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-rw-r--r--tvix/eval/docs/known-optimisation-potential.md3
1 files changed, 3 insertions, 0 deletions
diff --git a/tvix/eval/docs/known-optimisation-potential.md b/tvix/eval/docs/known-optimisation-potential.md
index 951771e739a7..0ab185fe1be2 100644
--- a/tvix/eval/docs/known-optimisation-potential.md
+++ b/tvix/eval/docs/known-optimisation-potential.md
@@ -157,3 +157,6 @@ optimisations, but note the most important ones here.
   be used. We should create a phantom binding for the from expression that
   is reused in the inherits, so only a single thunk is created for the from
   expression.
+
+  Since we discovered this, C++ Nix has implemented a similar optimization:
+  <https://github.com/NixOS/nix/pull/9847>.