Support for Python 3.13?

[RMPR]

pyo3 supports 3.13

I tried giving this a shot:

M Cargo.toml
@@ -22,7 +22,7 @@ name = "starlark"
 starlark = "^0.10.0"
 starlark_derive = "^0.10.0"
 anyhow = "^1.0.65"
-pyo3 = { version = "0.21.2", features = ["extension-module"] }
+pyo3 = { version = "0.22", features = ["extension-module"] }
 
 # needed to resolve contradictory constraints in dependencies
 syn = "^1.0.96"
M src/lib.rs
@@ -680,7 +680,7 @@ impl Module {
         self.0.set(name, b);
     }
 
-    fn freeze(mod_cell: &PyCell<Module>) -> PyResult<FrozenModule> {
+    fn freeze(mod_cell: &Bound<Module>) -> PyResult<FrozenModule> {
         let module = mod_cell
             .replace(Module(starlark::environment::Module::new()))
             .0;
@@ -752,7 +752,7 @@ fn empty_ast() -> AstModule {
 )]
 fn eval(
     module: &mut Module,
-    ast: &PyCell<AstModule>,
+    ast: &Bound<AstModule>,
     globals: &Globals,
     file_loader: Option<&Bound<FileLoader>>,
 ) -> PyResult<PyObject> {

But it's not a drop-in replacement:

error[E0599]: no method named `replace` found for reference `&pyo3::Bound<'_, Module>` in the current scope
   --> src/lib.rs:685:14
    |
684 |           let module = mod_cell
    |  ______________________-
685 | |             .replace(Module(starlark::environment::Module::new()))
    | |             -^^^^^^^ method not found in `&Bound<'_, Module>`
    | |_____________|
    |

error[E0599]: no method named `replace` found for reference `&pyo3::Bound<'_, AstModule>` in the current scope
   --> src/lib.rs:763:39
    |
763 |             evaluator.eval_module(ast.replace(empty_ast()).0, &globals.0),
    |                                       ^^^^^^^ method not found in `&Bound<'_, AstModule>`

[inducer]

I tried this, too, and I got stuck in the same places you did. 🙂 I'll spend the time at some point to get this to go. In the meantime, any help would be more than welcome.