cups: split the $lib output

This saves > 10 MB from most closures.
Printing test succeeds on x86_64-linux.

1 files changed, 1 insertions, 1 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 0860a90192f0d..d4b85e0dfe433 100644
--- a/pkgs/development/libraries/qt-4.x/4.8/default.nix
+++ b/pkgs/development/libraries/qt-4.x/4.8/default.nix
@@ -61,7 +61,7 @@ stdenv.mkDerivation rec {
       ./libressl.patch
       (substituteAll {
         src = ./dlopen-absolute-paths.diff;
-        cups = if cups != null then cups.out else null;
+        cups = if cups != null then stdenv.lib.getLib cups else null;
         icu = icu.out;
         libXfixes = libXfixes.out;
         glibc = stdenv.cc.libc.out;