1 files changed, 1 insertions, 0 deletions
diff --git a/pkgs/tools/text/xml/rxp/default.nix b/pkgs/tools/text/xml/rxp/default.nix
index a50e91b78668..fc11e210c3cc 100644
--- a/pkgs/tools/text/xml/rxp/default.nix
+++ b/pkgs/tools/text/xml/rxp/default.nix
@@ -13,5 +13,6 @@ stdenv.mkDerivation rec {
     license = stdenv.lib.licenses.gpl2Plus;
     description = "A validating XML parser written in C";
     homepage = http://www.cogsci.ed.ac.uk/~richard/rxp.html;
+    platforms = stdenv.lib.platforms.unix;
   };
 }