From 99b73fb5071db9fd757c9927fc3fde34e2abac63 Mon Sep 17 00:00:00 2001
From: Eelco Dolstra <edolstra@gmail.com>
Date: Wed, 9 Oct 2019 15:51:52 +0200
Subject: OCD performance fix: {find,count}+insert => insert

---
 src/libstore/builtins/buildenv.cc | 3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

(limited to 'src/libstore/builtins/buildenv.cc')

diff --git a/src/libstore/builtins/buildenv.cc b/src/libstore/builtins/buildenv.cc
index 74e706664..096593886 100644
--- a/src/libstore/builtins/buildenv.cc
+++ b/src/libstore/builtins/buildenv.cc
@@ -123,8 +123,7 @@ static Path out;
 
 static void addPkg(const Path & pkgDir, int priority)
 {
-    if (done.count(pkgDir)) return;
-    done.insert(pkgDir);
+    if (!done.insert(pkgDir).second) return;
     createLinks(pkgDir, out, priority);
 
     try {
-- 
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