Heres the hack. Its related to Issue rust-lang#6009.

Author: pnkfelix

src/libsyntax/ext/expand.rs

@@ -478,6 +478,20 @@ pub fn core_macros() -> ~str {
             mod $c {
                 fn key(_x: @::core::condition::Handler<$in,$out>) { }
 
+                pub static cond :
+                    ::core::condition::Condition<'static,$in,$out> =
+                    ::core::condition::Condition {
+                        name: stringify!($c),
+                        key: key
+                    };
+            }
+        };
+
+        { pub $c:ident: $in:ty -> $out:ty; } => {
+
+            pub mod $c {
+                fn key(_x: @::core::condition::Handler<$in,$out>) { }
+
                 pub static cond :
                     ::core::condition::Condition<'static,$in,$out> =
                     ::core::condition::Condition {