2 files changed, 23 insertions, 6 deletions

diff --git a/src/libexpr/primops.cc b/src/libexpr/primops.cc
index 9356d307e..8e9e5630d 100644
--- a/src/libexpr/primops.cc
+++ b/src/libexpr/primops.cc
@@ -1244,7 +1244,13 @@ static void prim_derivationStrict(EvalState & state, const PosIdx pos, Value * *
         auto h = newHashAllowEmpty(*outputHash, parseHashTypeOpt(outputHashAlgo));
 
         auto method = ingestionMethod.value_or(FileIngestionMethod::Flat);
-        auto outPath = state.store->makeFixedOutputPath(method, h, drvName);
+        auto outPath = state.store->makeFixedOutputPath(drvName, FixedOutputInfo {
+            {
+                .method = method,
+                .hash = h,
+            },
+            {},
+        });
         drv.env["out"] = state.store->printStorePath(outPath);
         drv.outputs.insert_or_assign("out",
             DerivationOutput::CAFixed {
@@ -1999,7 +2005,13 @@ static void addPath(
 
         std::optional<StorePath> expectedStorePath;
         if (expectedHash)
-            expectedStorePath = state.store->makeFixedOutputPath(method, *expectedHash, name);
+            expectedStorePath = state.store->makeFixedOutputPath(name, FixedOutputInfo {
+                {
+                    .method = method,
+                    .hash = *expectedHash,
+                },
+                {},
+            });
 
         if (!expectedHash || !state.store->isValidPath(*expectedStorePath)) {
             StorePath dstPath = settings.readOnlyMode
diff --git a/src/libexpr/primops/fetchTree.cc b/src/libexpr/primops/fetchTree.cc
index 1fb480089..4181f0b7d 100644
--- a/src/libexpr/primops/fetchTree.cc
+++ b/src/libexpr/primops/fetchTree.cc
@@ -228,10 +228,15 @@ static void fetch(EvalState & state, const PosIdx pos, Value * * args, Value & v
 
     // early exit if pinned and already in the store
     if (expectedHash && expectedHash->type == htSHA256) {
-        auto expectedPath =
-            unpack
-            ? state.store->makeFixedOutputPath(FileIngestionMethod::Recursive, *expectedHash, name, {})
-            : state.store->makeFixedOutputPath(FileIngestionMethod::Flat, *expectedHash, name, {});
+        auto expectedPath = state.store->makeFixedOutputPath(
+            name,
+            FixedOutputInfo {
+                {
+                    .method = unpack ? FileIngestionMethod::Recursive : FileIngestionMethod::Flat,
+                    .hash = *expectedHash,
+                },
+                {}
+            });
 
         if (state.store->isValidPath(expectedPath)) {
             state.allowAndSetStorePathString(expectedPath, v);