Free-threaded Python Library Compatibility Checker

md.py", line 357, in run_command
          self.distribution.run_command(command)
          ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~^^^^^^^^^
        File "/tmp/pip-build-env-sswaujze/overlay/lib/python3.14t/site-packages/setuptools/dist.py", line 1102, in run_command
          super().run_command(command)
          ~~~~~~~~~~~~~~~~~~~^^^^^^^^^
        File "/tmp/pip-build-env-sswaujze/overlay/lib/python3.14t/site-packages/setuptools/_distutils/dist.py", line 1021, in run_command
          cmd_obj.run()
          ~~~~~~~~~~~^^
        File "/tmp/pip-build-env-sswaujze/overlay/lib/python3.14t/site-packages/setuptools/_distutils/command/build.py", line 135, in run
          self.run_command(cmd_name)
          ~~~~~~~~~~~~~~~~^^^^^^^^^^
        File "/tmp/pip-build-env-sswaujze/overlay/lib/python3.14t/site-packages/setuptools/_distutils/cmd.py", line 357, in run_command
          self.distribution.run_command(command)
          ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~^^^^^^^^^
        File "/tmp/pip-build-env-sswaujze/overlay/lib/python3.14t/site-packages/setuptools/dist.py", line 1102, in run_command
          super().run_command(command)
          ~~~~~~~~~~~~~~~~~~~^^^^^^^^^
        File "/tmp/pip-build-env-sswaujze/overlay/lib/python3.14t/site-packages/setuptools/_distutils/dist.py", line 1021, in run_command
          cmd_obj.run()
          ~~~~~~~~~~~^^
        File "/tmp/pip-build-env-sswaujze/overlay/lib/python3.14t/site-packages/setuptools/command/build_ext.py", line 96, in run
          _build_ext.run(self)
          ~~~~~~~~~~~~~~^^^^^^
        File "/tmp/pip-build-env-sswaujze/overlay/lib/python3.14t/site-packages/setuptools/_distutils/command/build_ext.py", line 368, in run
          self.build_extensions()
          ~~~~~~~~~~~~~~~~~~~~~^^
        File "<string>", line 862, in build_extensions
      RequiredDependencyException: zlib
      
      During handling of the above exception, another exception occurred:
      
      Traceback (most recent call last):
        File "/tmp/tmperjbex7r/venv/lib/python3.14t/site-packages/pip/_vendor/pyproject_hooks/_in_process/_in_process.py", line 389, in <module>
          main()
          ~~~~^^
        File "/tmp/tmperjbex7r/venv/lib/python3.14t/site-packages/pip/_vendor/pyproject_hooks/_in_process/_in_process.py", line 373, in main
          json_out["return_val"] = hook(**hook_input["kwargs"])
                                   ~~~~^^^^^^^^^^^^^^^^^^^^^^^^
        File "/tmp/tmperjbex7r/venv/lib/python3.14t/site-packages/pip/_vendor/pyproject_hooks/_in_process/_in_process.py", line 280, in build_wheel
          return _build_backend().build_wheel(
                 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~^
              wheel_directory, config_settings, metadata_directory
              ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
          )
          ^
        File "/tmp/pip-install-w7s854nw/pillow_7d20407a6b96469884eb871ec4e6f2a4/_custom_build/backend.py", line 26, in build_wheel
          return super().build_wheel(wheel_directory, config_settings, metadata_directory)
                 ~~~~~~~~~~~~~~~~~~~^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
        File "/tmp/pip-build-env-sswaujze/overlay/lib/python3.14t/site-packages/setuptools/build_meta.py", line 435, in build_wheel
          return _build(['bdist_wheel', '--dist-info-dir', str(metadata_directory)])
        File "/tmp/pip-build-env-sswaujze/overlay/lib/python3.14t/site-packages/setuptools/build_meta.py", line 423, in _build
          return self._build_with_temp_dir(
                 ~~~~~~~~~~~~~~~~~~~~~~~~~^
              cmd,
              ^^^^
          ...<3 lines>...
              self._arbitrary_args(config_settings),
              ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
          )
          ^
        File "/tmp/pip-build-env-sswaujze/overlay/lib/python3.14t/site-packages/setuptools/build_meta.py", line 404, in _build_with_temp_dir
          self.run_setup()
          ~~~~~~~~~~~~~~^^
        File "/tmp/pip-install-w7s854nw/pillow_7d20407a6b96469884eb871ec4e6f2a4/_custom_build/backend.py", line 20, in run_setup
          return super().run_setup(setup_script)
                 ~~~~~~~~~~~~~~~~~^^^^^^^^^^^^^^
        File "/tmp/pip-build-env-sswaujze/overlay/lib/python3.14t/site-packages/setuptools/build_meta.py", line 317, in run_setup
          exec(code, locals())
          ~~~~^^^^^^^^^^^^^^^^
        File "<string>", line 1069, in <module>
      RequiredDependencyException:
      
      The headers or library files could not be found for zlib,
      a required dependency when compiling Pillow from source.
      
