chore: use std::syncLazyLock

Also migrates workspace members to Rust 2024.

src/widget/calendar.rs

@@ -119,22 +119,14 @@ where
         macro_rules! icon {
             ($name:expr, $on_press:expr) => {{
                 #[cfg(target_os = "linux")]
-                let icon = {
-                    icon::from_name($name)
-                        .apply(button::icon)
-                };
+                let icon = { icon::from_name($name).apply(button::icon) };
                 #[cfg(not(target_os = "linux"))]
                 let icon = {
-                    icon::from_svg_bytes(include_bytes!(concat!(
-                        "../../res/icons/",
-                        $name,
-                        ".svg"
-                    )))
-                    .symbolic(true)
-                    .apply(button::icon)
+                    icon::from_svg_bytes(include_bytes!(concat!("../../res/icons/", $name, ".svg")))
+                        .symbolic(true)
+                        .apply(button::icon)
                 };
-                icon.padding([0, 12])
-                    .on_press($on_press)
+                icon.padding([0, 12]).on_press($on_press)
             }};
         }
         let date = text(this.model.visible.format("%B %Y").to_string()).size(18);

src/widget/color_picker/mod.rs

@@ -6,6 +6,7 @@
 use std::borrow::Cow;
 use std::iter;
 use std::rc::Rc;
+use std::sync::LazyLock;
 use std::sync::atomic::{AtomicBool, Ordering};
 use std::time::{Duration, Instant};
 
@@ -26,7 +27,6 @@ use iced_core::{
 
 use iced_widget::slider::HandleShape;
 use iced_widget::{Row, canvas, column, horizontal_space, row, scrollable, vertical_space};
-use lazy_static::lazy_static;
 use palette::{FromColor, RgbHue};
 
 use super::divider::horizontal;
@@ -38,17 +38,17 @@ use super::{Icon, button, segmented_control, text, text_input, tooltip};
 pub use ColorPickerModel as Model;
 
 // TODO is this going to look correct enough?
-lazy_static! {
-    pub static ref HSV_RAINBOW: Vec<iced::Color> = (0u16..8)
-        .map(
-            |h| iced::Color::from(palette::Srgba::from_color(palette::Hsv::new_srgb_const(
+pub static HSV_RAINBOW: LazyLock<Vec<Color>> = LazyLock::new(|| {
+    (0u16..8)
+        .map(|h| {
+            Color::from(palette::Srgba::from_color(palette::Hsv::new_srgb_const(
                 RgbHue::new(f32::from(h) * 360.0 / 7.0),
                 1.0,
-                1.0
+                1.0,
             )))
-        )
-        .collect();
-}
+        })
+        .collect()
+});
 
 const MAX_RECENT: usize = 20;