From 38663fb4345d8029b18a4eda10945aac02eb2795 Mon Sep 17 00:00:00 2001
From: Cole Helbling <cole.helbling@determinate.systems>
Date: Mon, 8 Sep 2025 08:24:26 +0200
Subject: [PATCH] Pass `dir` in extraAttrs when overriding the registry

This is handled similarly in the handler for `--override-flake` in
`MixEvalArgs`.
---
 src/libcmd/installables.cc | 8 +++++++-
 1 file changed, 7 insertions(+), 1 deletion(-)

diff --git a/src/libcmd/installables.cc b/src/libcmd/installables.cc
index 0e6a204a7..96ff06ad3 100644
--- a/src/libcmd/installables.cc
+++ b/src/libcmd/installables.cc
@@ -178,10 +178,16 @@ MixFlakeOptions::MixFlakeOptions()
             for (auto & [inputName, input] : flake.lockFile.root->inputs) {
                 auto input2 = flake.lockFile.findInput({inputName}); // resolve 'follows' nodes
                 if (auto input3 = std::dynamic_pointer_cast<const flake::LockedNode>(input2)) {
+                    fetchers::Attrs extraAttrs;
+
+                    if (!input3->lockedRef.subdir.empty()) {
+                        extraAttrs["dir"] = input3->lockedRef.subdir;
+                    }
+
                     overrideRegistry(
                         fetchers::Input::fromAttrs(fetchSettings, {{"type", "indirect"}, {"id", inputName}}),
                         input3->lockedRef.input,
-                        {});
+                        extraAttrs);
                 }
             }
         }},