From ee5860f54283615a9029f34c446f144a2a01b0e9 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?J=C3=B6rg=20Thalheim?= <joerg@thalheim.io>
Date: Sun, 30 Nov 2025 14:24:12 +0100
Subject: [PATCH] Fix crash when querying realisations without ca-derivations
 enabled

queryRealisationUncached was crashing with an assertion failure when
ca-derivations experimental feature is not enabled, because the SQLite
statements for realisations are only initialized when ca-derivations
is enabled.

Return nullptr (no realisation found) when ca-derivations is disabled,
matching the behavior of other CA-related functions like registerDrvOutput
which check for the feature before proceeding.
---
 src/libstore/local-store.cc | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/src/libstore/local-store.cc b/src/libstore/local-store.cc
index 2c4d546f8..1ff47ff35 100644
--- a/src/libstore/local-store.cc
+++ b/src/libstore/local-store.cc
@@ -1634,6 +1634,10 @@ void LocalStore::queryRealisationUncached(
     const DrvOutput & id, Callback<std::shared_ptr<const UnkeyedRealisation>> callback) noexcept
 {
     try {
+        if (!experimentalFeatureSettings.isEnabled(Xp::CaDerivations)) {
+            callback(nullptr);
+            return;
+        }
         auto maybeRealisation = retrySQLite<std::optional<const UnkeyedRealisation>>(
             [&]() { return queryRealisation_(*_state->lock(), id); });
         if (maybeRealisation)