1 files changed, 5 insertions, 6 deletions
diff --git a/src/libutil/json.hh b/src/libutil/json.hh
index 83213ca66..3790b1a2e 100644
--- a/src/libutil/json.hh
+++ b/src/libutil/json.hh
@@ -6,7 +6,6 @@
 
 namespace nix {
 
-void toJSON(std::ostream & str, const char * start, const char * end);
 void toJSON(std::ostream & str, const char * s);
 
 template<typename T>
@@ -107,7 +106,7 @@ private:
         open();
     }
 
-    void attr(const std::string & s);
+    void attr(std::string_view s);
 
 public:
 
@@ -128,18 +127,18 @@ public:
     ~JSONObject();
 
     template<typename T>
-    JSONObject & attr(const std::string & name, const T & v)
+    JSONObject & attr(std::string_view name, const T & v)
     {
         attr(name);
         toJSON(state->str, v);
         return *this;
     }
 
-    JSONList list(const std::string & name);
+    JSONList list(std::string_view name);
 
-    JSONObject object(const std::string & name);
+    JSONObject object(std::string_view name);
 
-    JSONPlaceholder placeholder(const std::string & name);
+    JSONPlaceholder placeholder(std::string_view name);
 };
 
 class JSONPlaceholder : JSONWriter