use std oncelock

4 files changed, 4 insertions, 15 deletions

diff --git a/incria/Cargo.lock b/incria/Cargo.lock
index fa39449..32dc3f1 100644
--- a/incria/Cargo.lock
+++ b/incria/Cargo.lock
@@ -21,7 +21,6 @@ dependencies = [
 name = "incria"
 version = "0.1.0"
 dependencies = [
- "once_cell",
  "tokio",
 ]
 
@@ -42,12 +41,6 @@ dependencies = [
 ]
 
 [[package]]
-name = "once_cell"
-version = "1.17.1"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "b7e5500299e16ebb147ae15a00a942af264cf3688f47923b8fc2cd5858f23ad3"
-
-[[package]]
 name = "pin-project-lite"
 version = "0.2.9"
 source = "registry+https://github.com/rust-lang/crates.io-index"
diff --git a/incria/Cargo.toml b/incria/Cargo.toml
index 1ff3824..608c926 100644
--- a/incria/Cargo.toml
+++ b/incria/Cargo.toml
@@ -4,7 +4,6 @@ version = "0.1.0"
 edition = "2021"
 
 [dependencies]
-once_cell = "1.17.1"
 tokio = { version = "1.28.1", features = ["sync", "rt"] }
 
 [dev-dependencies]
diff --git a/incria/examples/spreadsheet.rs b/incria/examples/spreadsheet.rs
index 135ca80..5c377e3 100644
--- a/incria/examples/spreadsheet.rs
+++ b/incria/examples/spreadsheet.rs
@@ -1,11 +1,10 @@
-use std::{future::Future, pin::Pin};
+use std::{future::Future, pin::Pin, sync::OnceLock};
 
 use incria::{
     deps,
     thunk::{Thunk, ThunkMapper},
     Mapper,
 };
-use once_cell::sync::OnceCell;
 
 type Key = (usize, usize);
 type Value = usize;
@@ -29,7 +28,7 @@ impl Thunk<Key, Value> for CellThunk {
 }
 
 type CellMapping = ThunkMapper<Key, Value, CellThunk>;
-static CELL_MAPPING: OnceCell<CellMapping> = OnceCell::new();
+static CELL_MAPPING: OnceLock<CellMapping> = OnceLock::new();
 fn cell_mapping() -> &'static CellMapping {
     CELL_MAPPING.get_or_init(CellMapping::default)
 }
diff --git a/incria/src/deps.rs b/incria/src/deps.rs
index d72e684..acc39f1 100644
--- a/incria/src/deps.rs
+++ b/incria/src/deps.rs
@@ -13,11 +13,9 @@ use std::{
     collections::{HashMap, VecDeque},
     fmt::Write,
     future::Future,
-    sync::Mutex,
+    sync::{Mutex, OnceLock},
 };
 
-use once_cell::sync::OnceCell;
-
 /// Identifier of a node, unique across a program run.
 pub type NodeId = usize;
 
@@ -112,7 +110,7 @@ struct NodeInfo {
 }
 
 /// The global instance of the dependency tracker
-static DEP_TRACKER: OnceCell<DepTracker> = OnceCell::new();
+static DEP_TRACKER: OnceLock<DepTracker> = OnceLock::new();
 fn dep_tracker() -> &'static DepTracker {
     DEP_TRACKER.get_or_init(DepTracker::default)
 }