From 972405edf5ff0d90185fb4021993c4a942787578 Mon Sep 17 00:00:00 2001
From: Eelco Dolstra <edolstra@gmail.com>
Date: Thu, 7 Oct 2021 12:15:22 +0200
Subject: [PATCH] Allow access to path copied to the store

Fixes https://github.com/NixOS/nix/pull/5163#issuecomment-931733912.
---
 src/libexpr/eval.cc | 1 +
 1 file changed, 1 insertion(+)

diff --git a/src/libexpr/eval.cc b/src/libexpr/eval.cc
index ce266f522..2483132f6 100644
--- a/src/libexpr/eval.cc
+++ b/src/libexpr/eval.cc
@@ -1897,6 +1897,7 @@ string EvalState::copyPathToStore(PathSet & context, const Path & path)
         dstPath = store->printStorePath(p);
         srcToStore.insert_or_assign(path, std::move(p));
         printMsg(lvlChatty, "copied source '%1%' -> '%2%'", path, dstPath);
+        allowPath(dstPath);
     }
 
     context.insert(dstPath);