From e54812c3c5f27861b19c95b245f464389ea8d178 Mon Sep 17 00:00:00 2001
From: Hermes <hermes@lazyworkhorse.net>
Date: Fri, 19 Jun 2026 12:13:37 -0400
Subject: [PATCH] fix: add native gcc for clamav Rust build scripts in
 cross-compile

---
 flake.nix | 12 +++++-------
 1 file changed, 5 insertions(+), 7 deletions(-)

diff --git a/flake.nix b/flake.nix
index 63d4bc2..51af370 100644
--- a/flake.nix
+++ b/flake.nix
@@ -193,13 +193,11 @@
             "-Dtest_run_result=0"
             "-Dtest_run_result__TRYRUN_OUTPUT="
           ];
-          # Rust proc-macro build scripts need a native linker; cmake overrides
-          # CC/CXX to the cross-compiler, confusing cargo. Set CC to native gcc
-          # so proc-macros can compile and run on the build host.
-          preConfigure = (old.preConfigure or "") + ''
-            export CC=gcc
-            export CXX=g++
-          '';
+          # Give cargo access to a native C compiler for Rust build script
+          # compilations (proc-macros run on the BUILD host, not the target).
+          nativeBuildInputs = (old.nativeBuildInputs or []) ++ [
+            prev.buildPackages.gcc
+          ];
         });
       };