Only apply patch on darwin

(cherry picked from commit 4e96d0e2b7)

pkgs/development/libraries/qca-qt5/default.nix

@@ -12,8 +12,8 @@ stdenv.mkDerivation rec {
   nativeBuildInputs = [ cmake pkgconfig ];
 
   # Without this patch cmake fails with a "No known features for CXX compiler"
-  # error
-  patches = [./move-project.patch];
+  # error on darwin
+  patches = stdenv.lib.optional stdenv.isDarwin ./move-project.patch ;
 
   # tells CMake to use this CA bundle file if it is accessible
   preConfigure = ''export QC_CERTSTORE_PATH=/etc/ssl/certs/ca-certificates.crt'';