fix(natu): resolve inherited attributes

src/natu/parser.rs

@@ -51,12 +51,7 @@ fn convert_expr(expr: rnix::ast::Expr) -> ast::Expr {
                 let_in.body().expect("let expressions have bodies"),
             )),
         },
-        rnix::ast::Expr::AttrSet(attr_set) => ast::Expr::AttrSet(
+        rnix::ast::Expr::AttrSet(attr_set) => ast::Expr::AttrSet(convert_attr_set(attr_set)),
-            attr_set
-                .attrpath_values()
-                .filter_map(convert_binding_ast)
-                .collect(),
-        ),
         rnix::ast::Expr::Lambda(lambda) => ast::Expr::Lambda {
             parameters: lambda_parameters(&lambda),
             body: Box::new(convert_expr(lambda.body().expect("lambdas have bodies"))),
@@ -77,10 +72,6 @@ fn convert_binding_ast(binding: rnix::ast::AttrpathValue) -> Option<ast::Binding
         return None;
     };
 
-    if attrs.next().is_some() {
-        return None;
-    }
-
     Some(ast::Binding {
         range: binding.syntax().text_range().into(),
         key: key.into(),
@@ -88,6 +79,40 @@ fn convert_binding_ast(binding: rnix::ast::AttrpathValue) -> Option<ast::Binding
     })
 }
 
+fn convert_attr_set(attr_set: rnix::ast::AttrSet) -> Vec<ast::Binding> {
+    attr_set
+        .entries()
+        .flat_map(|entry| match entry {
+            rnix::ast::Entry::AttrpathValue(binding) => {
+                convert_binding_ast(binding).into_iter().collect()
+            }
+            rnix::ast::Entry::Inherit(inherit) => convert_inherit(inherit),
+        })
+        .collect()
+}
+
+fn convert_inherit(inherit: rnix::ast::Inherit) -> Vec<ast::Binding> {
+    let value = inherit
+        .from()
+        .and_then(|from| from.expr())
+        .map(convert_expr);
+
+    inherit
+        .attrs()
+        .filter_map(|attr| match attr {
+            Attr::Ident(ident) => Some(ident),
+            _ => None,
+        })
+        .map(|key| ast::Binding {
+            range: key.syntax().text_range().into(),
+            value: value
+                .clone()
+                .unwrap_or_else(|| ast::Expr::Ident(key.clone().into())),
+            key: key.into(),
+        })
+        .collect()
+}
+
 fn lambda_parameters(lambda: &rnix::ast::Lambda) -> Vec<ast::Ident> {
     match lambda.param() {
         Some(rnix::ast::Param::IdentParam(parameter)) => {