fix(nargo): Make dependencies section optional in TOML

crates/nargo_cli/src/manifest.rs

@@ -15,19 +15,21 @@ use crate::{errors::ManifestError, git::clone_git_repo};
 #[derive(Debug, Deserialize, Clone)]
 struct PackageConfig {
     package: PackageMetadata,
-    dependencies: BTreeMap<String, DependencyConfig>,
+    dependencies: Option<BTreeMap<String, DependencyConfig>>,
 }
 
 impl PackageConfig {
     fn resolve_to_package(&self, root_dir: &Path) -> Result<Package, ManifestError> {
         let name = self.package.name.parse().map_err(|_| ManifestError::InvalidPackageName)?;
 
         let mut dependencies: BTreeMap<CrateName, Dependency> = BTreeMap::new();
-        for (name, dep_config) in self.dependencies.iter() {
-            let name = name.parse().map_err(|_| ManifestError::InvalidPackageName)?;
-            let resolved_dep = dep_config.resolve_to_dependency(root_dir)?;
+        if let Some(dep_config) = &self.dependencies {
+            for (name, dep_config) in dep_config.iter() {
+                let name = name.parse().map_err(|_| ManifestError::InvalidPackageName)?;
+                let resolved_dep = dep_config.resolve_to_dependency(root_dir)?;
 
-            dependencies.insert(name, resolved_dep);
+                dependencies.insert(name, resolved_dep);
+            }
         }
 
         let (entry_path, crate_type) = crate::lib_or_bin(root_dir)?;
@@ -260,6 +262,19 @@ fn parse_standard_toml() {
     assert!(Config::try_from(src).is_ok());
 }
 
+#[test]
+fn parse_package_toml_no_deps() {
+    let src = r#"
+        [package]
+        name = "test"
+        authors = ["kev", "foo"]
+        compiler_version = "0.1"
+    "#;
+
+    assert!(Config::try_from(String::from(src)).is_ok());
+    assert!(Config::try_from(src).is_ok());
+}
+
 #[test]
 fn parse_workspace_toml() {
     let src = r#"