lower the msrv

Cargo.toml

@@ -21,6 +21,10 @@ used_linker = ["linkme-impl/used_linker"]
 [dependencies]
 linkme-impl = { version = "=0.3.31", path = "impl" }
 
+[target.'cfg(target_family = "wasm")'.dependencies]
+once_cell = "1.20.2"
+
+
 [dev-dependencies]
 once_cell = "1.16"
 rustversion = "1.0"

impl/src/declaration.rs

@@ -148,7 +148,7 @@ pub fn expand(input: TokenStream) -> TokenStream {
                     fn _init(a: *mut <#ty as #linkme_path::__private::Slice>::Element) -> *mut <#ty as #linkme_path::__private::Slice>::Element;
                     fn _len() -> usize;
                 }
-                static lazy: #linkme_path::__private::std::sync::OnceLock<#linkme_path::__private::StaticPtr<<#ty as #linkme_path::__private::Slice>::Element>> = #linkme_path::__private::std::sync::OnceLock::new();
+                static lazy: #linkme_path::__private::once_cell::sync::OnceCell<#linkme_path::__private::StaticPtr<<#ty as #linkme_path::__private::Slice>::Element>> = #linkme_path::__private::std::sync::OnceLock::new();
                 unsafe{
                     #linkme_path::DistributedSlice::private_new(#name,_init,_len,&lazy)
                 }

src/distributed_slice.rs

@@ -144,7 +144,7 @@ pub struct DistributedSlice<T: ?Sized + Slice> {
     #[cfg(not(target_family = "wasm"))]
     dupcheck_stop: StaticPtr<usize>,
     #[cfg(target_family = "wasm")]
-    lazy: &'static ::std::sync::OnceLock<StaticPtr<T::Element>>,
+    lazy: &'static ::once_cell::sync::OnceCell<StaticPtr<T::Element>>,
     #[cfg(target_family = "wasm")]
     init: unsafe fn(*mut T::Element) -> *mut T::Element,
     #[cfg(target_family = "wasm")]

src/private.rs

@@ -11,6 +11,10 @@ pub use core::ptr;
 #[doc(hidden)]
 pub use std;
 
+#[cfg(target_family = "wasm")]
+#[doc(hidden)]
+pub use once_cell;
+
 #[doc(hidden)]
 pub trait Slice {
     type Element;