Remove direct dependency on once_cell

With MSRV 1.70, std now contains the necessary parts.

Cargo.lock

@@ -53,7 +53,6 @@ dependencies = [
  "log",
  "notify",
  "objc",
- "once_cell",
  "parking_lot",
  "png",
  "raw-window-handle",

alacritty/Cargo.toml

@@ -32,7 +32,6 @@ home = "0.5.5"
 libc = "0.2"
 log = { version = "0.4", features = ["std", "serde"] }
 notify = "6.1.1"
-once_cell = "1.12"
 parking_lot = "0.12.0"
 raw-window-handle = "0.5"
 serde = { version = "1", features = ["derive"] }

alacritty/src/logging.rs

@@ -8,12 +8,11 @@ use std::fs::{File, OpenOptions};
 use std::io::{self, LineWriter, Stdout, Write};
 use std::path::PathBuf;
 use std::sync::atomic::{AtomicBool, Ordering};
-use std::sync::{Arc, Mutex};
+use std::sync::{Arc, Mutex, OnceLock};
 use std::time::Instant;
 use std::{env, process};
 
 use log::{self, Level, LevelFilter};
-use once_cell::sync::Lazy;
 use winit::event_loop::EventLoopProxy;
 
 use crate::cli::Options;
@@ -35,10 +34,14 @@ pub const LOG_TARGET_CONFIG: &str = "alacritty_config_derive";
 const ALACRITTY_EXTRA_LOG_TARGETS_ENV: &str = "ALACRITTY_EXTRA_LOG_TARGETS";
 
 /// User configurable extra log targets to include.
-static EXTRA_LOG_TARGETS: Lazy<Vec<String>> = Lazy::new(|| {
+fn extra_log_targets() -> &'static [String] {
+    static EXTRA_LOG_TARGETS: OnceLock<Vec<String>> = OnceLock::new();
+
+    EXTRA_LOG_TARGETS.get_or_init(|| {
         env::var(ALACRITTY_EXTRA_LOG_TARGETS_ENV)
             .map_or(Vec::new(), |targets| targets.split(';').map(ToString::to_string).collect())
-});
+    })
+}
 
 /// List of targets which will be logged by Alacritty.
 const ALLOWED_TARGETS: &[&str] = &[
@@ -181,7 +184,7 @@ fn create_log_message(record: &log::Record<'_>, target: &str, start: Instant) ->
 fn is_allowed_target(level: Level, target: &str) -> bool {
     match (level, log::max_level()) {
         (Level::Error, LevelFilter::Trace) | (Level::Warn, LevelFilter::Trace) => true,
-        _ => ALLOWED_TARGETS.contains(&target) || EXTRA_LOG_TARGETS.iter().any(|t| t == target),
+        _ => ALLOWED_TARGETS.contains(&target) || extra_log_targets().iter().any(|t| t == target),
     }
 }
 

alacritty/src/renderer/mod.rs

@@ -2,6 +2,7 @@ use std::borrow::Cow;
 use std::collections::HashSet;
 use std::ffi::{CStr, CString};
 use std::sync::atomic::{AtomicBool, Ordering};
+use std::sync::OnceLock;
 use std::{fmt, ptr};
 
 use ahash::RandomState;
@@ -9,7 +10,6 @@ use crossfont::Metrics;
 use glutin::context::{ContextApi, GlContext, PossiblyCurrentContext};
 use glutin::display::{GetGlDisplay, GlDisplay};
 use log::{debug, error, info, warn, LevelFilter};
-use once_cell::sync::OnceCell;
 use unicode_width::UnicodeWidthChar;
 
 use alacritty_terminal::index::Point;
@@ -318,7 +318,7 @@ impl GlExtensions {
     ///
     /// This function will lazily load OpenGL extensions.
     fn contains(extension: &str) -> bool {
-        static OPENGL_EXTENSIONS: OnceCell<HashSet<&'static str, RandomState>> = OnceCell::new();
+        static OPENGL_EXTENSIONS: OnceLock<HashSet<&'static str, RandomState>> = OnceLock::new();
 
         OPENGL_EXTENSIONS.get_or_init(Self::load_extensions).contains(extension)
     }