Remove once_cell dependency & use LazyLock

Author: cakebaker

Cargo.lock

@@ -314,7 +314,6 @@ num-bigint = "0.4.4"
 num-prime = "0.4.4"
 num-traits = "0.2.19"
 number_prefix = "0.4"
-once_cell = "1.19.0"
 onig = { version = "~6.4", default-features = false }
 parse_datetime = "0.8.0"
 phf = "0.11.2"
@@ -366,7 +365,6 @@ uu_base32 = { version = "0.0.29", path = "src/uu/base32" }
 
 [dependencies]
 clap = { workspace = true }
-once_cell = { workspace = true }
 uucore = { workspace = true }
 clap_complete = { workspace = true }
 clap_mangen = { workspace = true }

Cargo.toml

@@ -24,7 +24,6 @@ glob = { workspace = true }
 hostname = { workspace = true }
 lscolors = { workspace = true }
 number_prefix = { workspace = true }
-once_cell = { workspace = true }
 selinux = { workspace = true, optional = true }
 terminal_size = { workspace = true }
 uucore = { workspace = true, features = [

src/uu/ls/Cargo.toml

@@ -3057,7 +3057,7 @@ fn get_inode(metadata: &Metadata) -> String {
 // Currently getpwuid is `linux` target only. If it's broken out into
 // a posix-compliant attribute this can be updated...
 #[cfg(unix)]
-use once_cell::sync::Lazy;
+use std::sync::LazyLock;
 #[cfg(unix)]
 use std::sync::Mutex;
 #[cfg(unix)]
@@ -3066,7 +3066,8 @@ use uucore::fs::FileInformation;
 
 #[cfg(unix)]
 fn cached_uid2usr(uid: u32) -> String {
-    static UID_CACHE: Lazy<Mutex<HashMap<u32, String>>> = Lazy::new(|| Mutex::new(HashMap::new()));
+    static UID_CACHE: LazyLock<Mutex<HashMap<u32, String>>> =
+        LazyLock::new(|| Mutex::new(HashMap::new()));
 
     let mut uid_cache = UID_CACHE.lock().unwrap();
     uid_cache
@@ -3086,7 +3087,8 @@ fn display_uname(metadata: &Metadata, config: &Config) -> String {
 
 #[cfg(all(unix, not(target_os = "redox")))]
 fn cached_gid2grp(gid: u32) -> String {
-    static GID_CACHE: Lazy<Mutex<HashMap<u32, String>>> = Lazy::new(|| Mutex::new(HashMap::new()));
+    static GID_CACHE: LazyLock<Mutex<HashMap<u32, String>>> =
+        LazyLock::new(|| Mutex::new(HashMap::new()));
 
     let mut gid_cache = GID_CACHE.lock().unwrap();
     gid_cache

src/uu/ls/src/ls.rs

@@ -45,7 +45,6 @@ data-encoding = { version = "2.6", optional = true }
 data-encoding-macro = { version = "0.1.15", optional = true }
 z85 = { version = "3.0.5", optional = true }
 libc = { workspace = true, optional = true }
-once_cell = { workspace = true }
 os_display = "0.1.3"
 
 digest = { workspace = true, optional = true }
@@ -68,7 +67,6 @@ xattr = { workspace = true, optional = true }
 
 [dev-dependencies]
 clap = { workspace = true }
-once_cell = { workspace = true }
 tempfile = { workspace = true }
 
 [target.'cfg(target_os = "windows")'.dependencies]

src/uucore/Cargo.toml

@@ -485,16 +485,15 @@ mod tests {
     use super::*;
     // Required to instantiate mutex in shared context
     use clap::Command;
-    use once_cell::sync::Lazy;
-    use std::sync::Mutex;
+    use std::sync::{LazyLock, Mutex};
 
     // The mutex is required here as by default all tests are run as separate
     // threads under the same parent process. As environment variables are
     // specific to processes (and thus shared among threads), data races *will*
     // occur if no precautions are taken. Thus we have all tests that rely on
     // environment variables lock this empty mutex to ensure they don't access
     // it concurrently.
-    static TEST_MUTEX: Lazy<Mutex<()>> = Lazy::new(|| Mutex::new(()));
+    static TEST_MUTEX: LazyLock<Mutex<()>> = LazyLock::new(|| Mutex::new(()));
 
