fix: use once_cell::lazy instead of LazyLock to avoid MSRV 1.80

Fix ordering of histogram lines in metrics example
Fix clippy lints

Cargo.toml

@@ -30,6 +30,7 @@ document-features = { version = "0.2.7", optional = true }
 instability = "0.3.1"
 itertools = "0.13"
 lru = "0.12.0"
+once_cell = "1.19.0"
 paste = "1.0.2"
 palette = { version = "0.7.6", optional = true }
 serde = { version = "1", optional = true, features = ["derive"] }

examples/metrics.rs

@@ -37,7 +37,7 @@ struct App {
 }
 
 impl App {
-    fn new(recorder_widget: RecorderWidget) -> Self {
+    const fn new(recorder_widget: RecorderWidget) -> Self {
         Self {
             should_quit: false,
             recorder_widget,
@@ -82,7 +82,7 @@ impl App {
 
     fn on_key_press(&mut self, key: event::KeyEvent) {
         match key.code {
-            KeyCode::Char('q') => self.should_quit = true,
+            KeyCode::Char('q') | KeyCode::Esc => self.should_quit = true,
             _ => {}
         }
     }
@@ -174,7 +174,7 @@ impl Widget for &RecorderWidget {
                 let p90 = Duration::from_secs_f64(summary.quantile(0.9).unwrap());
                 let p99 = Duration::from_secs_f64(summary.quantile(0.99).unwrap());
                 let line = format!(
-                    "min:{min:>9.2?}  max:{max:>9.2?}  p50:{p50:>9.2?}  p90:{p90:>9.2?}  p99:{p99:>9.2?}"
+                    "min:{min:>9.2?}  p50:{p50:>9.2?}  p90:{p90:>9.2?}  p99:{p99:>9.2?}  max:{max:>9.2?}"
                 );
                 histograms.push((key.clone(), line));
             }

src/backend.rs

@@ -100,9 +100,10 @@
 //! [Backend Comparison]:
 //!     https://ratatui.rs/concepts/backends/comparison/
 //! [Ratatui Website]: https://ratatui.rs
-use std::{io, sync::LazyLock};
+use std::io;
 
 use metrics::{Counter, Histogram};
+use once_cell::sync::Lazy;
 use strum::{Display, EnumString};
 
 use crate::{
@@ -129,7 +130,7 @@ pub use self::termwiz::TermwizBackend;
 mod test;
 pub use self::test::TestBackend;
 
-static METRICS: LazyLock<Metrics> = LazyLock::new(Metrics::new);
+static METRICS: Lazy<Metrics> = Lazy::new(Metrics::new);
 
 #[derive(Debug)]
 struct Metrics {

src/buffer/buffer.rs

@@ -1,10 +1,10 @@
 use std::{
     fmt,
     ops::{Index, IndexMut},
-    sync::LazyLock,
 };
 
 use metrics::Histogram;
+use once_cell::sync::Lazy;
 use unicode_segmentation::UnicodeSegmentation;
 use unicode_width::UnicodeWidthStr;
 
@@ -74,7 +74,7 @@ pub struct Buffer {
     pub content: Vec<Cell>,
 }
 
-static METRICS: LazyLock<Metrics> = LazyLock::new(Metrics::new);
+static METRICS: Lazy<Metrics> = Lazy::new(Metrics::new);
 
 struct Metrics {
     diff_duration: Histogram,

src/terminal/terminal.rs

@@ -1,6 +1,7 @@
-use std::{io, sync::LazyLock};
+use std::io;
 
 use metrics::{Counter, Histogram};
+use once_cell::sync::Lazy;
 
 use crate::{
     backend::ClearType, buffer::Cell, counter, duration_histogram, metrics::HistogramExt,
@@ -87,7 +88,7 @@ pub struct Options {
     pub viewport: Viewport,
 }
 
-static METRICS: LazyLock<Metrics> = LazyLock::new(Metrics::new);
+static METRICS: Lazy<Metrics> = Lazy::new(Metrics::new);
 
 #[derive(Debug)]
 struct Metrics {