1 files changed, 1 insertions, 9 deletions
diff --git a/src/libexpr/primops.cc b/src/libexpr/primops.cc
index 7c3e5a4da..021204f08 100644
--- a/src/libexpr/primops.cc
+++ b/src/libexpr/primops.cc
@@ -469,7 +469,7 @@ static void prim_tryEval(EvalState & state, const Pos & pos, Value * * args, Val
 static void prim_getEnv(EvalState & state, const Pos & pos, Value * * args, Value & v)
 {
     string name = state.forceStringNoCtx(*args[0], pos);
-    mkString(v, evalSettings.restrictEval || evalSettings.pureEval ? "" : getEnv(name));
+    mkString(v, evalSettings.restrictEval || evalSettings.pureEval ? "" : getEnv(name).value_or(""));
 }
 
 
@@ -506,13 +506,6 @@ static void prim_trace(EvalState & state, const Pos & pos, Value * * args, Value
 }
 
 
-void prim_valueSize(EvalState & state, const Pos & pos, Value * * args, Value & v)
-{
-    /* We're not forcing the argument on purpose. */
-    mkInt(v, valueSize(*args[0]));
-}
-
-
 /*************************************************************
  * Derivations
  *************************************************************/
@@ -2206,7 +2199,6 @@ void EvalState::createBaseEnv()
 
     // Debugging
     addPrimOp("__trace", 2, prim_trace);
-    addPrimOp("__valueSize", 1, prim_valueSize);
 
     // Paths
     addPrimOp("__toPath", 1, prim_toPath);