:446) [-Wdeprecated-declarations]
       #define PyUnicode_WSTR_LENGTH(op) _PyUnicode_get_wstr_length((PyObject*)op)
                                                                                 ^
      /apps/hosted/spack/opt/spack/linux-rhel7-haswell/gcc-4.8.5/python-3.10.4-mmazwmt2setv7iasfcutia22qz7xatt6/include/python3.10/cpython/unicodeobject.h:264:8: note: in expansion of macro ‘PyUnicode_WSTR_LENGTH’
              PyUnicode_WSTR_LENGTH(op)))
              ^
      kiva/_cython_speedups.cpp:20978:26: note: in expansion of macro ‘PyUnicode_GET_SIZE’
                               (PyUnicode_GET_SIZE(**argname) != PyUnicode_GET_SIZE(key)) ? 1 :
                                ^
      /apps/hosted/spack/opt/spack/linux-rhel7-haswell/gcc-4.8.5/python-3.10.4-mmazwmt2setv7iasfcutia22qz7xatt6/include/python3.10/cpython/unicodeobject.h:451:35: warning: ‘Py_ssize_t _PyUnicode_get_wstr_length(PyObject*)’ is deprecated (declared at /apps/hosted/spack/opt/spack/linux-rhel7-haswell/gcc-4.8.5/python-3.10.4-mmazwmt2setv7iasfcutia22qz7xatt6/include/python3.10/cpython/unicodeobject.h:446) [-Wdeprecated-declarations]
       #define PyUnicode_WSTR_LENGTH(op) _PyUnicode_get_wstr_length((PyObject*)op)
                                         ^
      /apps/hosted/spack/opt/spack/linux-rhel7-haswell/gcc-4.8.5/python-3.10.4-mmazwmt2setv7iasfcutia22qz7xatt6/include/python3.10/cpython/unicodeobject.h:261:7: note: in expansion of macro ‘PyUnicode_WSTR_LENGTH’
             PyUnicode_WSTR_LENGTH(op) :                    \
             ^
      kiva/_cython_speedups.cpp:20978:59: note: in expansion of macro ‘PyUnicode_GET_SIZE’
                               (PyUnicode_GET_SIZE(**argname) != PyUnicode_GET_SIZE(key)) ? 1 :
                                                                 ^
      /apps/hosted/spack/opt/spack/linux-rhel7-haswell/gcc-4.8.5/python-3.10.4-mmazwmt2setv7iasfcutia22qz7xatt6/include/python3.10/cpython/unicodeobject.h:451:75: warning: ‘Py_ssize_t _PyUnicode_get_wstr_length(PyObject*)’ is deprecated (declared at /apps/hosted/spack/opt/spack/linux-rhel7-haswell/gcc-4.8.5/python-3.10.4-mmazwmt2setv7iasfcutia22qz7xatt6/include/python3.10/cpython/unicodeobject.h:446) [-Wdeprecated-declarations]
       #define PyUnicode_WSTR_LENGTH(op) _PyUnicode_get_wstr_length((PyObject*)op)
                                                                                 ^
      /apps/hosted/spack/opt/spack/linux-rhel7-haswell/gcc-4.8.5/python-3.10.4-mmazwmt2setv7iasfcutia22qz7xatt6/include/python3.10/cpython/unicodeobject.h:261:7: note: in expansion of macro ‘PyUnicode_WSTR_LENGTH’
             PyUnicode_WSTR_LENGTH(op) :                    \
             ^
      kiva/_cython_speedups.cpp:20978:59: note: in expansion of macro ‘PyUnicode_GET_SIZE’
                               (PyUnicode_GET_SIZE(**argname) != PyUnicode_GET_SIZE(key)) ? 1 :
                                                                 ^
      /apps/hosted/spack/opt/spack/linux-rhel7-haswell/gcc-4.8.5/python-3.10.4-mmazwmt2setv7iasfcutia22qz7xatt6/include/python3.10/cpython/unicodeobject.h:262:14: warning: ‘Py_UNICODE* PyUnicode_AsUnicode(PyObject*)’ is deprecated (declared at /apps/hosted/spack/opt/spack/linux-rhel7-haswell/gcc-4.8.5/python-3.10.4-mmazwmt2setv7iasfcutia22qz7xatt6/include/python3.10/cpython/unicodeobject.h:580) [-Wdeprecated-declarations]
             ((void)PyUnicode_AsUnicode(_PyObject_CAST(op)),\
                    ^
      kiva/_cython_speedups.cpp:20978:59: note: in expansion of macro ‘PyUnicode_GET_SIZE’
                               (PyUnicode_GET_SIZE(**argname) != PyUnicode_GET_SIZE(key)) ? 1 :
                                                                 ^
      /apps/hosted/spack/opt/spack/linux-rhel7-haswell/gcc-4.8.5/python-3.10.4-mmazwmt2setv7iasfcutia22qz7xatt6/include/python3.10/cpython/unicodeobject.h:262:52: warning: ‘Py_UNICODE* PyUnicode_AsUnicode(PyObject*)’ is deprecated (declared at /apps/hosted/spack/opt/spack/linux-rhel7-haswell/gcc-4.8.5/python-3.10.4-mmazwmt2setv7iasfcutia22qz7xatt6/include/python3.10/cpython/unicodeobject.h:580) [-Wdeprecated-declarations]
