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-rw-r--r--src/libstore/build.cc2
-rw-r--r--src/libstore/local-store.cc12
-rw-r--r--src/libstore/local-store.hh4
3 files changed, 14 insertions, 4 deletions
diff --git a/src/libstore/build.cc b/src/libstore/build.cc
index 73139d6d551a..122a754e1e1d 100644
--- a/src/libstore/build.cc
+++ b/src/libstore/build.cc
@@ -3687,7 +3687,7 @@ void SubstitutionGoal::tryNext()
        only after we've downloaded the path. */
     if (worker.store.requireSigs
         && !sub->isTrusted
-        && !info->checkSignatures(worker.store, worker.store.publicKeys))
+        && !info->checkSignatures(worker.store, worker.store.getPublicKeys()))
     {
         printError("warning: substituter '%s' does not have a valid signature for path '%s'",
             sub->getUri(), storePath);
diff --git a/src/libstore/local-store.cc b/src/libstore/local-store.cc
index acc0002acee1..b63584f28a30 100644
--- a/src/libstore/local-store.cc
+++ b/src/libstore/local-store.cc
@@ -53,7 +53,6 @@ LocalStore::LocalStore(const Params & params)
     , trashDir(realStoreDir + "/trash")
     , tempRootsDir(stateDir + "/temproots")
     , fnTempRoots(fmt("%s/%d", tempRootsDir, getpid()))
-    , publicKeys(getDefaultPublicKeys())
 {
     auto state(_state.lock());
 
@@ -964,12 +963,21 @@ void LocalStore::invalidatePath(State & state, const Path & path)
 }
 
 
+const PublicKeys & LocalStore::getPublicKeys()
+{
+    auto state(_state.lock());
+    if (!state->publicKeys)
+        state->publicKeys = std::make_unique<PublicKeys>(getDefaultPublicKeys());
+    return *state->publicKeys;
+}
+
+
 void LocalStore::addToStore(const ValidPathInfo & info, Source & source,
     RepairFlag repair, CheckSigsFlag checkSigs, std::shared_ptr<FSAccessor> accessor)
 {
     assert(info.narHash);
 
-    if (requireSigs && checkSigs && !info.checkSignatures(*this, publicKeys))
+    if (requireSigs && checkSigs && !info.checkSignatures(*this, getPublicKeys()))
         throw Error("cannot add path '%s' because it lacks a valid signature", info.path);
 
     addTempRoot(info.path);
diff --git a/src/libstore/local-store.hh b/src/libstore/local-store.hh
index 0d6c176595c8..1209a06356f7 100644
--- a/src/libstore/local-store.hh
+++ b/src/libstore/local-store.hh
@@ -77,6 +77,8 @@ private:
            minFree but not much below availAfterGC, then there is no
            point in starting a new GC. */
         uint64_t availAfterGC = std::numeric_limits<uint64_t>::max();
+
+        std::unique_ptr<PublicKeys> publicKeys;
     };
 
     Sync<State, std::recursive_mutex> _state;
@@ -100,7 +102,7 @@ private:
         settings.requireSigs,
         "require-sigs", "whether store paths should have a trusted signature on import"};
 
-    PublicKeys publicKeys;
+    const PublicKeys & getPublicKeys();
 
 public: