Free-threaded Python Library Compatibility Checker

ck (most recent call last):
        File "/tmp/pip-build-env-ui7vhr92/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-lv6yfwjo/grpcio_4357da97dd4642879416d467f6e72c91/src/python/grpcio/_spawn_patch.py", line 66, in _commandfile_spawn
          _classic_spawn(self, command, **kwargs)
          ~~~~~~~~~~~~~~^^^^^^^^^^^^^^^^^^^^^^^^^
        File "/tmp/pip-build-env-ui7vhr92/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-ui7vhr92/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-lv6yfwjo/grpcio_4357da97dd4642879416d467f6e72c91/src/python/grpcio/commands.py", line 282, in build_extensions
          build_ext.build_ext.build_extensions(self)
          ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~^^^^^^
        File "/tmp/pip-build-env-ui7vhr92/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-ui7vhr92/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-ui7vhr92/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-ui7vhr92/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-lv6yfwjo/grpcio_4357da97dd4642879416d467f6e72c91/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-3.14.0a6+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-3.14.0a6+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-3.14.0a6+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-3.14.0a6+freethreaded-linux-x86_64-gnu/lib/python3.14t/multiprocessing/pool.py", line 48, in mapstar
          return list(map(*args))
        File "/tmp/pip-install-lv6yfwjo/grpcio_4357da97dd4642879416d467f6e72c91/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-lv6yfwjo/grpcio_4357da97dd4642879416d467f6e72c91/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-ui7vhr92/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 to build installable wheels for some pyproject.toml based projects (grpcio)

  error: subprocess-exited-with-error
  
  × Building wheel for cryptography (pyproject.toml) did not run successfully.
  │ exit code: 1
  ╰─> [19 lines of output]
      Running `maturin pep517 build-wheel -i /tmp/tmp1a06y48h/venv/bin/python --compatibility off`
      📦 Including license file "/tmp/pip-install-km3wrm4a/cryptography_c973a5dd56c1495eaa595622140ca21c/LICENSE"
      📦 Including license file "/tmp/pip-install-km3wrm4a/cryptography_c973a5dd56c1495eaa595622140ca21c/LICENSE.APACHE"
      📦 Including license file "/tmp/pip-install-km3wrm4a/cryptography_c973a5dd56c1495eaa595622140ca21c/LICENSE.BSD"
      🍹 Building a mixed python/rust project
      🔗 Found pyo3 bindings with abi3 support
      🐍 Found CPython 3.14t at /tmp/tmp1a06y48h/venv/bin/python
      📡 Using build options locked from pyproject.toml
      ⚠️ Warning: CPython 3.14t at /tmp/tmp1a06y48h/venv/bin/python does not yet support abi3 so the build artifacts will be version-specific.
      warning: /tmp/pip-install-km3wrm4a/cryptography_c973a5dd56c1495eaa595622140ca21c/src/rust/cryptography-openssl/Cargo.toml: unused manifest key: lints
      warning: /tmp/pip-install-km3wrm4a/cryptography_c973a5dd56c1495eaa595622140ca21c/src/rust/cryptography-key-parsing/Cargo.toml: unused manifest key: lints
      warning: /tmp/pip-install-km3wrm4a/cryptography_c973a5dd56c1495eaa595622140ca21c/src/rust/Cargo.toml: unused manifest key: lints
      warning: /tmp/pip-install-km3wrm4a/cryptography_c973a5dd56c1495eaa595622140ca21c/src/rust/cryptography-cffi/Cargo.toml: unused manifest key: lints
      error: package `cryptography-cffi v0.1.0 (/tmp/pip-install-km3wrm4a/cryptography_c973a5dd56c1495eaa595622140ca21c/src/rust/cryptography-cffi)` cannot be built because it requires rustc 1.74.0 or newer, while the currently active rustc version is 1.63.0
      
      💥 maturin failed
        Caused by: Failed to build a native library through cargo
        Caused by: Cargo build finished with "exit status: 101": `env -u CARGO PYO3_ENVIRONMENT_SIGNATURE="cpython-3.14-64bit" PYO3_PYTHON="/tmp/tmp1a06y48h/venv/bin/python" PYTHON_SYS_EXECUTABLE="/tmp/tmp1a06y48h/venv/bin/python" "cargo" "rustc" "--message-format" "json-render-diagnostics" "--locked" "--manifest-path" "/tmp/pip-install-km3wrm4a/cryptography_c973a5dd56c1495eaa595622140ca21c/src/rust/Cargo.toml" "--release" "--lib"`
      Error: command ['maturin', 'pep517', 'build-wheel', '-i', '/tmp/tmp1a06y48h/venv/bin/python', '--compatibility', 'off'] returned non-zero exit status 1
      [end of output]
  
  note: This error originates from a subprocess, and is likely not a problem with pip.
  ERROR: Failed building wheel for cryptography
ERROR: Failed to build installable wheels for some pyproject.toml based projects (cryptography)

            vectorcallfunc
      pandas/_libs/tslibs/base.cpython-314t-x86_64-linux-gnu.so.p/pandas/_libs/tslibs/base.pyx.c:8658:69: error: unknown type name ‘__pyx_vectorcallfunc’; did you mean ‘vectorcallfunc’?
       8658 | static PyObject *__Pyx_PyVectorcall_FastCallDict_kw(PyObject *func, __pyx_vectorcallfunc vc, PyObject *const *args, size_t nargs, PyObject *kw)
            |                                                                     ^~~~~~~~~~~~~~~~~~~~
            |                                                                     vectorcallfunc
      pandas/_libs/tslibs/base.cpython-314t-x86_64-linux-gnu.so.p/pandas/_libs/tslibs/base.pyx.c:8703:80: error: unknown type name ‘__pyx_vectorcallfunc’; did you mean ‘vectorcallfunc’?
       8703 | static CYTHON_INLINE PyObject *__Pyx_PyVectorcall_FastCallDict(PyObject *func, __pyx_vectorcallfunc vc, PyObject *const *args, size_t nargs, PyObject *kw)
            |                                                                                ^~~~~~~~~~~~~~~~~~~~
            |                                                                                vectorcallfunc
      pandas/_libs/tslibs/base.cpython-314t-x86_64-linux-gnu.so.p/pandas/_libs/tslibs/base.pyx.c: In function ‘__Pyx_CyFunction_CallAsMethod’:
      pandas/_libs/tslibs/base.cpython-314t-x86_64-linux-gnu.so.p/pandas/_libs/tslibs/base.pyx.c:9392:6: error: unknown type name ‘__pyx_vectorcallfunc’; did you mean ‘vectorcallfunc’?
       9392 |      __pyx_vectorcallfunc vc = __Pyx_CyFunction_func_vectorcall(cyfunc);
            |      ^~~~~~~~~~~~~~~~~~~~
            |      vectorcallfunc
      [42/151] Compiling Cython source /tmp/pip-install-ldot28vf/pandas_810fe2cd170540f8adb7d5f9dc869401/pandas/_libs/testing.pyx
      warning: /tmp/pip-install-ldot28vf/pandas_810fe2cd170540f8adb7d5f9dc869401/pandas/_libs/tslibs/util.pxd:188:38: noexcept clause is ignored for function returning Python object
