Forward cfgs on pyclass fields to the method defs

pyo3-macros-backend/src/pymethod.rs

@@ -519,7 +519,15 @@ pub fn impl_py_setter_def(
         }
     };
 
+    let mut cfg_attrs = TokenStream::new();
+    if let PropertyType::Descriptor { field, .. } = &property_type {
+        for attr in field.attrs.iter().filter(|attr| attr.path.is_ident("cfg")) {
+            attr.to_tokens(&mut cfg_attrs);
+        }
+    }
+
     let associated_method = quote! {
+        #cfg_attrs
         unsafe fn #wrapper_ident(
             _py: _pyo3::Python<'_>,
             _slf: *mut _pyo3::ffi::PyObject,
@@ -538,6 +546,7 @@ pub fn impl_py_setter_def(
     };
 
     let method_def = quote! {
+        #cfg_attrs
         _pyo3::class::PyMethodDefType::Setter({
             #deprecations
             _pyo3::class::PySetterDef::new(
@@ -653,7 +662,15 @@ pub fn impl_py_getter_def(
         }
     };
 
+    let mut cfg_attrs = TokenStream::new();
+    if let PropertyType::Descriptor { field, .. } = &property_type {
+        for attr in field.attrs.iter().filter(|attr| attr.path.is_ident("cfg")) {
+            attr.to_tokens(&mut cfg_attrs);
+        }
+    }
+
     let associated_method = quote! {
+        #cfg_attrs
         unsafe fn #wrapper_ident(
             _py: _pyo3::Python<'_>,
             _slf: *mut _pyo3::ffi::PyObject
@@ -665,6 +682,7 @@ pub fn impl_py_getter_def(
     };
 
     let method_def = quote! {
+        #cfg_attrs
         _pyo3::class::PyMethodDefType::Getter({
             #deprecations
             _pyo3::class::PyGetterDef::new(

src/test_hygiene/pyclass.rs

@@ -34,3 +34,28 @@ pub struct Bar {
 pub enum Enum {
     Var0,
 }
+
+#[crate::pyclass]
+#[pyo3(crate = "crate")]
+pub struct Foo3 {
+    #[pyo3(get, set)]
+    #[cfg(FALSE)]
+    field: i32,
+
+    #[pyo3(get, set)]
+    #[cfg(not(FALSE))]
+    field: u32,
+}
+
+#[crate::pyclass]
+#[pyo3(crate = "crate")]
+pub struct Foo4 {
+    #[pyo3(get, set)]
+    #[cfg(FALSE)]
+    #[cfg(not(FALSE))]
+    field: i32,
+
+    #[pyo3(get, set)]
+    #[cfg(any(not(FALSE)))]
+    field: u32,
+}