From 716d68cb24beb4006815faf1b710a9e25e1ec5be Mon Sep 17 00:00:00 2001
From: ringabout <43030857+ringabout@users.noreply.github.com>
Date: Thu, 29 Sep 2022 23:54:45 +0800
Subject: [PATCH] fixes postgres with `nimPreviewSlimSystem` (#20455)

---
 lib/wrappers/postgres.nim | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/lib/wrappers/postgres.nim b/lib/wrappers/postgres.nim
index 0bde3f1e6e..cb23076f6a 100644
--- a/lib/wrappers/postgres.nim
+++ b/lib/wrappers/postgres.nim
@@ -27,6 +27,10 @@ elif defined(macosx):
 else:
   const
     dllName = "libpq.so(.5|)"
+    
+when defined(nimPreviewSlimSystem):
+  import std/syncio
+
 type
   POid* = ptr Oid
   Oid* = int32