             ((void)PyUnicode_AsUnicode(_PyObject_CAST(op)),\
                                                          ^
      kiva/_cython_speedups.cpp:20978:59: note: in expansion of macro ‘PyUnicode_GET_SIZE’
                               (PyUnicode_GET_SIZE(**argname) != PyUnicode_GET_SIZE(key)) ? 1 :
                                                                 ^
      /apps/hosted/spack/opt/spack/linux-rhel7-haswell/gcc-4.8.5/python-3.10.4-mmazwmt2setv7iasfcutia22qz7xatt6/include/python3.10/cpython/unicodeobject.h:451:35: warning: ‘Py_ssize_t _PyUnicode_get_wstr_length(PyObject*)’ is deprecated (declared at /apps/hosted/spack/opt/spack/linux-rhel7-haswell/gcc-4.8.5/python-3.10.4-mmazwmt2setv7iasfcutia22qz7xatt6/include/python3.10/cpython/unicodeobject.h:446) [-Wdeprecated-declarations]
       #define PyUnicode_WSTR_LENGTH(op) _PyUnicode_get_wstr_length((PyObject*)op)
                                         ^
      /apps/hosted/spack/opt/spack/linux-rhel7-haswell/gcc-4.8.5/python-3.10.4-mmazwmt2setv7iasfcutia22qz7xatt6/include/python3.10/cpython/unicodeobject.h:264:8: note: in expansion of macro ‘PyUnicode_WSTR_LENGTH’
              PyUnicode_WSTR_LENGTH(op)))
              ^
      kiva/_cython_speedups.cpp:20978:59: note: in expansion of macro ‘PyUnicode_GET_SIZE’
                               (PyUnicode_GET_SIZE(**argname) != PyUnicode_GET_SIZE(key)) ? 1 :
                                                                 ^
      /apps/hosted/spack/opt/spack/linux-rhel7-haswell/gcc-4.8.5/python-3.10.4-mmazwmt2setv7iasfcutia22qz7xatt6/include/python3.10/cpython/unicodeobject.h:451:75: warning: ‘Py_ssize_t _PyUnicode_get_wstr_length(PyObject*)’ is deprecated (declared at /apps/hosted/spack/opt/spack/linux-rhel7-haswell/gcc-4.8.5/python-3.10.4-mmazwmt2setv7iasfcutia22qz7xatt6/include/python3.10/cpython/unicodeobject.h:446) [-Wdeprecated-declarations]
       #define PyUnicode_WSTR_LENGTH(op) _PyUnicode_get_wstr_length((PyObject*)op)
                                                                                 ^
      /apps/hosted/spack/opt/spack/linux-rhel7-haswell/gcc-4.8.5/python-3.10.4-mmazwmt2setv7iasfcutia22qz7xatt6/include/python3.10/cpython/unicodeobject.h:264:8: note: in expansion of macro ‘PyUnicode_WSTR_LENGTH’
              PyUnicode_WSTR_LENGTH(op)))
              ^
      kiva/_cython_speedups.cpp:20978:59: note: in expansion of macro ‘PyUnicode_GET_SIZE’
                               (PyUnicode_GET_SIZE(**argname) != PyUnicode_GET_SIZE(key)) ? 1 :
                                                                 ^
      kiva/_cython_speedups.cpp: In function ‘PyObject* __Pyx_decode_c_string(const char*, Py_ssize_t, Py_ssize_t, const char*, const char*, PyObject* (*)(const char*, Py_ssize_t, const char*))’:
      kiva/_cython_speedups.cpp:22325:16: warning: ‘PyObject* PyUnicode_FromUnicode(const Py_UNICODE*, Py_ssize_t)’ is deprecated (declared at /apps/hosted/spack/opt/spack/linux-rhel7-haswell/gcc-4.8.5/python-3.10.4-mmazwmt2setv7iasfcutia22qz7xatt6/include/python3.10/cpython/unicodeobject.h:551) [-Wdeprecated-declarations]
               return PyUnicode_FromUnicode(NULL, 0);
                      ^
      kiva/_cython_speedups.cpp:22325:45: warning: ‘PyObject* PyUnicode_FromUnicode(const Py_UNICODE*, Py_ssize_t)’ is deprecated (declared at /apps/hosted/spack/opt/spack/linux-rhel7-haswell/gcc-4.8.5/python-3.10.4-mmazwmt2setv7iasfcutia22qz7xatt6/include/python3.10/cpython/unicodeobject.h:551) [-Wdeprecated-declarations]
               return PyUnicode_FromUnicode(NULL, 0);
                                                   ^
      error: command '/usr/bin/gcc' 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 enable
Failed to build enable
ERROR: Could not build wheels for enable, which is required to install pyproject.toml-based projects

UPDATE: Installing in a Python 3.9.12 venv does complete successfully.

[corranwebster]

You might need to use Cython to regenerate the C++ extension modules for 3.10 - they were likely generated on Python 3.6 and an older version of Cython.