      warning: /tmp/pip-install-ldot28vf/pandas_810fe2cd170540f8adb7d5f9dc869401/pandas/_libs/tslibs/util.pxd:193:40: noexcept clause is ignored for function returning Python object
      [43/151] Compiling Cython source /tmp/pip-install-ldot28vf/pandas_810fe2cd170540f8adb7d5f9dc869401/pandas/_libs/tslib.pyx
      warning: /tmp/pip-install-ldot28vf/pandas_810fe2cd170540f8adb7d5f9dc869401/pandas/_libs/tslibs/util.pxd:188:38: noexcept clause is ignored for function returning Python object
      warning: /tmp/pip-install-ldot28vf/pandas_810fe2cd170540f8adb7d5f9dc869401/pandas/_libs/tslibs/util.pxd:193:40: noexcept clause is ignored for function returning Python object
      [44/151] Compiling Cython source /tmp/pip-install-ldot28vf/pandas_810fe2cd170540f8adb7d5f9dc869401/pandas/_libs/hashtable.pyx
      warning: /tmp/pip-install-ldot28vf/pandas_810fe2cd170540f8adb7d5f9dc869401/pandas/_libs/tslibs/util.pxd:188:38: noexcept clause is ignored for function returning Python object
      warning: /tmp/pip-install-ldot28vf/pandas_810fe2cd170540f8adb7d5f9dc869401/pandas/_libs/tslibs/util.pxd:193:40: noexcept clause is ignored for function returning Python object
      [45/151] Compiling Cython source /tmp/pip-install-ldot28vf/pandas_810fe2cd170540f8adb7d5f9dc869401/pandas/_libs/algos.pyx
      warning: /tmp/pip-install-ldot28vf/pandas_810fe2cd170540f8adb7d5f9dc869401/pandas/_libs/tslibs/util.pxd:188:38: noexcept clause is ignored for function returning Python object
      warning: /tmp/pip-install-ldot28vf/pandas_810fe2cd170540f8adb7d5f9dc869401/pandas/_libs/tslibs/util.pxd:193:40: noexcept clause is ignored for function returning Python object
      [46/151] Compiling Cython source /tmp/pip-install-ldot28vf/pandas_810fe2cd170540f8adb7d5f9dc869401/pandas/_libs/window/indexers.pyx
      [47/151] Compiling Cython source /tmp/pip-install-ldot28vf/pandas_810fe2cd170540f8adb7d5f9dc869401/pandas/_libs/writers.pyx
      [48/151] Compiling Cython source /tmp/pip-install-ldot28vf/pandas_810fe2cd170540f8adb7d5f9dc869401/pandas/_libs/groupby.pyx
      warning: /tmp/pip-install-ldot28vf/pandas_810fe2cd170540f8adb7d5f9dc869401/pandas/_libs/tslibs/util.pxd:188:38: noexcept clause is ignored for function returning Python object
      warning: /tmp/pip-install-ldot28vf/pandas_810fe2cd170540f8adb7d5f9dc869401/pandas/_libs/tslibs/util.pxd:193:40: noexcept clause is ignored for function returning Python object
      [49/151] Compiling Cython source /tmp/pip-install-ldot28vf/pandas_810fe2cd170540f8adb7d5f9dc869401/pandas/_libs/window/aggregations.pyx
      [50/151] Compiling Cython source /tmp/pip-install-ldot28vf/pandas_810fe2cd170540f8adb7d5f9dc869401/pandas/_libs/sparse.pyx
      ninja: build stopped: subcommand failed.
      [end of output]
  
  note: This error originates from a subprocess, and is likely not a problem with pip.
error: metadata-generation-failed

