From 17b7fb383f04b792b5709e2ed497330c7962c6a3 Mon Sep 17 00:00:00 2001
From: Sergei Zimmerman <sergei@zimmerman.foo>
Date: Thu, 16 Oct 2025 01:04:26 +0300
Subject: [PATCH] tests: Fix splicing in functional tests for nix-cli

This is necessary to fix nix-everything-llvm.
The problem here is that nix-cli is taken from the previous
stage that is built with libstdc++, but this derivation builds
plugins with libc++ and the plugin load fails miserably.
---
 tests/functional/package.nix | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/tests/functional/package.nix b/tests/functional/package.nix
index a36c2e2d3..6830a9e58 100644
--- a/tests/functional/package.nix
+++ b/tests/functional/package.nix
@@ -60,7 +60,10 @@ mkMesonDerivation (
     ];
 
     nativeBuildInputs = finalAttrs.passthru.externalNativeBuildInputs ++ [
-      nix-cli
+      # Explicitly splice the hostHost variant to fix LLVM tests. The nix-cli
+      # has to be in PATH, but must come from the host context where it's built
+      # with libc++.
+      (nix-cli.__spliced.hostHost or nix-cli)
     ];
 
     buildInputs = [