1 files changed, 13 insertions, 1 deletions
diff --git a/src/libexpr/eval-cache.hh b/src/libexpr/eval-cache.hh
index 30261fd3a..674bb03c1 100644
--- a/src/libexpr/eval-cache.hh
+++ b/src/libexpr/eval-cache.hh
@@ -50,7 +50,17 @@ struct misc_t {};
 struct failed_t {};
 typedef uint64_t AttrId;
 typedef std::pair<AttrId, Symbol> AttrKey;
-typedef std::variant<std::vector<Symbol>, std::string, placeholder_t, missing_t, misc_t, failed_t, bool> AttrValue;
+typedef std::pair<std::string, std::vector<std::pair<Path, std::string>>> string_t;
+
+typedef std::variant<
+    std::vector<Symbol>,
+    string_t,
+    placeholder_t,
+    missing_t,
+    misc_t,
+    failed_t,
+    bool
+    > AttrValue;
 
 class AttrCursor : public std::enable_shared_from_this<AttrCursor>
 {
@@ -94,6 +104,8 @@ public:
 
     std::string getString();
 
+    string_t getStringWithContext();
+
     bool getBool();
 
     std::vector<Symbol> getAttrs();