× Encountered error while generating package metadata.
╰─> pandas

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

11b6 /tmp/pip-install-zul5qbhk/scipy_d253a3745714424092c11267a0ba11b6/.mesonpy-qtnvat6p -Dbuildtype=release -Db_ndebug=if-release -Db_vscrt=md --native-file=/tmp/pip-install-zul5qbhk/scipy_d253a3745714424092c11267a0ba11b6/.mesonpy-qtnvat6p/meson-python-native-file.ini
            The Meson build system
            Version: 1.8.3
            Source dir: /tmp/pip-install-zul5qbhk/scipy_d253a3745714424092c11267a0ba11b6
            Build dir: /tmp/pip-install-zul5qbhk/scipy_d253a3745714424092c11267a0ba11b6/.mesonpy-qtnvat6p
            Build type: native build
            Project name: scipy
            Project version: 1.15.3
            C compiler for the host machine: cc (gcc 12.2.0 "cc (Debian 12.2.0-14+deb12u1) 12.2.0")
            C linker for the host machine: cc ld.bfd 2.40
            C++ compiler for the host machine: c++ (gcc 12.2.0 "c++ (Debian 12.2.0-14+deb12u1) 12.2.0")
            C++ linker for the host machine: c++ ld.bfd 2.40
            Cython compiler for the host machine: cython (cython 3.0.12)
            Host machine cpu family: x86_64
            Host machine cpu: x86_64
            Program python found: YES (/tmp/tmptsi7k1l4/venv/bin/python)
            Did not find pkg-config by name 'pkg-config'
            Found pkg-config: NO
            Run-time dependency python found: YES 3.14
            Program cython found: YES (/tmp/pip-build-env-_a9pqwmb/overlay/bin/cython)
            Compiler for C supports arguments -Wno-unused-but-set-variable: YES
            Compiler for C supports arguments -Wno-unused-function: YES
            Compiler for C supports arguments -Wno-conversion: YES
            Compiler for C supports arguments -Wno-misleading-indentation: YES
            Library m found: YES
      
            ../meson.build:80:0: ERROR: Unknown compiler(s): [['gfortran'], ['flang-new'], ['flang'], ['nvfortran'], ['pgfortran'], ['ifort'], ['ifx'], ['g95']]
            The following exception(s) were encountered:
            Running `gfortran --help` gave "[Errno 2] No such file or directory: 'gfortran'"
            Running `gfortran --version` gave "[Errno 2] No such file or directory: 'gfortran'"
            Running `gfortran -V` gave "[Errno 2] No such file or directory: 'gfortran'"
            Running `flang-new --help` gave "[Errno 2] No such file or directory: 'flang-new'"
            Running `flang-new --version` gave "[Errno 2] No such file or directory: 'flang-new'"
            Running `flang-new -V` gave "[Errno 2] No such file or directory: 'flang-new'"
            Running `flang --help` gave "[Errno 2] No such file or directory: 'flang'"
            Running `flang --version` gave "[Errno 2] No such file or directory: 'flang'"
            Running `flang -V` gave "[Errno 2] No such file or directory: 'flang'"
            Running `nvfortran --help` gave "[Errno 2] No such file or directory: 'nvfortran'"
            Running `nvfortran --version` gave "[Errno 2] No such file or directory: 'nvfortran'"
            Running `nvfortran -V` gave "[Errno 2] No such file or directory: 'nvfortran'"
            Running `pgfortran --help` gave "[Errno 2] No such file or directory: 'pgfortran'"
            Running `pgfortran --version` gave "[Errno 2] No such file or directory: 'pgfortran'"
            Running `pgfortran -V` gave "[Errno 2] No such file or directory: 'pgfortran'"
            Running `ifort --help` gave "[Errno 2] No such file or directory: 'ifort'"
            Running `ifort --version` gave "[Errno 2] No such file or directory: 'ifort'"
            Running `ifort -V` gave "[Errno 2] No such file or directory: 'ifort'"
            Running `ifx --help` gave "[Errno 2] No such file or directory: 'ifx'"
            Running `ifx --version` gave "[Errno 2] No such file or directory: 'ifx'"
            Running `ifx -V` gave "[Errno 2] No such file or directory: 'ifx'"
            Running `g95 --help` gave "[Errno 2] No such file or directory: 'g95'"
            Running `g95 --version` gave "[Errno 2] No such file or directory: 'g95'"
            Running `g95 -V` gave "[Errno 2] No such file or directory: 'g95'"
      
            A full log can be found at /tmp/pip-install-zul5qbhk/scipy_d253a3745714424092c11267a0ba11b6/.mesonpy-qtnvat6p/meson-logs/meson-log.txt
            [end of output]
      
        note: This error originates from a subprocess, and is likely not a problem with pip.
      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.
      [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.