3 files changed, 25 insertions, 1 deletions
diff --git a/Cargo.toml b/Cargo.toml
index 6907ca9..7c1c288 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -1,7 +1,9 @@
 [workspace]
+resolver = "2"
 members = [
-	"model",
 	"ai",
+	"model",
+	"pdn",
 	"ui"
 ]
 
diff --git a/pdn/Cargo.toml b/pdn/Cargo.toml
new file mode 100644
index 0000000..1ed6d4b
--- /dev/null
+++ b/pdn/Cargo.toml
@@ -0,0 +1,8 @@
+[package]
+name = "pdn"
+version = "0.1.0"
+edition = "2021"
+
+# See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
+
+[dependencies]
diff --git a/pdn/src/lib.rs b/pdn/src/lib.rs
new file mode 100644
index 0000000..06d268d
--- /dev/null
+++ b/pdn/src/lib.rs
@@ -0,0 +1,14 @@
+pub fn add(left: usize, right: usize) -> usize {
+	left + right
+}
+
+#[cfg(test)]
+mod tests {
+	use super::*;
+
+	#[test]
+	fn it_works() {
+		let result = add(2, 2);
+		assert_eq!(result, 4);
+	}
+}