From da83b992ed0772b7f866ac9246cbbffc835967bd Mon Sep 17 00:00:00 2001
From: Clyybber <darkmine956@gmail.com>
Date: Mon, 15 Mar 2021 21:40:40 +0100
Subject: [PATCH] Let koch temp -u:leanCompiler work (#17388)

---
 koch.nim | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/koch.nim b/koch.nim
index 03e4a9d000..bf7fb1e620 100644
--- a/koch.nim
+++ b/koch.nim
@@ -465,7 +465,7 @@ proc temp(args: string) =
   if "doc" notin programArgs and
       "threads" notin programArgs and
       "js" notin programArgs and "rst2html" notin programArgs:
-    bootArgs.add " -d:leanCompiler"
+    bootArgs = " -d:leanCompiler" & bootArgs
   let nimexec = findNim().quoteShell()
   exec(nimexec & " c -d:debug --debugger:native -d:nimBetterRun " & bootArgs & " " & (d / "compiler" / "nim"), 125)
   copyExe(output, finalDest)