treewide: Fix output references to cups

pkgs/misc/cups/drivers/samsung/default.nix

@@ -31,7 +31,7 @@ in stdenv.mkDerivation rec {
 
     my_patchelf \
       --set-interpreter $(cat $NIX_CC/nix-support/dynamic-linker) \
-      --set-rpath ${cups}/lib:$(cat $NIX_CC/nix-support/orig-cc)/lib:${stdenv.glibc}/lib \
+      --set-rpath ${cups.out}/lib:$(cat $NIX_CC/nix-support/orig-cc)/lib:${stdenv.glibc}/lib \
       - ${arch}/{pstosecps,rastertospl,smfpnetdiscovery}
 
     mkdir -p $out/etc/sane.d/dll.d/

pkgs/misc/cups/filters.nix

@@ -37,7 +37,7 @@ in stdenv.mkDerivation rec {
       # Ensure that bannertopdf can find the PDF templates in
       # $out. (By default, it assumes that cups and cups-filters are
       # installed in the same prefix.)
-      substituteInPlace config.h --replace ${cups}/share/cups/data $out/share/cups/data
+      substituteInPlace config.h --replace ${cups.out}/share/cups/data $out/share/cups/data
 
       # Ensure that gstoraster can find gs in $PATH.
       substituteInPlace filter/gstoraster.c --replace execve execvpe