diff --git a/lix/libstore/local-store.cc b/lix/libstore/local-store.cc
index 4a9bca245..b0538d085 100644
--- a/lix/libstore/local-store.cc
+++ b/lix/libstore/local-store.cc
@@ -1069,21 +1069,29 @@ StorePathSet LocalStore::queryValidDerivers(const StorePath & path)
 }
 
 
-std::map<std::string, std::optional<StorePath>>
+kj::Promise<Result<std::map<std::string, std::optional<StorePath>>>>
 LocalStore::queryStaticPartialDerivationOutputMap(const StorePath & path)
-{
-    return retrySQLite([&]() {
-        auto state = dbPool.get();
-        std::map<std::string, std::optional<StorePath>> outputs;
-        uint64_t drvId;
-        drvId = queryValidPathId(*state, path);
-        auto use(state->stmts->QueryDerivationOutputs.use()(drvId));
-        while (use.next())
-            outputs.insert_or_assign(
-                use.getStr(0), parseStorePath(use.getStr(1)));
+try {
+    co_return TRY_AWAIT(
+        // NOLINTNEXTLINE(cppcoreguidelines-avoid-capturing-lambda-coroutines)
+        retrySQLite([&]() -> kj::Promise<Result<std::map<std::string, std::optional<StorePath>>>> {
+            try {
+                auto state = dbPool.get();
+                std::map<std::string, std::optional<StorePath>> outputs;
+                uint64_t drvId;
+                drvId = queryValidPathId(*state, path);
+                auto use(state->stmts->QueryDerivationOutputs.use()(drvId));
+                while (use.next())
+                    outputs.insert_or_assign(use.getStr(0), parseStorePath(use.getStr(1)));
 
-        return outputs;
-    }, always_progresses);
+                co_return outputs;
+            } catch (...) {
+                co_return result::current_exception();
+            }
+        })
+    );
+} catch (...) {
+    co_return result::current_exception();
 }
 
 kj::Promise<Result<std::optional<StorePath>>>
diff --git a/lix/libstore/local-store.hh b/lix/libstore/local-store.hh
index 81a966421..2cdee0f0f 100644
--- a/lix/libstore/local-store.hh
+++ b/lix/libstore/local-store.hh
@@ -202,7 +202,8 @@ public:
 
     StorePathSet queryValidDerivers(const StorePath & path) override;
 
-    std::map<std::string, std::optional<StorePath>> queryStaticPartialDerivationOutputMap(const StorePath & path) override;
+    kj::Promise<Result<std::map<std::string, std::optional<StorePath>>>>
+    queryStaticPartialDerivationOutputMap(const StorePath & path) override;
 
     kj::Promise<Result<std::optional<StorePath>>>
     queryPathFromHashPart(const std::string & hashPart) override;
diff --git a/lix/libstore/remote-store.cc b/lix/libstore/remote-store.cc
index 1db697cab..ef5c1bb2d 100644
--- a/lix/libstore/remote-store.cc
+++ b/lix/libstore/remote-store.cc
@@ -352,7 +352,7 @@ try {
             );
         } else {
             auto & evalStore = *evalStore_;
-            auto outputs = evalStore.queryStaticPartialDerivationOutputMap(path);
+            auto outputs = TRY_AWAIT(evalStore.queryStaticPartialDerivationOutputMap(path));
             // union with the first branch overriding the statically-known ones
             // when non-`std::nullopt`.
             for (auto && [outputName, optPath] :
@@ -374,7 +374,7 @@ try {
         // from the derivation itself (and not the ones that are known because
         // the have been built), but as old stores don't handle floating-CA
         // derivations this shouldn't matter
-        co_return evalStore.queryStaticPartialDerivationOutputMap(path);
+        co_return TRY_AWAIT(evalStore.queryStaticPartialDerivationOutputMap(path));
     }
 } catch (...) {
     co_return result::current_exception();
diff --git a/lix/libstore/store-api.cc b/lix/libstore/store-api.cc
index bac4a5158..318429d7c 100644
--- a/lix/libstore/store-api.cc
+++ b/lix/libstore/store-api.cc
@@ -506,14 +506,17 @@ bool Store::PathInfoCacheValue::isKnownNow()
     return std::chrono::steady_clock::now() < time_point + ttl;
 }
 
-std::map<std::string, std::optional<StorePath>> Store::queryStaticPartialDerivationOutputMap(const StorePath & path)
-{
+kj::Promise<Result<std::map<std::string, std::optional<StorePath>>>>
+Store::queryStaticPartialDerivationOutputMap(const StorePath & path)
+try {
     std::map<std::string, std::optional<StorePath>> outputs;
     auto drv = readInvalidDerivation(path);
     for (auto & [outputName, output] : drv.outputsAndOptPaths(*this)) {
         outputs.emplace(outputName, output.second);
     }
-    return outputs;
+    co_return outputs;
+} catch (...) {
+    co_return result::current_exception();
 }
 
 kj::Promise<Result<std::map<std::string, std::optional<StorePath>>>>
@@ -521,7 +524,7 @@ Store::queryPartialDerivationOutputMap(const StorePath & path, Store * evalStore
 try {
     auto & evalStore = evalStore_ ? *evalStore_ : *this;
 
-    auto outputs = evalStore.queryStaticPartialDerivationOutputMap(path);
+    auto outputs = TRY_AWAIT(evalStore.queryStaticPartialDerivationOutputMap(path));
 
     if (!experimentalFeatureSettings.isEnabled(Xp::CaDerivations))
         co_return outputs;
diff --git a/lix/libstore/store-api.hh b/lix/libstore/store-api.hh
index 76d840480..c7ad1a4de 100644
--- a/lix/libstore/store-api.hh
+++ b/lix/libstore/store-api.hh
@@ -463,8 +463,8 @@ public:
      * Just a helper function for implementing
      * `queryPartialDerivationOutputMap`.
      */
-    virtual std::map<std::string, std::optional<StorePath>> queryStaticPartialDerivationOutputMap(
-        const StorePath & path);
+    virtual kj::Promise<Result<std::map<std::string, std::optional<StorePath>>>>
+    queryStaticPartialDerivationOutputMap(const StorePath & path);
 
     /**
      * Query the mapping outputName=>outputPath for the given derivation.