From d6f52f3cefc8ae8a08309e2e46ad9d46ec6b706d Mon Sep 17 00:00:00 2001
From: Andreas Rumpf <rumpf_a@web.de>
Date: Thu, 7 Nov 2019 12:02:26 +0100
Subject: [PATCH] added 'since' template for further stdlib additions

(cherry picked from commit 372b01711e2a4d3f0672f75aaa0895147b928cfc)
---
 lib/system/inclrtl.nim | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/lib/system/inclrtl.nim b/lib/system/inclrtl.nim
index 4193f2bdd9..6bff819e67 100644
--- a/lib/system/inclrtl.nim
+++ b/lib/system/inclrtl.nim
@@ -48,3 +48,7 @@ when defined(nimlocks):
   {.pragma: benign, gcsafe, locks: 0.}
 else:
   {.pragma: benign, gcsafe.}
+
+template since(version, body: untyped) {.dirty.} =
+  when version <= (NimMajor, NimMinor):
+    body