1 files changed, 2 insertions, 5 deletions
diff --git a/src/nix/command.hh b/src/nix/command.hh
index 5d0c0c82c..a52fbb9ba 100644
--- a/src/nix/command.hh
+++ b/src/nix/command.hh
@@ -66,11 +66,6 @@ struct Installable
 
     Buildable toBuildable();
 
-    virtual std::optional<std::string> installableToFlakeUri()
-    {
-        return std::nullopt;
-    }
-
     virtual Value * toValue(EvalState & state)
     {
         throw Error("argument '%s' cannot be evaluated", what());
@@ -81,6 +76,8 @@ struct SourceExprCommand : virtual Args, StoreCommand, MixEvalArgs
 {
     std::optional<Path> file;
 
+    bool updateLockFile = true;
+
     SourceExprCommand();
 
     ref<EvalState> getEvalState();