From 86b79628073154b853b2e57360c062654826f5ee Mon Sep 17 00:00:00 2001
From: Alex Shabalin <alex.shabalin@tweag.io>
Date: Fri, 19 Nov 2021 16:29:55 +0100
Subject: [PATCH] Use warn to print a warning

---
 src/nix-env/nix-env.cc | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/src/nix-env/nix-env.cc b/src/nix-env/nix-env.cc
index 1c78b5307..490f450df 100644
--- a/src/nix-env/nix-env.cc
+++ b/src/nix-env/nix-env.cc
@@ -298,8 +298,8 @@ std::vector<Match> pickNewestOnly(EvalState & state, std::vector<Match> matches)
     matches.clear();
     for (auto & [name, match] : newest) {
         if (multiple.find(name) != multiple.end())
-            printInfo(
-                "warning: there are multiple derivations named '%1%'; using the first one",
+            warn(
+                "there are multiple derivations named '%1%'; using the first one",
                 name);
         matches.push_back(match);
     }