Drop once_cell::sync::Lazy in favor of std::sync::LazyLock

This almost completely drops the `once_cell` crate, but `OnceCell` is
still in use. While the `OnceCell` type is available in the standard
library, the `get_or_try_init` method is not yet stabilized.

This bumps the MSRV up to 1.80, which is the first version to stabilize
`std::sync::LazyLock`.

Author: spenserblack

Cargo.lock

@@ -190,7 +190,6 @@ terminal_size = "0.3.0"
 # Avoid pre-compiled binaries, see https://github.com/serde-rs/serde/issues/2538 and https://github.com/serde-rs/serde/pull/2590
 serde_derive = ">=1.0.185"
 
-once_cell = "1.18.0"
 document-features = { version = "0.2.0", optional = true }
 
 [profile.dev.package]

Cargo.toml

@@ -1 +1 @@
-msrv = "1.74.0"
+msrv = "1.80.0"

clippy.toml

@@ -9,7 +9,7 @@ edition = "2021"
 keywords = ["git-config", "git", "config", "gitoxide"]
 categories = ["config", "parser-implementations"]
 include = ["src/**/*", "LICENSE-*", "README.md"]
-rust-version = "1.65"
+rust-version = "1.80"
 autotests = false
 
 [features]
@@ -31,7 +31,6 @@ unicode-bom.workspace = true
 bstr = { version = "1.3.0", default-features = false, features = ["std"] }
 serde = { version = "1.0.114", optional = true, default-features = false, features = ["derive"] }
 smallvec = "1.9.0"
-once_cell = "1.14.0"
 
 document-features = { version = "0.2.0", optional = true }
 

gix-config/Cargo.toml

@@ -36,7 +36,6 @@ document-features = { version = "0.2.1", optional = true }
 [dev-dependencies]
 gix-testtools = { path = "../tests/tools" }
 gix-sec = { path = "../gix-sec" }
-once_cell = "1.19.0"
 
 [package.metadata.docs.rs]
 all-features = true

gix-credentials/Cargo.toml

@@ -1,7 +1,7 @@
 use gix_credentials::{helper, program::Kind, Program};
 
-static GIT: once_cell::sync::Lazy<&'static str> =
-    once_cell::sync::Lazy::new(|| gix_path::env::exe_invocation().to_str().expect("not illformed"));
+static GIT: std::sync::LazyLock<&'static str> =
+    std::sync::LazyLock::new(|| gix_path::env::exe_invocation().to_str().expect("not illformed"));
 
 #[cfg(windows)]
 const SH: &str = "sh";

gix-credentials/tests/program/from_custom_definition.rs

@@ -27,7 +27,6 @@ document-features = { version = "0.2.0", optional = true }
 
 [dev-dependencies]
 gix-testtools = { path = "../tests/tools" }
-once_cell = "1.12.0"
 gix-hash = { path = "../gix-hash" }
 
 [package.metadata.docs.rs]

gix-date/Cargo.toml

@@ -5,15 +5,15 @@ use gix_date::{
     SecondsSinceUnixEpoch,
 };
 use gix_testtools::Result;
-use once_cell::sync::Lazy;
+use std::sync::LazyLock;
 
 struct Sample {
     format_name: Option<String>,
     exit_code: usize,
     seconds: SecondsSinceUnixEpoch,
 }
 
-static BASELINE: Lazy<HashMap<String, Sample>> = Lazy::new(|| {
+static BASELINE: LazyLock<HashMap<String, Sample>> = LazyLock::new(|| {
     (|| -> Result<_> {
         let base = gix_testtools::scripted_fixture_read_only("generate_git_date_baseline.sh")?;
         let mut map = HashMap::new();

gix-date/tests/time/baseline.rs

@@ -2,7 +2,7 @@ use gix_fsck::Connectivity;
 use gix_hash::ObjectId;
 use gix_hashtable::HashMap;
 use gix_object::Kind;
-use gix_testtools::once_cell::sync::Lazy;
+use std::sync::LazyLock;
 
 use crate::hex_to_id;
 
@@ -40,7 +40,7 @@ fn hex_to_objects<'a>(hex_ids: impl IntoIterator<Item = &'a str>, kind: Kind) ->
 
 // Get a `&Vec<ObjectID` for each commit in the test fixture repository
 fn all_commits() -> &'static [ObjectId] {
-    static ALL_COMMITS: Lazy<Vec<ObjectId>> = Lazy::new(|| {
+    static ALL_COMMITS: LazyLock<Vec<ObjectId>> = LazyLock::new(|| {
         hex_to_ids([
             "ebed23648b19484cb1f340c4ee04dda08479188a",
             "8ff6d0f8891c3cb22827be142cc64606121d47b3",

gix-fsck/tests/connectivity/mod.rs

@@ -7,7 +7,7 @@ description = "A crate of the gitoxide project dealing paths and their conversio
 authors = ["Sebastian Thiel <sebastian.thiel@icloud.com>"]
 edition = "2021"
 include = ["src/**/*", "LICENSE-*"]
-rust-version = "1.65"
+rust-version = "1.80"
 
 [lib]
 doctest = false
@@ -16,7 +16,6 @@ doctest = false
 gix-trace = { version = "^0.1.8", path = "../gix-trace" }
 bstr = { version = "1.3.0", default-features = false, features = ["std"] }
 thiserror = "1.0.26"
-once_cell = "1.17.1"
 
 [target.'cfg(not(target_family = "wasm"))'.dependencies]
 home = "0.5.5"