[BUG] PyPy: TypeError: 'NoneType' object is not subscriptable (key slice(None, None, None))

[hugovk]

setuptools version

setuptools==72.2.0

Python version

PyPy 3.10

OS

Ubuntu and macOS but not Windows

Additional environment information

No response

Description

Running python -m pip install . for https://github.com/ultrajson/ultrajson fails for Ubuntu and macOS but not Windows.

Our CI passed on 1st August (when 72.1.0 was current):

https://github.com/ultrajson/ultrajson/actions/runs/10192609686

And failed today with no other code changes (74.0.0 is current):

https://github.com/ultrajson/ultrajson/actions/runs/10651820147

Pinning our build backend to older versions, the first one to fail was 72.2.0 from 2nd August:

https://github.com/hugovk/ultrajson/actions/runs/10656680834

The end of the traceback reads:

        File "/tmp/pip-build-env-hfi_5v1q/overlay/lib/pypy3.10/site-packages/setuptools/_distutils/unixccompiler.py", line 268, in link
          linker = (
      TypeError: 'NoneType' object is not subscriptable (key slice(None, None, None))

This seems to track with the changes in 72.2.0:

Merged with pypa/distutils@b7ee725f3 including: Support for Pathlike objects in data files and extensions (pypa/distutils#272, pypa/distutils#237), native support for C++ compilers (pypa/distuils#228) and removed unused get_msvcr() (pypa/distutils#274). (#4538)

https://setuptools.pypa.io/en/stable/history.html#v72-2-0

Expected behavior

It should build for PyPy3.10, as it did for 72.1.0, and as it does for CPython 3.8-3.13.

How to Reproduce

With pypy3.10:

git clone https://github.com/ultrajson/ultrajson
cd ultrajson
git checkout 60e68ab041e09c72805895531a0d8bd5260d1950 # commit before pinning setuptools < 72.2
python -m pip install -e .

Output

...
Processing /home/runner/work/ultrajson/ultrajson
  Installing build dependencies: started
  Installing build dependencies: finished with status 'done'
  Getting requirements to build wheel: started
  Getting requirements to build wheel: finished with status 'done'
  Preparing metadata (pyproject.toml): started
  Preparing metadata (pyproject.toml): finished with status 'done'
Building wheels for collected packages: ujson
  Building wheel for ujson (pyproject.toml): started
  Building wheel for ujson (pyproject.toml): finished with status 'error'
  error: subprocess-exited-with-error
  
