Update PyO3 to 0.27

.github/workflows/test.yml

@@ -31,10 +31,10 @@ jobs:
             path: ~/Library/Caches/pip
           # more combinations:
           - os: ubuntu-22.04
-            python-version: "pypy3.9"
+            python-version: "pypy3.11"
             path: ~/.cache/pip
           - os: ubuntu-22.04-arm
-            python-version: "pypy3.9"
+            python-version: "pypy3.11"
             path: ~/.cache/pip
     steps:
       - uses: actions/checkout@v4

Cargo.toml

@@ -11,20 +11,25 @@ crate-type = ["cdylib"]
 [dependencies]
 num-bigint = ">=0.4.3,<0.5"
 owned_chars = ">=0.3.2,<0.4"
-pyo3 = { version = ">=0.18,<0.19", features = ["num-bigint"] }
+# TODO: Migrate off py-clone as recommended in
+# https://pyo3.rs/v0.27.1/migration.html?highlight=bound#pyclone-is-now-gated-behind-the-py-clone-feature
+pyo3 = { version = ">=0.27,<0.28", features = ["num-bigint", "py-clone"] }
 thiserror = ">=1.0.37,<2"
 utf8-chars = ">=2.0.2,<3"
 compact_str = ">=0.7.1,<0.8"
 utf8-io = ">=0.16.0,<0.17"
 #utf8-read = ">=0.4.0,<0.5"
 utf8-read = { git = "https://github.com/smheidrich/utf8-read-rs.git", branch = "configurable-chunk-size" }
 utf8-width = ">=0.1.6,<0.2"
+# TODO: Rust nightly has this same feature; get rid of this dependency once it
+# becomes stable
+unwrap-infallible = "0.1.5"
 
 [dev-dependencies]
 rstest = ">=0.18.1,<0.19"
 
 [build-dependencies]
-pyo3-build-config = { version = "= 0.18.3", features = ["resolve-config"] }
+pyo3-build-config = { version = ">=0.27,<0.28", features = ["resolve-config"] }
 
 # workaround for linkage errors when running cargo test:
 # https://pyo3.rs/v0.18.1/faq#i-cant-run-cargo-test-or-i-cant-build-in-a-cargo-workspace-im-having-linker-issues-like-symbol-not-found-or-undefined-reference-to-_pyexc_systemerror

src/int.rs

@@ -23,7 +23,7 @@ pub enum AppropriateInt {
     Big(BigInt),
 }
 
-#[cfg(all(any(Py_LIMITED_API, PyPy)))]
+#[cfg(any(Py_LIMITED_API, PyPy))]
 pub enum AppropriateInt {
     Normal(i64),
     Big(String), // to be converted into int on the Python side
@@ -50,16 +50,22 @@ impl FromStr for AppropriateInt {
     }
 }
 
-impl IntoPy<PyObject> for AppropriateInt {
-    fn into_py(self, py: Python<'_>) -> PyObject {
-        match self {
-            AppropriateInt::Normal(num) => num.into_py(py),
-            AppropriateInt::Big(num) => num.into_py(py),
-        }
+impl<'py> IntoPyObject<'py> for AppropriateInt {
+    type Target = PyAny;
+    type Output = Bound<'py, Self::Target>;
+    type Error = PyErr;
+
+    fn into_pyobject(self, py: Python<'py>) -> Result<Self::Output, Self::Error> {
+        Ok(match self {
+            AppropriateInt::Normal(num) => num.into_pyobject(py)?.into_any(),
+            AppropriateInt::Big(num) => num.into_pyobject(py)?.into_any(),
+        })
     }
 }
 
 pub fn supports_bigint() -> bool {
+    // TODO: I think both of these *do* support BigInt in recent PyO3 versions => test & lift
+    //       restriction
     #[cfg(any(Py_LIMITED_API, PyPy))]
     {
         return false;