     // Environment variable for "VERSION_CONTROL"
     static ENV_VERSION_CONTROL: &str = "VERSION_CONTROL";

src/uucore/src/lib/features/backup_control.rs

@@ -43,9 +43,7 @@ use std::io::Error as IOError;
 use std::io::ErrorKind;
 use std::io::Result as IOResult;
 use std::ptr;
-use std::sync::Mutex;
-
-use once_cell::sync::Lazy;
+use std::sync::{LazyLock, Mutex};
 
 extern "C" {
     /// From: `<https://man7.org/linux/man-pages/man3/getgrouplist.3.html>`
@@ -276,7 +274,7 @@ pub trait Locate<K> {
 // to, so we must copy all the data we want before releasing the lock.
 // (Technically we must also ensure that the raw functions aren't being called
 // anywhere else in the program.)
-static PW_LOCK: Lazy<Mutex<()>> = Lazy::new(|| Mutex::new(()));
+static PW_LOCK: LazyLock<Mutex<()>> = LazyLock::new(|| Mutex::new(()));
 
 macro_rules! f {
     ($fnam:ident, $fid:ident, $t:ident, $st:ident) => {

src/uucore/src/lib/features/entries.rs

@@ -304,7 +304,7 @@ impl Utmpx {
 // I believe the only technical memory unsafety that could happen is a data
 // race while copying the data out of the pointer returned by getutxent(), but
 // ordinary race conditions are also very much possible.
-static LOCK: Lazy<Mutex<()>> = Lazy::new(|| Mutex::new(()));
+static LOCK: LazyLock<Mutex<()>> = LazyLock::new(|| Mutex::new(()));
 
 /// Iterator of login records
 pub struct UtmpxIter {

src/uucore/src/lib/features/utmpx.rs

@@ -115,16 +115,13 @@ use nix::sys::signal::{
     sigaction, SaFlags, SigAction, SigHandler::SigDfl, SigSet, Signal::SIGBUS, Signal::SIGSEGV,
 };
 use std::borrow::Cow;
-use std::ffi::OsStr;
-use std::ffi::OsString;
+use std::ffi::{OsStr, OsString};
 use std::io::{BufRead, BufReader};
 use std::iter;
 #[cfg(unix)]
 use std::os::unix::ffi::{OsStrExt, OsStringExt};
 use std::str;
-use std::sync::atomic::Ordering;
-
-use once_cell::sync::Lazy;
+use std::sync::{atomic::Ordering, LazyLock};
 
 /// Disables the custom signal handlers installed by Rust for stack-overflow handling. With those custom signal handlers processes ignore the first SIGBUS and SIGSEGV signal they receive.
 /// See <https://github.com/rust-lang/rust/blob/8ac1525e091d3db28e67adcbbd6db1e1deaa37fb/src/libstd/sys/unix/stack_overflow.rs#L71-L92> for details.
@@ -194,9 +191,9 @@ pub fn set_utility_is_second_arg() {
 
 // args_os() can be expensive to call, it copies all of argv before iterating.
 // So if we want only the first arg or so it's overkill. We cache it.
-static ARGV: Lazy<Vec<OsString>> = Lazy::new(|| wild::args_os().collect());
+static ARGV: LazyLock<Vec<OsString>> = LazyLock::new(|| wild::args_os().collect());
 
-static UTIL_NAME: Lazy<String> = Lazy::new(|| {
+static UTIL_NAME: LazyLock<String> = LazyLock::new(|| {
     let base_index = usize::from(get_utility_is_second_arg());
     let is_man = usize::from(ARGV[base_index].eq("manpage"));
     let argv_index = base_index + is_man;
@@ -209,7 +206,7 @@ pub fn util_name() -> &'static str {
     &UTIL_NAME
 }
 
-static EXECUTION_PHRASE: Lazy<String> = Lazy::new(|| {
+static EXECUTION_PHRASE: LazyLock<String> = LazyLock::new(|| {
     if get_utility_is_second_arg() {
         ARGV.iter()
             .take(2)