feat(deps): remove once_cell dep in favor of std::sync::OnceLock

BREAKING CHANGE: This requires an MSRV bump to 1.70.0.

Author: zkat

Cargo.toml

@@ -15,7 +15,6 @@ exclude = ["images/", "tests/", "miette-derive/"]
 [dependencies]
 thiserror = "1.0.40"
 miette-derive = { path = "miette-derive", version = "=5.10.0", optional = true }
-once_cell = "1.8.0"
 unicode-width = "0.1.9"
 
 owo-colors = { version = "3.4.0", optional = true }

src/eyreish/mod.rs

@@ -7,8 +7,7 @@
 use core::fmt::Display;
 
 use std::error::Error as StdError;
-
-use once_cell::sync::OnceCell;
+use std::sync::OnceLock;
 
 #[allow(unreachable_pub)]
 pub use into_diagnostic::*;
@@ -62,7 +61,7 @@ unsafe impl Send for Report {}
 pub type ErrorHook =
     Box<dyn Fn(&(dyn Diagnostic + 'static)) -> Box<dyn ReportHandler> + Sync + Send + 'static>;
 
-static HOOK: OnceCell<ErrorHook> = OnceCell::new();
+static HOOK: OnceLock<ErrorHook> = OnceLock::new();
 
 /// Error indicating that [`set_hook()`] was unable to install the provided
 /// [`ErrorHook`].