From bd383d1b6f91c4fe7ac21c52771e92027f649fa0 Mon Sep 17 00:00:00 2001
From: Eelco Dolstra <edolstra@gmail.com>
Date: Fri, 4 Feb 2022 00:31:33 +0100
Subject: Make most calls to determinePos() lazy

---
 src/nix-build/nix-build.cc | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

(limited to 'src/nix-build/nix-build.cc')

diff --git a/src/nix-build/nix-build.cc b/src/nix-build/nix-build.cc
index a7dce23f1..ae4746955 100755
--- a/src/nix-build/nix-build.cc
+++ b/src/nix-build/nix-build.cc
@@ -318,7 +318,7 @@ static void main_nix_build(int argc, char * * argv)
 
         for (auto & i : attrPaths) {
             Value & v(*findAlongAttrPath(*state, i, *autoArgs, vRoot).first);
-            state->forceValue(v, v.determinePos(noPos));
+            state->forceValue(v, [&]() { return v.determinePos(noPos); });
             getDerivations(*state, v, "", *autoArgs, drvs, false);
         }
     }
-- 
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