treewide: Use makeLibraryPath in LD_LIBRARY_PATHs

nixos/modules/services/x11/window-managers/metacity.nix

@@ -20,7 +20,7 @@ in
     services.xserver.windowManager.session = singleton
       { name = "metacity";
         start = ''
-          env LD_LIBRARY_PATH=${xorg.libX11.out}/lib:${xorg.libXext.out}/lib:/usr/lib/
+          env LD_LIBRARY_PATH=${lib.makeLibraryPath [ xorg.libX11 xorg.libXext ]}:/usr/lib/
           # !!! Hack: load the schemas for Metacity.
           GCONF_CONFIG_SOURCE=xml::~/.gconf ${gnome.GConf}/bin/gconftool-2 \
             --makefile-install-rule ${gnome.metacity}/etc/gconf/schemas/*.schemas # */

pkgs/development/libraries/science/math/clblas/cuda/default.nix

@@ -35,7 +35,7 @@ stdenv.mkDerivation rec {
     mkdir -p Build
     pushd Build
 
-    export LD_LIBRARY_PATH="${blas}/lib:${nvidia_x11}/lib"
+    export LD_LIBRARY_PATH="${stdenv.lib.makeLibraryPath [ blas nvidia_x11 ]}"
 
     cmake ../src -DCMAKE_INSTALL_PREFIX=$out \
                  -DCMAKE_BUILD_TYPE=Release \

pkgs/development/mobile/flashtool/default.nix

@@ -44,7 +44,7 @@ stdenv.mkDerivation rec {
     sed -i \
       -e 's|$(uname -m)|i686|' \
       -e 's|export JAVA_HOME=.*|export JAVA_HOME=${jre}|' \
-      -e 's|export LD_LIBRARY_PATH=.*|export LD_LIBRARY_PATH=${libXtst}/lib:${glib}/lib:${gtk2}/lib:./x10flasher_lib/linux/lib32|' \
+      -e 's|export LD_LIBRARY_PATH=.*|export LD_LIBRARY_PATH=${stdenv.lib.makeLibraryPath [ libXtst glib gtk2 ]}:./x10flasher_lib/linux/lib32|' \
       FlashTool FlashToolConsole
   '';