From c43f446f4e3a1a8d91560b6ebbcc7d4fbbbf71c4 Mon Sep 17 00:00:00 2001
From: regnat <rg@regnat.ovh>
Date: Thu, 25 Feb 2021 16:58:27 +0100
Subject: [PATCH] Make `nix copy` work without the ca-derivations flag

The experimental feature was by mistake required for `nix copy` to work
at oll
---
 src/libstore/store-api.cc | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/src/libstore/store-api.cc b/src/libstore/store-api.cc
index b7a3f7b11..77c310988 100644
--- a/src/libstore/store-api.cc
+++ b/src/libstore/store-api.cc
@@ -786,13 +786,14 @@ void copyStorePath(ref<Store> srcStore, ref<Store> dstStore,
 std::map<StorePath, StorePath> copyPaths(ref<Store> srcStore, ref<Store> dstStore, const RealisedPath::Set & paths,
     RepairFlag repair, CheckSigsFlag checkSigs, SubstituteFlag substitute)
 {
-    settings.requireExperimentalFeature("ca-derivations");
     StorePathSet storePaths;
     std::set<Realisation> realisations;
     for (auto & path : paths) {
         storePaths.insert(path.path());
-        if (auto realisation = std::get_if<Realisation>(&path.raw))
+        if (auto realisation = std::get_if<Realisation>(&path.raw)) {
+            settings.requireExperimentalFeature("ca-derivations");
             realisations.insert(*realisation);
+        }
     }
     auto pathsMap = copyPaths(srcStore, dstStore, storePaths, repair, checkSigs, substitute);
     try {