      Please see the install instructions at:
         https://pillow.readthedocs.io/en/latest/installation/basic-installation.html
      
      
      [end of output]
  
  note: This error originates from a subprocess, and is likely not a problem with pip.
  ERROR: Failed building wheel for pillow
ERROR: Failed to build installable wheels for some pyproject.toml based projects (pillow)

  error: subprocess-exited-with-error
  
  × Building wheel for pydantic-core (pyproject.toml) did not run successfully.
  │ exit code: 1
  ╰─> [15 lines of output]
      Running `maturin pep517 build-wheel -i /tmp/tmpm303jwgl/venv/bin/python --compatibility off`
      📦 Including license file "/tmp/pip-install-b3lk3j_n/pydantic-core_64c1d07d133d49738892a10f741d081d/LICENSE"
      🍹 Building a mixed python/rust project
      🔗 Found pyo3 bindings
      🐍 Found CPython 3.14t at /tmp/tmpm303jwgl/venv/bin/python
      📡 Using build options features, bindings from pyproject.toml
      warning: unused manifest key: lints
      error: package `icu_provider_macros v1.5.0` cannot be built because it requires rustc 1.67 or newer, while the currently active rustc version is 1.63.0
      Either upgrade to rustc 1.67 or newer, or use
      cargo update -p icu_provider_macros@1.5.0 --precise ver
      where `ver` is the latest version of `icu_provider_macros` supporting rustc 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/tmpm303jwgl/venv/bin/python" PYTHON_SYS_EXECUTABLE="/tmp/tmpm303jwgl/venv/bin/python" "cargo" "rustc" "--features" "pyo3/extension-module" "--message-format" "json-render-diagnostics" "--manifest-path" "/tmp/pip-install-b3lk3j_n/pydantic-core_64c1d07d133d49738892a10f741d081d/Cargo.toml" "--release" "--lib"`
      Error: command ['maturin', 'pep517', 'build-wheel', '-i', '/tmp/tmpm303jwgl/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 pydantic-core
ERROR: Failed to build installable wheels for some pyproject.toml based projects (pydantic-core)

                                          vectorcallfunc
      aiohttp/_websocket/mask.c: In function ‘__Pyx_CyFunction_CallAsMethod’:
      aiohttp/_websocket/mask.c:5580:6: error: unknown type name ‘__pyx_vectorcallfunc’; did you mean ‘vectorcallfunc’?
       5580 |      __pyx_vectorcallfunc vc = __Pyx_CyFunction_func_vectorcall(cyfunc);
            |      ^~~~~~~~~~~~~~~~~~~~
            |      vectorcallfunc
      aiohttp/_websocket/mask.c:1954:45: warning: initialization of ‘int’ from ‘vectorcallfunc’ {aka ‘struct _object * (*)(struct _object *, struct _object * const*, long unsigned int,  struct _object *)’} makes integer from pointer without a cast [-Wint-conversion]
       1954 | #define __Pyx_CyFunction_func_vectorcall(f) (((PyCFunctionObject*)f)->vectorcall)
            |                                             ^
      aiohttp/_websocket/mask.c:5580:32: note: in expansion of macro ‘__Pyx_CyFunction_func_vectorcall’
       5580 |      __pyx_vectorcallfunc vc = __Pyx_CyFunction_func_vectorcall(cyfunc);
            |                                ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
      aiohttp/_websocket/mask.c:5583:16: warning: implicit declaration of function ‘__Pyx_PyVectorcall_FastCallDict’ [-Wimplicit-function-declaration]
       5583 |         return __Pyx_PyVectorcall_FastCallDict(func, vc, &PyTuple_GET_ITEM(args, 0), (size_t)PyTuple_GET_SIZE(args), kw);
            |                ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
      aiohttp/_websocket/mask.c:5583:16: warning: returning ‘int’ from a function with return type ‘PyObject *’ {aka ‘struct _object *’} makes pointer from integer without a cast [-Wint-conversion]
       5583 |         return __Pyx_PyVectorcall_FastCallDict(func, vc, &PyTuple_GET_ITEM(args, 0), (size_t)PyTuple_GET_SIZE(args), kw);
            |                ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
      error: command '/usr/bin/cc' 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 aiohttp
  error: subprocess-exited-with-error
  
