chore: Remove explicit usages of once_cell in favor of std (#22407)

Closes #ISSUE

Release Notes:

- N/A

Cargo.toml

@@ -408,7 +408,6 @@ nanoid = "0.4"
 nbformat = { version = "0.9.0" }
 nix = "0.29"
 num-format = "0.4.4"
-once_cell = "1.19.0"
 ordered-float = "2.1.1"
 palette = { version = "0.7.5", default-features = false, features = ["std"] }
 parking_lot = "0.12.1"

crates/cli/Cargo.toml

@@ -25,7 +25,6 @@ anyhow.workspace = true
 clap.workspace = true
 collections.workspace = true
 ipc-channel = "0.19"
-once_cell.workspace = true
 parking_lot.workspace = true
 paths.workspace = true
 release_channel.workspace = true

crates/cli/src/main.rs

@@ -277,19 +277,19 @@ mod linux {
         os::unix::net::{SocketAddr, UnixDatagram},
         path::{Path, PathBuf},
         process::{self, ExitStatus},
+        sync::LazyLock,
         thread,
         time::Duration,
     };
 
     use anyhow::anyhow;
     use cli::FORCE_CLI_MODE_ENV_VAR_NAME;
     use fork::Fork;
-    use once_cell::sync::Lazy;
 
     use crate::{Detect, InstalledApp};
 
-    static RELEASE_CHANNEL: Lazy<String> =
-        Lazy::new(|| include_str!("../../zed/RELEASE_CHANNEL").trim().to_string());
+    static RELEASE_CHANNEL: LazyLock<String> =
+        LazyLock::new(|| include_str!("../../zed/RELEASE_CHANNEL").trim().to_string());
 
     struct App(PathBuf);
 

crates/client/Cargo.toml

@@ -27,7 +27,6 @@ futures.workspace = true
 gpui.workspace = true
 http_client.workspace = true
 log.workspace = true
-once_cell.workspace = true
 paths.workspace = true
 parking_lot.workspace = true
 postage.workspace = true

crates/client/src/telemetry.rs

@@ -8,15 +8,19 @@ use futures::channel::mpsc;
 use futures::{Future, StreamExt};
 use gpui::{AppContext, BackgroundExecutor, Task};
 use http_client::{self, AsyncBody, HttpClient, HttpClientWithUrl, Method, Request};
-use once_cell::sync::Lazy;
 use parking_lot::Mutex;
 use release_channel::ReleaseChannel;
 use settings::{Settings, SettingsStore};
 use sha2::{Digest, Sha256};
 use std::fs::File;
 use std::io::Write;
 use std::time::Instant;
-use std::{env, mem, path::PathBuf, sync::Arc, time::Duration};
+use std::{
+    env, mem,
+    path::PathBuf,
+    sync::{Arc, LazyLock},
+    time::Duration,
+};
 use telemetry_events::{
     AppEvent, AssistantEvent, CallEvent, EditEvent, Event, EventRequestBody, EventWrapper,
     InlineCompletionEvent,
@@ -84,7 +88,7 @@ const FLUSH_INTERVAL: Duration = Duration::from_secs(1);
 
 #[cfg(not(debug_assertions))]
 const FLUSH_INTERVAL: Duration = Duration::from_secs(60 * 5);
-static ZED_CLIENT_CHECKSUM_SEED: Lazy<Option<Vec<u8>>> = Lazy::new(|| {
+static ZED_CLIENT_CHECKSUM_SEED: LazyLock<Option<Vec<u8>>> = LazyLock::new(|| {
     option_env!("ZED_CLIENT_CHECKSUM_SEED")
         .map(|s| s.as_bytes().into())
         .or_else(|| {

crates/release_channel/Cargo.toml

@@ -10,4 +10,3 @@ workspace = true
 
 [dependencies]
 gpui.workspace = true
-once_cell.workspace = true

crates/release_channel/src/lib.rs

@@ -2,24 +2,23 @@
 
 #![deny(missing_docs)]
 
-use std::{env, str::FromStr};
+use std::{env, str::FromStr, sync::LazyLock};
 
 use gpui::{AppContext, Global, SemanticVersion};
-use once_cell::sync::Lazy;
 
 /// stable | dev | nightly | preview
-pub static RELEASE_CHANNEL_NAME: Lazy<String> = if cfg!(debug_assertions) {
-    Lazy::new(|| {
+pub static RELEASE_CHANNEL_NAME: LazyLock<String> = LazyLock::new(|| {
+    if cfg!(debug_assertions) {
         env::var("ZED_RELEASE_CHANNEL")
             .unwrap_or_else(|_| include_str!("../../zed/RELEASE_CHANNEL").trim().to_string())
-    })
-} else {
-    Lazy::new(|| include_str!("../../zed/RELEASE_CHANNEL").trim().to_string())
-};
+    } else {
+        include_str!("../../zed/RELEASE_CHANNEL").trim().to_string()
+    }
+});
 
 #[doc(hidden)]
-pub static RELEASE_CHANNEL: Lazy<ReleaseChannel> =
-    Lazy::new(|| match ReleaseChannel::from_str(&RELEASE_CHANNEL_NAME) {
+pub static RELEASE_CHANNEL: LazyLock<ReleaseChannel> =
+    LazyLock::new(|| match ReleaseChannel::from_str(&RELEASE_CHANNEL_NAME) {
         Ok(channel) => channel,
         _ => panic!("invalid release channel {}", *RELEASE_CHANNEL_NAME),
     });