can't compile on Mac OS X
Hi,
I use nimrod from git head and aporia sources from git head. When I try to compile on MacOS X I get this error:
Aporia/search.nim(211, 4) Error: internal error: expr(nkYieldStmt); unknown node kind

I can compile on linux and on windows. So this error is strange - I don't know if it is aporia or nimrod related.
