rust-lang-ja
diff --git a/‎Cargo.lock
+73 b/‎Cargo.lock
+73
diff --git a/‎Cargo.toml
+3 b/‎Cargo.toml
+3
@@ -106,6 +106,9 @@ derive_more = "=0.99.1"
 # メソッド`new`を生やすderive macro
 derive-new = "=0.5.8"
 
+# builder pattern用のderive macro
+derive_builder = "=0.9.0"
+
 # 即席enum `Either<L, R>`
 either = "1.5.3"