Free-threaded Python Library Compatibility Checker

  error: subprocess-exited-with-error
  
  × pip subprocess to install build dependencies did not run successfully.
  │ exit code: 1
  ╰─> [11 lines of output]
      Traceback (most recent call last):
        File "/tmp/tmpos3p018r/venv/lib/python3.14t/site-packages/pip/__pip-runner__.py", line 50, in <module>
          runpy.run_module("pip", run_name="__main__", alter_sys=True)
          ~~~~~~~~~~~~~~~~^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
        File "<frozen runpy>", line 226, in run_module
        File "<frozen runpy>", line 98, in _run_module_code
        File "<frozen runpy>", line 88, in _run_code
        File "/tmp/tmpos3p018r/venv/lib/python3.14t/site-packages/pip/__main__.py", line 8, in <module>
          if sys.path[0] in ("", os.getcwd()):
                                 ~~~~~~~~~^^
      FileNotFoundError: [Errno 2] No such file or directory
      [end of output]
  
  note: This error originates from a subprocess, and is likely not a problem with pip.
error: subprocess-exited-with-error

× pip subprocess to install build dependencies 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.

File "/tmp/pip-build-env-ldn3t80x/overlay/lib/python3.14t/site-packages/setuptools/_distutils/compilers/C/unix.py", line 217, in _compile
          self.spawn(
          ~~~~~~~~~~^
              compiler_so_cxx + cc_args + [src, '-o', obj] + extra_postargs
              ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
          )
          ^
        File "/tmp/pip-install-1b6psbmg/grpcio_7f9513f0caf04db4bcb7893ce4637a3b/src/python/grpcio/_spawn_patch.py", line 66, in _commandfile_spawn
          _classic_spawn(self, command, **kwargs)
          ~~~~~~~~~~~~~~^^^^^^^^^^^^^^^^^^^^^^^^^
        File "/tmp/pip-build-env-ldn3t80x/overlay/lib/python3.14t/site-packages/setuptools/_distutils/compilers/C/base.py", line 1158, in spawn
          spawn(cmd, dry_run=self.dry_run, **kwargs)
          ~~~~~^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
        File "/tmp/pip-build-env-ldn3t80x/overlay/lib/python3.14t/site-packages/setuptools/_distutils/spawn.py", line 93, in spawn
          raise DistutilsExecError(
              f"command {_debug(cmd)!r} failed with exit code {err.returncode}"
          ) from err
      distutils.errors.DistutilsExecError: command '/usr/bin/c++' failed with exit code 1
      
      During handling of the above exception, another exception occurred:
      
      Traceback (most recent call last):
        File "/tmp/pip-install-1b6psbmg/grpcio_7f9513f0caf04db4bcb7893ce4637a3b/src/python/grpcio/commands.py", line 282, in build_extensions
          build_ext.build_ext.build_extensions(self)
          ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~^^^^^^
        File "/tmp/pip-build-env-ldn3t80x/overlay/lib/python3.14t/site-packages/setuptools/_distutils/command/build_ext.py", line 484, in build_extensions
          self._build_extensions_serial()
          ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~^^
        File "/tmp/pip-build-env-ldn3t80x/overlay/lib/python3.14t/site-packages/setuptools/_distutils/command/build_ext.py", line 510, in _build_extensions_serial
          self.build_extension(ext)
          ~~~~~~~~~~~~~~~~~~~~^^^^^
        File "/tmp/pip-build-env-ldn3t80x/overlay/lib/python3.14t/site-packages/setuptools/command/build_ext.py", line 261, in build_extension
          _build_ext.build_extension(self, ext)
          ~~~~~~~~~~~~~~~~~~~~~~~~~~^^^^^^^^^^^
        File "/tmp/pip-build-env-ldn3t80x/overlay/lib/python3.14t/site-packages/setuptools/_distutils/command/build_ext.py", line 565, in build_extension
          objects = self.compiler.compile(
              sources,
          ...<5 lines>...
              depends=ext.depends,
          )
        File "/tmp/pip-install-1b6psbmg/grpcio_7f9513f0caf04db4bcb7893ce4637a3b/src/python/grpcio/_parallel_compile_patch.py", line 70, in _parallel_compile
          multiprocessing.pool.ThreadPool(BUILD_EXT_COMPILER_JOBS).map(
          ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~^
              _compile_single_file, objects
              ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
          )
          ^
        File "/root/.local/share/uv/python/cpython-3.14.0b4+freethreaded-linux-x86_64-gnu/lib/python3.14t/multiprocessing/pool.py", line 367, in map
          return self._map_async(func, iterable, mapstar, chunksize).get()
                 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~^^
        File "/root/.local/share/uv/python/cpython-3.14.0b4+freethreaded-linux-x86_64-gnu/lib/python3.14t/multiprocessing/pool.py", line 774, in get
          raise self._value
        File "/root/.local/share/uv/python/cpython-3.14.0b4+freethreaded-linux-x86_64-gnu/lib/python3.14t/multiprocessing/pool.py", line 125, in worker
          result = (True, func(*args, **kwds))
                          ~~~~^^^^^^^^^^^^^^^
        File "/root/.local/share/uv/python/cpython-3.14.0b4+freethreaded-linux-x86_64-gnu/lib/python3.14t/multiprocessing/pool.py", line 48, in mapstar
          return list(map(*args))
        File "/tmp/pip-install-1b6psbmg/grpcio_7f9513f0caf04db4bcb7893ce4637a3b/src/python/grpcio/_parallel_compile_patch.py", line 65, in _compile_single_file
          self._compile(obj, src, ext, cc_args, extra_postargs, pp_opts)
          ~~~~~~~~~~~~~^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
        File "/tmp/pip-install-1b6psbmg/grpcio_7f9513f0caf04db4bcb7893ce4637a3b/src/python/grpcio/commands.py", line 264, in new_compile
          return old_compile(obj, src, ext, cc_args, extra_postargs, pp_opts)
        File "/tmp/pip-build-env-ldn3t80x/overlay/lib/python3.14t/site-packages/setuptools/_distutils/compilers/C/unix.py", line 223, in _compile
          raise CompileError(msg)
      distutils.compilers.C.errors.CompileError: command '/usr/bin/c++' 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 grpcio
error: failed-wheel-build-for-install

× Failed to build installable wheels for some pyproject.toml based projects
╰─> grpcio