diff --git a/pkgs/top-level/all-packages.nix b/pkgs/top-level/all-packages.nix
index 539751f9cc1..ea30e6f58b4 100644
--- a/pkgs/top-level/all-packages.nix
+++ b/pkgs/top-level/all-packages.nix
@@ -10410,12 +10410,16 @@ in
       };
     }) else ccWrapper;
 
-  gccStdenv = if stdenv.cc.isGNU then stdenv else stdenv.override {
-    allowedRequisites = null;
-    # Remove libcxx/libcxxabi, and add clang for AS if on darwin (it uses
-    # clang's internal assembler).
-    extraBuildInputs = lib.optional stdenv.hostPlatform.isDarwin clang.cc;
-  };
+  gccStdenv =
+    if stdenv.cc.isGNU
+    then stdenv
+    else stdenv.override {
+      cc = buildPackages.gcc;
+      allowedRequisites = null;
+      # Remove libcxx/libcxxabi, and add clang for AS if on darwin (it uses
+      # clang's internal assembler).
+      extraBuildInputs = lib.optional stdenv.hostPlatform.isDarwin clang.cc;
+    };
 
   gcc49Stdenv = overrideCC gccStdenv buildPackages.gcc49;
   gcc6Stdenv = overrideCC gccStdenv buildPackages.gcc6;