liburcu: platforms: linux -> unix

vcunat · vcunat · commit 142696de8842 · 2017-01-26T09:26:51.000+01:00
There's probably no reason to restrict it to Linux.
I can't test directly, but Hombrew does have the package.
My intention is to build knot-resolver for Darwin as well.
diff --git a/pkgs/development/libraries/liburcu/default.nix b/pkgs/development/libraries/liburcu/default.nix
@@ -13,7 +13,7 @@ stdenv.mkDerivation rec {
     description = "Userspace RCU (read-copy-update) library";
     homepage = http://lttng.org/urcu;
     license = licenses.lgpl21Plus;
-    platforms = platforms.linux;
+    platforms = platforms.unix;
     maintainers = [ maintainers.bjornfor ];
   };
 
