--- config/nim.cfg.orig	2017-09-18 14:38:15.184686000 +0000
+++ config/nim.cfg	2017-09-18 14:39:25.862654000 +0000
@@ -74,12 +74,6 @@
     clang.cpp.options.linker = "-ldl"
     tcc.options.linker = "-ldl"
   @end
-  @if bsd or haiku:
-    # BSD got posix_spawn only recently, so we deactivate it for osproc:
-    define:useFork
-    # at least NetBSD has problems with thread local storage:
-    tlsEmulation:on
-  @end
   @if haiku:
     # -fopenmp
     gcc.options.linker = "-lroot -lnetwork"