diff --git a/pkgs/development/libraries/SDL2_gfx/default.nix b/pkgs/development/libraries/SDL2_gfx/default.nix
index d3c868cb3bdf..a630e9cead8a 100644
--- a/pkgs/development/libraries/SDL2_gfx/default.nix
+++ b/pkgs/development/libraries/SDL2_gfx/default.nix
@@ -9,9 +9,8 @@ stdenv.mkDerivation rec {
     sha256 = "16jrijzdp095qf416zvj9gs2fqqn6zkyvlxs5xqybd0ip37cp6yn";
   };
 
-  nativeBuildInputs = stdenv.lib.optional stdenv.isDarwin darwin.libobjc;
-
-  buildInputs = [ SDL2 ];
+  buildInputs = [ SDL2 ]
+    ++ stdenv.lib.optional stdenv.isDarwin darwin.libobjc;
 
   configureFlags = if stdenv.isi686 || stdenv.isx86_64 then "--enable-mmx" else "--disable-mmx";
 
diff --git a/pkgs/development/libraries/SDL2_net/default.nix b/pkgs/development/libraries/SDL2_net/default.nix
index ad6232406b0a..780444d51f4f 100644
--- a/pkgs/development/libraries/SDL2_net/default.nix
+++ b/pkgs/development/libraries/SDL2_net/default.nix
@@ -9,7 +9,7 @@ stdenv.mkDerivation rec {
     sha256 = "08cxc1bicmyk89kiks7izw1rlx5ng5n6xpy8fy0zxni3b9z8mkhm";
   };
 
-  nativeBuildInputs = stdenv.lib.optional stdenv.isDarwin darwin.libobjc;
+  buildInputs = stdenv.lib.optional stdenv.isDarwin darwin.libobjc;
 
   propagatedBuildInputs = [ SDL2 ];
 
diff --git a/pkgs/development/libraries/SDL2_ttf/default.nix b/pkgs/development/libraries/SDL2_ttf/default.nix
index d691d6dfa1d9..87436119ef47 100644
--- a/pkgs/development/libraries/SDL2_ttf/default.nix
+++ b/pkgs/development/libraries/SDL2_ttf/default.nix
@@ -9,9 +9,8 @@ stdenv.mkDerivation rec {
     sha256 = "0xljwcpvd2knrjdfag5b257xqayplz55mqlszrqp0kpnphh5xnrl";
   };
 
-  nativeBuildInputs = stdenv.lib.optional stdenv.isDarwin darwin.libobjc;
-
-  buildInputs = [ SDL2 freetype mesa_noglu ];
+  buildInputs = [ SDL2 freetype mesa_noglu ]
+    ++ stdenv.lib.optional stdenv.isDarwin darwin.libobjc;
 
   meta = with stdenv.lib; {
     description = "SDL TrueType library";
diff --git a/pkgs/development/libraries/smpeg2/default.nix b/pkgs/development/libraries/smpeg2/default.nix
index 83660e042fc4..3207bdb3a7f2 100644
--- a/pkgs/development/libraries/smpeg2/default.nix
+++ b/pkgs/development/libraries/smpeg2/default.nix
@@ -15,10 +15,10 @@ stdenv.mkDerivation rec {
     ./sdl2.patch
   ];
 
-  nativeBuildInputs = [ autoconf automake pkgconfig makeWrapper ]
-    ++ stdenv.lib.optional stdenv.isDarwin darwin.libobjc;
+  nativeBuildInputs = [ autoconf automake pkgconfig makeWrapper ];
 
-  buildInputs = [ SDL2 ];
+  buildInputs = [ SDL2 ]
+    ++ stdenv.lib.optional stdenv.isDarwin darwin.libobjc;
 
   preConfigure = ''
     sh autogen.sh