generate_self_schema.py incompatible with Python 3.13.0b1

[domdfcoding]

Python 3.13.0b1 (initially python/cpython#118009 but there have been several follow ups) changed the signature of ForwardRef._evaluate so it is now _evaluate(globalns, localns, type_params=_sentinel, *, recursive_guard)

generate_self_schema.py calls this function as follows (with a fallback):

pydantic-core/generate_self_schema.py

Lines 191 to 196 in aed6844

	def eval_forward_ref(type_: Any) -> Any:
	try:
	return type_._evaluate(core_schema.__dict__, None, set())
	except TypeError:
	# for Python 3.8
	return type_._evaluate(core_schema.__dict__, None)

and therefore fails on both branches with TypeError: ForwardRef._evaluate() missing 1 required keyword-only argument: 'recursive_guard'

Locally I changed set() to recursive_guard=set() and it builds fine (with the UNSAFE_PYO3_SKIP_VERSION_CHECK environment variable).

Full build output

$ UNSAFE_PYO3_SKIP_VERSION_CHECK=1 RUST_BACKTRACE=1 python3.13 -m pip wheel pydantic-core
Collecting pydantic-core
  Downloading pydantic_core-2.18.2.tar.gz (383 kB)
     ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━ 383.4/383.4 kB 7.4 MB/s eta 0:00:00
  Installing build dependencies ... done
  Getting requirements to build wheel ... done
  Preparing metadata (pyproject.toml) ... done
Collecting typing-extensions!=4.7.0,>=4.6.0 (from pydantic-core)
  File was already downloaded /tmp/html-section/typing_extensions-4.11.0-py3-none-any.whl
Building wheels for collected packages: pydantic-core
  Building wheel for pydantic-core (pyproject.toml) ... error
  error: subprocess-exited-with-error
  
  × Building wheel for pydantic-core (pyproject.toml) did not run successfully.
  │ exit code: 1
  ╰─> [113 lines of output]
      Running `maturin pep517 build-wheel -i /home/domdf/.local/bin/python3.13 --compatibility off`
      📦 Including license file "/tmp/pip-wheel-9sifp5j1/pydantic-core_922dd6d3818c420ebd6d2e431ba1e09b/LICENSE"
      🍹 Building a mixed python/rust project
      🔗 Found pyo3 bindings
      🐍 Found CPython 3.13 at /home/domdf/.local/bin/python3.13
      📡 Using build options features, bindings from pyproject.toml
         Compiling target-lexicon v0.12.9
         Compiling autocfg v1.1.0
         Compiling python3-dll-a v0.2.9
         Compiling proc-macro2 v1.0.76
         Compiling unicode-ident v1.0.10
         Compiling once_cell v1.18.0
         Compiling libc v0.2.147
         Compiling heck v0.4.1
         Compiling cfg-if v1.0.0
         Compiling rustversion v1.0.13
         Compiling version_check v0.9.4
         Compiling parking_lot_core v0.9.8
         Compiling static_assertions v1.1.0
         Compiling smallvec v1.13.2
         Compiling portable-atomic v1.6.0
         Compiling tinyvec_macros v0.1.1
         Compiling scopeguard v1.1.0
         Compiling lexical-util v0.8.5
         Compiling tinyvec v1.6.0
         Compiling serde v1.0.197
         Compiling memchr v2.6.3
         Compiling unindent v0.2.3
         Compiling serde_json v1.0.114
         Compiling percent-encoding v2.3.1
         Compiling unicode-bidi v0.3.13
         Compiling hashbrown v0.14.3
         Compiling ahash v0.8.10
         Compiling num-traits v0.2.16
         Compiling num-integer v0.1.45
         Compiling lock_api v0.4.10
         Compiling memoffset v0.9.0
         Compiling num-bigint v0.4.4
         Compiling zerocopy v0.7.32
         Compiling regex-syntax v0.8.2
         Compiling quote v1.0.35
         Compiling pyo3-build-config v0.21.1
         Compiling aho-corasick v1.0.2
         Compiling equivalent v1.0.1
         Compiling getrandom v0.2.10
         Compiling indoc v2.0.4
         Compiling syn v2.0.48
         Compiling indexmap v2.2.2
         Compiling lexical-parse-integer v0.8.6
         Compiling unicode-normalization v0.1.22
         Compiling parking_lot v0.12.1
         Compiling form_urlencoded v1.2.1
         Compiling ryu v1.0.14
         Compiling lexical-parse-float v0.8.5
         Compiling itoa v1.0.8
         Compiling uuid v1.7.0
         Compiling base64 v0.21.7
         Compiling idna v0.5.0
         Compiling url v2.5.0
         Compiling pyo3-ffi v0.21.1
         Compiling pyo3 v0.21.1
         Compiling jiter v0.2.1
         Compiling pydantic-core v2.18.2 (/tmp/pip-wheel-9sifp5j1/pydantic-core_922dd6d3818c420ebd6d2e431ba1e09b)
         Compiling regex-automata v0.4.5
      error: failed to run custom build command for `pydantic-core v2.18.2 (/tmp/pip-wheel-9sifp5j1/pydantic-core_922dd6d3818c420ebd6d2e431ba1e09b)`
      note: To improve backtraces for build dependencies, set the CARGO_PROFILE_RELEASE_BUILD_OVERRIDE_DEBUG=true environment variable to enable debug information generation.
      
