From e8e1d420f364afbfface61d3f03889e10e6066c9 Mon Sep 17 00:00:00 2001
From: Eelco Dolstra <edolstra@gmail.com>
Date: Mon, 21 Sep 2020 18:22:45 +0200
Subject: Don't include <regex> in header files

This reduces compilation time by ~15 seconds (CPU time).

Issue #4045.
---
 src/nix-env/nix-env.cc | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

(limited to 'src/nix-env')

diff --git a/src/nix-env/nix-env.cc b/src/nix-env/nix-env.cc
index e5a433ac0..3e7c453fb 100644
--- a/src/nix-env/nix-env.cc
+++ b/src/nix-env/nix-env.cc
@@ -230,7 +230,7 @@ static DrvInfos filterBySelector(EvalState & state, const DrvInfos & allElems,
 {
     DrvNames selectors = drvNamesFromArgs(args);
     if (selectors.empty())
-        selectors.push_back(DrvName("*"));
+        selectors.emplace_back("*");
 
     DrvInfos elems;
     set<unsigned int> done;
-- 
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