Add a test crate

test-crate/Cargo.toml

@@ -0,0 +1,8 @@
+[package]
+name = "test-crate"
+version = "0.1.0"
+edition = "2021"
+
+# See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
+
+[dependencies]

test-crate/flake.lock

@@ -0,0 +1,25 @@
+{
+  "nodes": {
+    "nixpkgs": {
+      "locked": {
+        "lastModified": 1683777345,
+        "narHash": "sha256-V2p/A4RpEGqEZussOnHYMU6XglxBJGCODdzoyvcwig8=",
+        "owner": "NixOS",
+        "repo": "nixpkgs",
+        "rev": "635a306fc8ede2e34cb3dd0d6d0a5d49362150ed",
+        "type": "github"
+      },
+      "original": {
+        "id": "nixpkgs",
+        "type": "indirect"
+      }
+    },
+    "root": {
+      "inputs": {
+        "nixpkgs": "nixpkgs"
+      }
+    }
+  },
+  "root": "root",
+  "version": 7
+}

test-crate/flake.nix

@@ -0,0 +1,10 @@
+{
+  inputs = { rust = { url = ./..; }; };
+  description = "Simple Test Package";
+
+  outputs = { self, nixpkgs, rust }:
+    rust.single {
+      name = "test-crate";
+      src = ./.;
+    };
+}

test-crate/src/main.rs

@@ -0,0 +1,3 @@
+fn main() {
+    println!("Hello, world!");
+}