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-rw-r--r--pkgs/development/libraries/qt-4.x/4.8/default.nix4
1 files changed, 2 insertions, 2 deletions
diff --git a/pkgs/development/libraries/qt-4.x/4.8/default.nix b/pkgs/development/libraries/qt-4.x/4.8/default.nix
index 632b5fc1fd5e..25953949eb76 100644
--- a/pkgs/development/libraries/qt-4.x/4.8/default.nix
+++ b/pkgs/development/libraries/qt-4.x/4.8/default.nix
@@ -206,13 +206,13 @@ stdenv.mkDerivation rec {
 
   enableParallelBuilding = true;
 
-  NIX_CFLAGS_COMPILE =
+  NIX_CFLAGS_COMPILE = toString (
     # with gcc7 the warnings blow the log over Hydra's limit
     [ "-Wno-expansion-to-defined" "-Wno-unused-local-typedefs" ]
     ++ lib.optional stdenv.isLinux "-std=gnu++98" # gnu++ in (Obj)C flags is no good on Darwin
     ++ lib.optionals (stdenv.isFreeBSD || stdenv.isDarwin)
       [ "-I${glib.dev}/include/glib-2.0" "-I${glib.out}/lib/glib-2.0/include" ]
-    ++ lib.optional stdenv.isDarwin "-I${libcxx}/include/c++/v1";
+    ++ lib.optional stdenv.isDarwin "-I${libcxx}/include/c++/v1");
 
   NIX_LDFLAGS = lib.optionalString (stdenv.isFreeBSD || stdenv.isDarwin) "-lglib-2.0";