From da4c2acf8944777e634eb33637d985bda1de278f Mon Sep 17 00:00:00 2001
From: Christian Beilschmidt <beilschmidt@mathematik.uni-marburg.de>
Date: Tue, 7 Sep 2021 11:41:22 +0200
Subject: [PATCH] changed lazy_static to once_cell

---
 Cargo.toml    | 2 +-
 src/config.rs | 9 ++++-----
 2 files changed, 5 insertions(+), 6 deletions(-)

diff --git a/Cargo.toml b/Cargo.toml
index 75af014f..2520d9ea 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -24,7 +24,7 @@ gdal-sys = { path = "gdal-sys", version = "^0.5"}
 ndarray = {version = "0.15", optional = true }
 chrono = { version = "0.4", optional = true }
 bitflags = "1.2"
-lazy_static = "1.3"
+once_cell = "1.8"
 
 [build-dependencies]
 gdal-sys = { path = "gdal-sys", version= "^0.5"}
diff --git a/src/config.rs b/src/config.rs
index b0107707..18e84ee3 100644
--- a/src/config.rs
+++ b/src/config.rs
@@ -28,7 +28,7 @@ use libc::{c_char, c_void};
 
 use crate::errors::Result;
 use crate::utils::_string;
-use lazy_static::lazy_static;
+use once_cell::sync::Lazy;
 use std::ffi::CString;
 use std::sync::Mutex;
 
@@ -127,10 +127,9 @@ type CallbackType = dyn FnMut(CplErr, i32, &str) + 'static;
 static mut ERROR_CALLBACK: Option<Box<CallbackType>> = None;
 
 type CallbackTypeThreadSafe = dyn FnMut(CplErr, i32, &str) + 'static + Send;
-lazy_static! {
-    static ref ERROR_CALLBACK_THREAD_SAFE: Mutex<Option<Box<CallbackTypeThreadSafe>>> =
-        Mutex::new(None);
-}
+
+static ERROR_CALLBACK_THREAD_SAFE: Lazy<Mutex<Option<Box<CallbackTypeThreadSafe>>>> =
+    Lazy::new(Default::default);
 
 /// Set a custom error handler for GDAL.
 /// Could be overwritten by setting a thread-local error handler.