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-rw-r--r--pkgs/development/libraries/newt/default.nix7
1 files changed, 3 insertions, 4 deletions
diff --git a/pkgs/development/libraries/newt/default.nix b/pkgs/development/libraries/newt/default.nix
index a10f52462a8e..1a5656b7ca16 100644
--- a/pkgs/development/libraries/newt/default.nix
+++ b/pkgs/development/libraries/newt/default.nix
@@ -22,10 +22,9 @@ stdenv.mkDerivation rec {
     unset CPP
   '';
 
-  # Use `lib.optionalString` next mass rebuild.
-  makeFlags = if stdenv.buildPlatform == stdenv.hostPlatform
-              then null
-              else "CROSS_COMPILE=${stdenv.cc.targetPrefix}";
+  makeFlags = stdenv.lib.optionals (stdenv.buildPlatform != stdenv.hostPlatform) [
+    "CROSS_COMPILE=${stdenv.cc.targetPrefix}"
+  ];
 
   meta = with stdenv.lib; {
     homepage = https://fedorahosted.org/newt/;