From 7f3314a68cf250163b2a61691100739536a6bb99 Mon Sep 17 00:00:00 2001
From: John Ericson <John.Ericson@Obsidian.Systems>
Date: Wed, 3 Sep 2025 17:27:07 -0400
Subject: [PATCH] `DerivationBuilder::initialOutputs` make `const`

At one point I remember it did mutatate `initialOutputs`, but not
anymore!
---
 src/libstore/include/nix/store/build/derivation-builder.hh | 5 +----
 1 file changed, 1 insertion(+), 4 deletions(-)

diff --git a/src/libstore/include/nix/store/build/derivation-builder.hh b/src/libstore/include/nix/store/build/derivation-builder.hh
index 45fbba3f5..deb4612b4 100644
--- a/src/libstore/include/nix/store/build/derivation-builder.hh
+++ b/src/libstore/include/nix/store/build/derivation-builder.hh
@@ -76,10 +76,7 @@ struct DerivationBuilderParams
      */
     const StorePathSet & inputPaths;
 
-    /**
-     * @note we do in fact mutate this
-     */
-    std::map<std::string, InitialOutput> & initialOutputs;
+    const std::map<std::string, InitialOutput> & initialOutputs;
 
     const BuildMode & buildMode;