Fix hash for DrivenNet (#48)

* fix hashing for DrivenNet

* bump ver

Author: matth2k

Cargo.toml

@@ -1,6 +1,6 @@
 [package]
 name = "safety-net"
-version = "0.2.3"
+version = "0.2.4"
 edition = "2024"
 license = "MIT OR Apache-2.0"
 

src/netlist.rs

@@ -1000,7 +1000,7 @@ where
 }
 
 /// Represent a net that is being driven by a [Instantiable]
-#[derive(Debug, Clone, PartialEq, Eq, Hash)]
+#[derive(Debug, Clone)]
 pub struct DrivenNet<I: Instantiable> {
     pos: usize,
     netref: NetRef<I>,
@@ -1125,6 +1125,27 @@ where
     }
 }
 
+impl<I> PartialEq for DrivenNet<I>
+where
+    I: Instantiable,
+{
+    fn eq(&self, other: &Self) -> bool {
+        self.netref == other.netref && self.pos == other.pos
+    }
+}
+
+impl<I> Eq for DrivenNet<I> where I: Instantiable {}
+
+impl<I> std::hash::Hash for DrivenNet<I>
+where
+    I: Instantiable,
+{
+    fn hash<H: std::hash::Hasher>(&self, state: &mut H) {
+        self.netref.hash(state);
+        self.pos.hash(state);
+    }
+}
+
 impl<I> WeakIndex<usize> for Netlist<I>
 where
     I: Instantiable,