      Caused by:
        process didn't exit successfully: `/tmp/pip-wheel-9sifp5j1/pydantic-core_922dd6d3818c420ebd6d2e431ba1e09b/target/release/build/pydantic-core-a554cfcf76de52f4/build-script-build` (exit status: 101)
        --- stdout
        cargo:rustc-cfg=Py_3_6
        cargo:rustc-cfg=Py_3_7
        cargo:rustc-cfg=Py_3_8
        cargo:rustc-cfg=Py_3_9
        cargo:rustc-cfg=Py_3_10
        cargo:rustc-cfg=Py_3_11
        cargo:rustc-cfg=Py_3_12
        cargo:rustc-cfg=Py_3_13
        cargo:rerun-if-changed=python/pydantic_core/core_schema.py
        cargo:rerun-if-changed=generate_self_schema.py
      
        --- stderr
        Traceback (most recent call last):
          File "/tmp/pip-wheel-9sifp5j1/pydantic-core_922dd6d3818c420ebd6d2e431ba1e09b/generate_self_schema.py", line 193, in eval_forward_ref
            return type_._evaluate(core_schema.__dict__, None, set())
                   ~~~~~~~~~~~~~~~^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
        TypeError: ForwardRef._evaluate() missing 1 required keyword-only argument: 'recursive_guard'
      
        During handling of the above exception, another exception occurred:
      
        Traceback (most recent call last):
          File "/tmp/pip-wheel-9sifp5j1/pydantic-core_922dd6d3818c420ebd6d2e431ba1e09b/generate_self_schema.py", line 241, in <module>
            main()
            ~~~~^^
          File "/tmp/pip-wheel-9sifp5j1/pydantic-core_922dd6d3818c420ebd6d2e431ba1e09b/generate_self_schema.py", line 211, in main
            value = get_schema(s, definitions)
          File "/tmp/pip-wheel-9sifp5j1/pydantic-core_922dd6d3818c420ebd6d2e431ba1e09b/generate_self_schema.py", line 55, in get_schema
            return type_dict_schema(obj, definitions)
          File "/tmp/pip-wheel-9sifp5j1/pydantic-core_922dd6d3818c420ebd6d2e431ba1e09b/generate_self_schema.py", line 153, in type_dict_schema
            field_type = eval_forward_ref(field_type)
          File "/tmp/pip-wheel-9sifp5j1/pydantic-core_922dd6d3818c420ebd6d2e431ba1e09b/generate_self_schema.py", line 196, in eval_forward_ref
            return type_._evaluate(core_schema.__dict__, None)
                   ~~~~~~~~~~~~~~~^^^^^^^^^^^^^^^^^^^^^^^^^^^^
        TypeError: ForwardRef._evaluate() missing 1 required keyword-only argument: 'recursive_guard'
        thread 'main' panicked at build.rs:29:9:
        generate_self_schema.py failed with exit status: 1
        stack backtrace:
        note: Some details are omitted, run with `RUST_BACKTRACE=full` for a verbose backtrace.
      warning: build failed, waiting for other jobs to finish...
      💥 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-3.13-64bit" PYO3_PYTHON="/home/domdf/.local/bin/python3.13" PYTHON_SYS_EXECUTABLE="/home/domdf/.local/bin/python3.13" "cargo" "rustc" "--features" "pyo3/extension-module" "--message-format" "json-render-diagnostics" "--manifest-path" "/tmp/pip-wheel-9sifp5j1/pydantic-core_922dd6d3818c420ebd6d2e431ba1e09b/Cargo.toml" "--release" "--lib" "--crate-type" "cdylib"`
      Error: command ['maturin', 'pep517', 'build-wheel', '-i', '/home/domdf/.local/bin/python3.13', '--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
Failed to build pydantic-core
ERROR: Failed to build one or more wheels

[davidhewitt]

We'll be testing on 3.13 very soon, just waiting to get this in PyO3 first PyO3/pyo3#4184

[davidhewitt]

This particular error should be fixed in #1299