From 13c47d64aa7b3374cf414ae7d362d0d003cacb4b Mon Sep 17 00:00:00 2001
From: Someone Serge <sergei.kozlukov@aalto.fi>
Date: Wed, 5 Apr 2023 19:04:42 +0300
Subject: [PATCH] faissWithCuda: do not leak the old libstdc++

---
 pkgs/development/libraries/science/math/faiss/default.nix | 6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

diff --git a/pkgs/development/libraries/science/math/faiss/default.nix b/pkgs/development/libraries/science/math/faiss/default.nix
index 2a6f144d862..9d0265a9ce8 100644
--- a/pkgs/development/libraries/science/math/faiss/default.nix
+++ b/pkgs/development/libraries/science/math/faiss/default.nix
@@ -25,7 +25,7 @@
   builtins.head optLevels
 , faiss # To run demos in the tests
 , runCommand
-}:
+}@inputs:
 
 assert cudaSupport -> nvidia-thrust.cudaSupport;
 
@@ -33,9 +33,11 @@ let
   pname = "faiss";
   version = "1.7.2";
 
-  inherit (cudaPackages) cudaFlags;
+  inherit (cudaPackages) cudaFlags backendStdenv;
   inherit (cudaFlags) cudaCapabilities dropDot;
 
+  stdenv = if cudaSupport then backendStdenv else inputs.stdenv;
+
   cudaJoined = symlinkJoin {
     name = "cuda-packages-unsplit";
     paths = with cudaPackages; [