From 375b3b2d12ba04170f488ca6bec5d9aa5ede063b Mon Sep 17 00:00:00 2001
From: Artemiy Artamonov <array.clean@gmail.com>
Date: Mon, 26 Jun 2023 23:31:15 +0300
Subject: [PATCH] Deps: make blake2b optional

---
 Cargo.toml | 6 ++++--
 src/lib.rs | 1 +
 2 files changed, 5 insertions(+), 2 deletions(-)

diff --git a/Cargo.toml b/Cargo.toml
index 37cc346..0930a06 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -17,16 +17,18 @@ include = [
 # See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
 
 [features]
-default = ["std"]
+default = ["std", "blake2b"]
 std = []
 # SMT implemented in C
 smtc = []
 # A storage optimized SMT implemented in trie (https://ouvrard-pierre-alain.medium.com/sparse-merkle-tree-86e6e2fc26da)
 trie = []
+# enable blake2b hash implementation
+blake2b = ["dep:blake2b-rs"]
 
 [dependencies]
 cfg-if = "1"
-blake2b-rs = "0.2"
+blake2b-rs = { version = "0.2", optional = true }
 
 [dev-dependencies]
 proptest = "0.9"
diff --git a/src/lib.rs b/src/lib.rs
index 2b879d1..bf1ad3a 100644
--- a/src/lib.rs
+++ b/src/lib.rs
@@ -61,6 +61,7 @@
 
 #![cfg_attr(not(feature = "std"), no_std)]
 
+#[cfg(feature = "blake2b")]
 pub mod blake2b;
 #[cfg(feature = "smtc")]
 pub mod ckb_smt;