  × Building wheel for cryptography (pyproject.toml) did not run successfully.
  │ exit code: 1
  ╰─> [21 lines of output]
      Running `maturin pep517 build-wheel -i /tmp/tmpa5zoo6j5/venv/bin/python --compatibility off`
      📦 Including license file "/tmp/pip-install-fjlr_zqp/cryptography_ebb76e599f724682b437ebaee4fb0d1e/LICENSE"
      📦 Including license file "/tmp/pip-install-fjlr_zqp/cryptography_ebb76e599f724682b437ebaee4fb0d1e/LICENSE.APACHE"
      📦 Including license file "/tmp/pip-install-fjlr_zqp/cryptography_ebb76e599f724682b437ebaee4fb0d1e/LICENSE.BSD"
      🍹 Building a mixed python/rust project
      🔗 Found pyo3 bindings with abi3 support
      🐍 Found CPython 3.14t at /tmp/tmpa5zoo6j5/venv/bin/python
      📡 Using build options locked from pyproject.toml
      ⚠️ Warning: CPython 3.14t at /tmp/tmpa5zoo6j5/venv/bin/python does not yet support abi3 so the build artifacts will be version-specific.
      warning: /tmp/pip-install-fjlr_zqp/cryptography_ebb76e599f724682b437ebaee4fb0d1e/src/rust/cryptography-openssl/Cargo.toml: unused manifest key: lints
      warning: /tmp/pip-install-fjlr_zqp/cryptography_ebb76e599f724682b437ebaee4fb0d1e/src/rust/cryptography-key-parsing/Cargo.toml: unused manifest key: lints
      warning: /tmp/pip-install-fjlr_zqp/cryptography_ebb76e599f724682b437ebaee4fb0d1e/src/rust/Cargo.toml: unused manifest key: lints
      warning: /tmp/pip-install-fjlr_zqp/cryptography_ebb76e599f724682b437ebaee4fb0d1e/src/rust/cryptography-cffi/Cargo.toml: unused manifest key: lints
      error: package `asn1_derive v0.21.3` cannot be built because it requires rustc 1.65.0 or newer, while the currently active rustc version is 1.63.0
      Either upgrade to rustc 1.65.0 or newer, or use
      cargo update -p asn1_derive@0.21.3 --precise ver
      where `ver` is the latest version of `asn1_derive` supporting rustc 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/tmpa5zoo6j5/venv/bin/python" PYTHON_SYS_EXECUTABLE="/tmp/tmpa5zoo6j5/venv/bin/python" "cargo" "rustc" "--message-format" "json-render-diagnostics" "--locked" "--manifest-path" "/tmp/pip-install-fjlr_zqp/cryptography_ebb76e599f724682b437ebaee4fb0d1e/src/rust/Cargo.toml" "--release" "--lib"`
      Error: command ['maturin', 'pep517', 'build-wheel', '-i', '/tmp/tmpa5zoo6j5/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 (aiohttp, cryptography)

  error: subprocess-exited-with-error
  
  × Preparing metadata (pyproject.toml) did not run successfully.
  │ exit code: 1
  ╰─> [10 lines of output]
      Checking for Rust toolchain....
      Running `maturin pep517 write-dist-info --metadata-directory /tmp/pip-modern-metadata-o9yjezka --interpreter /tmp/tmpxrexk15z/venv/bin/python`
      error: failed to parse lock file at: /tmp/pip-install-8653mrfz/rpds-py_9422026861944d558aa30e363c96c73c/Cargo.lock
      
      Caused by:
        lock file version `4` was found, but this version of Cargo does not understand this lock file, perhaps Cargo needs to be updated?
      💥 maturin failed
        Caused by: Cargo metadata failed. Does your crate compile with `cargo build`?
        Caused by: `cargo metadata` exited with an error:
      Error running maturin: Command '['maturin', 'pep517', 'write-dist-info', '--metadata-directory', '/tmp/pip-modern-metadata-o9yjezka', '--interpreter', '/tmp/tmpxrexk15z/venv/bin/python']' 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: 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.

  error: subprocess-exited-with-error
  
  × Building wheel for pydantic-core (pyproject.toml) did not run successfully.
  │ exit code: 1
  ╰─> [15 lines of output]
      Running `maturin pep517 build-wheel -i /tmp/tmpyy2g0usb/venv/bin/python --compatibility off`
      📦 Including license file "LICENSE"
      🍹 Building a mixed python/rust project
      🔗 Found pyo3 bindings
      🐍 Found CPython 3.14t at /tmp/tmpyy2g0usb/venv/bin/python
      📡 Using build options features, bindings from pyproject.toml
      warning: unused manifest key: lints
      error: package `idna_adapter v1.2.0` cannot be built because it requires rustc 1.67.0 or newer, while the currently active rustc version is 1.63.0
      Either upgrade to rustc 1.67.0 or newer, or use
      cargo update -p idna_adapter@1.2.0 --precise ver
      where `ver` is the latest version of `idna_adapter` supporting rustc 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/tmpyy2g0usb/venv/bin/python" PYTHON_SYS_EXECUTABLE="/tmp/tmpyy2g0usb/venv/bin/python" "cargo" "rustc" "--features" "pyo3/extension-module" "--message-format" "json-render-diagnostics" "--manifest-path" "/tmp/pip-install-kjeujzi3/pydantic-core_db60d1c509b8495b82ef67cf2c562f17/Cargo.toml" "--release" "--lib"`
      Error: command ['maturin', 'pep517', 'build-wheel', '-i', '/tmp/tmpyy2g0usb/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 pydantic-core
ERROR: Failed to build installable wheels for some pyproject.toml based projects (pydantic-core)