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-rw-r--r--src/libexpr/eval.cc2
1 files changed, 0 insertions, 2 deletions
diff --git a/src/libexpr/eval.cc b/src/libexpr/eval.cc
index 3aa35b32760a..c58b95126833 100644
--- a/src/libexpr/eval.cc
+++ b/src/libexpr/eval.cc
@@ -148,8 +148,6 @@ EvalState::EvalState()
     nrAttrsets = nrOpUpdates = nrOpUpdateValuesCopied = 0;
     deepestStack = (char *) -1;
 
-    allowUnsafeEquality = getEnv("NIX_NO_UNSAFE_EQ", "") == "";
-
 #if HAVE_BOEHMGC
     static bool gcInitialised = true;
     if (gcInitialised) {