  × Building wheel for ujson (pyproject.toml) did not run successfully.
  │ exit code: 1
  ╰─> [92 lines of output]
      /tmp/pip-build-env-hfi_5v1q/overlay/lib/pypy3.10/site-packages/setuptools_scm/git.py:167: UserWarning: "/home/runner/work/ultrajson/ultrajson" is shallow and may cause errors
        warnings.warn(f'"{wd.path}" is shallow and may cause errors')
      running bdist_wheel
      running build
      running build_py
      running build_ext
      building 'ujson' extension
      creating build
      creating build/temp.linux-x86_64-pypy310
      creating build/temp.linux-x86_64-pypy310/src
      creating build/temp.linux-x86_64-pypy310/src/_vendor
      creating build/temp.linux-x86_64-pypy310/src/_vendor/double-conversion
      creating build/temp.linux-x86_64-pypy310/src/_vendor/double-conversion/double-conversion
      creating build/temp.linux-x86_64-pypy310/src/lib
      creating build/temp.linux-x86_64-pypy310/src/python
      g++ -pthread -DNDEBUG -O2 -fPIC -I./src/python -I./src/lib -I./src/_vendor/double-conversion/double-conversion -I/opt/hostedtoolcache/PyPy/3.10.14/x64/include/pypy3.10 -c ./src/_vendor/double-conversion/double-conversion/bignum-dtoa.cc -o build/temp.linux-x86_64-pypy310/./src/_vendor/double-conversion/double-conversion/bignum-dtoa.o -D_GNU_SOURCE
      g++ -pthread -DNDEBUG -O2 -fPIC -I./src/python -I./src/lib -I./src/_vendor/double-conversion/double-conversion -I/opt/hostedtoolcache/PyPy/3.10.14/x64/include/pypy3.10 -c ./src/_vendor/double-conversion/double-conversion/bignum.cc -o build/temp.linux-x86_64-pypy310/./src/_vendor/double-conversion/double-conversion/bignum.o -D_GNU_SOURCE
      g++ -pthread -DNDEBUG -O2 -fPIC -I./src/python -I./src/lib -I./src/_vendor/double-conversion/double-conversion -I/opt/hostedtoolcache/PyPy/3.10.14/x64/include/pypy3.10 -c ./src/_vendor/double-conversion/double-conversion/cached-powers.cc -o build/temp.linux-x86_64-pypy310/./src/_vendor/double-conversion/double-conversion/cached-powers.o -D_GNU_SOURCE
      g++ -pthread -DNDEBUG -O2 -fPIC -I./src/python -I./src/lib -I./src/_vendor/double-conversion/double-conversion -I/opt/hostedtoolcache/PyPy/3.10.14/x64/include/pypy3.10 -c ./src/_vendor/double-conversion/double-conversion/double-to-string.cc -o build/temp.linux-x86_64-pypy310/./src/_vendor/double-conversion/double-conversion/double-to-string.o -D_GNU_SOURCE
      g++ -pthread -DNDEBUG -O2 -fPIC -I./src/python -I./src/lib -I./src/_vendor/double-conversion/double-conversion -I/opt/hostedtoolcache/PyPy/3.10.14/x64/include/pypy3.10 -c ./src/_vendor/double-conversion/double-conversion/fast-dtoa.cc -o build/temp.linux-x86_64-pypy310/./src/_vendor/double-conversion/double-conversion/fast-dtoa.o -D_GNU_SOURCE
      g++ -pthread -DNDEBUG -O2 -fPIC -I./src/python -I./src/lib -I./src/_vendor/double-conversion/double-conversion -I/opt/hostedtoolcache/PyPy/3.10.14/x64/include/pypy3.10 -c ./src/_vendor/double-conversion/double-conversion/fixed-dtoa.cc -o build/temp.linux-x86_64-pypy310/./src/_vendor/double-conversion/double-conversion/fixed-dtoa.o -D_GNU_SOURCE
      g++ -pthread -DNDEBUG -O2 -fPIC -I./src/python -I./src/lib -I./src/_vendor/double-conversion/double-conversion -I/opt/hostedtoolcache/PyPy/3.10.14/x64/include/pypy3.10 -c ./src/_vendor/double-conversion/double-conversion/string-to-double.cc -o build/temp.linux-x86_64-pypy310/./src/_vendor/double-conversion/double-conversion/string-to-double.o -D_GNU_SOURCE
      g++ -pthread -DNDEBUG -O2 -fPIC -I./src/python -I./src/lib -I./src/_vendor/double-conversion/double-conversion -I/opt/hostedtoolcache/PyPy/3.10.14/x64/include/pypy3.10 -c ./src/_vendor/double-conversion/double-conversion/strtod.cc -o build/temp.linux-x86_64-pypy310/./src/_vendor/double-conversion/double-conversion/strtod.o -D_GNU_SOURCE
      g++ -pthread -DNDEBUG -O2 -fPIC -I./src/python -I./src/lib -I./src/_vendor/double-conversion/double-conversion -I/opt/hostedtoolcache/PyPy/3.10.14/x64/include/pypy3.10 -c ./src/lib/dconv_wrapper.cc -o build/temp.linux-x86_64-pypy310/./src/lib/dconv_wrapper.o -D_GNU_SOURCE
      gcc -pthread -DNDEBUG -O2 -DDEBUG -fPIC -I./src/python -I./src/lib -I./src/_vendor/double-conversion/double-conversion -I/opt/hostedtoolcache/PyPy/3.10.14/x64/include/pypy3.10 -c ./src/lib/ultrajsondec.c -o build/temp.linux-x86_64-pypy310/./src/lib/ultrajsondec.o -D_GNU_SOURCE
      gcc -pthread -DNDEBUG -O2 -DDEBUG -fPIC -I./src/python -I./src/lib -I./src/_vendor/double-conversion/double-conversion -I/opt/hostedtoolcache/PyPy/3.10.14/x64/include/pypy3.10 -c ./src/lib/ultrajsonenc.c -o build/temp.linux-x86_64-pypy310/./src/lib/ultrajsonenc.o -D_GNU_SOURCE
      gcc -pthread -DNDEBUG -O2 -DDEBUG -fPIC -I./src/python -I./src/lib -I./src/_vendor/double-conversion/double-conversion -I/opt/hostedtoolcache/PyPy/3.10.14/x64/include/pypy3.10 -c ./src/python/JSONtoObj.c -o build/temp.linux-x86_64-pypy310/./src/python/JSONtoObj.o -D_GNU_SOURCE
      gcc -pthread -DNDEBUG -O2 -DDEBUG -fPIC -I./src/python -I./src/lib -I./src/_vendor/double-conversion/double-conversion -I/opt/hostedtoolcache/PyPy/3.10.14/x64/include/pypy3.10 -c ./src/python/objToJSON.c -o build/temp.linux-x86_64-pypy310/./src/python/objToJSON.o -D_GNU_SOURCE
      gcc -pthread -DNDEBUG -O2 -DDEBUG -fPIC -I./src/python -I./src/lib -I./src/_vendor/double-conversion/double-conversion -I/opt/hostedtoolcache/PyPy/3.10.14/x64/include/pypy3.10 -c ./src/python/ujson.c -o build/temp.linux-x86_64-pypy310/./src/python/ujson.o -D_GNU_SOURCE
      creating build/lib.linux-x86_64-pypy310
      Traceback (most recent call last):
        File "/opt/hostedtoolcache/PyPy/3.10.14/x64/lib/pypy3.10/site-packages/pip/_vendor/pyproject_hooks/_in_process/_in_process.py", line 353, in <module>
          main()
        File "/opt/hostedtoolcache/PyPy/3.10.14/x64/lib/pypy3.10/site-packages/pip/_vendor/pyproject_hooks/_in_process/_in_process.py", line 335, in main
          json_out['return_val'] = hook(**hook_input['kwargs'])
                                   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
        File "/opt/hostedtoolcache/PyPy/3.10.14/x64/lib/pypy3.10/site-packages/pip/_vendor/pyproject_hooks/_in_process/_in_process.py", line 2[51](https://github.com/hugovk/ultrajson/actions/runs/10656680834/job/29535602935#step:4:52), in build_wheel
          return _build_backend().build_wheel(wheel_directory, config_settings,
        File "/tmp/pip-build-env-hfi_5v1q/overlay/lib/pypy3.10/site-packages/setuptools/build_meta.py", line 415, in build_wheel
          return self._build_with_temp_dir(
        File "/tmp/pip-build-env-hfi_5v1q/overlay/lib/pypy3.10/site-packages/setuptools/build_meta.py", line 397, in _build_with_temp_dir
      TypeError: 'NoneType' object is not subscriptable (key slice(None, None, None))
      [end of output]

[abravalheri]

Possibly a duplicate of pypa/distutils#283?

[jaraco]

Yes, I think so. Let's follow the issue there.