From 3a62be7227e22df2be6b587aa23079f823958c04 Mon Sep 17 00:00:00 2001
From: John Ericson <John.Ericson@Obsidian.Systems>
Date: Sun, 14 Dec 2025 11:49:13 -0500
Subject: [PATCH] Fix path locks move/assignment

No copying allowed

Co-authored-by: Sergei Zimmerman <sergei@zimmerman.foo>
---
 src/libstore/include/nix/store/pathlocks.hh | 16 ++++++++++++++++
 1 file changed, 16 insertions(+)

diff --git a/src/libstore/include/nix/store/pathlocks.hh b/src/libstore/include/nix/store/pathlocks.hh
index 7e27bec4c..e6bb898e7 100644
--- a/src/libstore/include/nix/store/pathlocks.hh
+++ b/src/libstore/include/nix/store/pathlocks.hh
@@ -33,6 +33,22 @@ private:
 public:
     PathLocks();
     PathLocks(const std::set<std::filesystem::path> & paths, const std::string & waitMsg = "");
+
+    PathLocks(PathLocks && other) noexcept
+        : fds(std::exchange(other.fds, {}))
+        , deletePaths(other.deletePaths)
+    {
+    }
+
+    PathLocks & operator=(PathLocks && other) noexcept
+    {
+        fds = std::exchange(other.fds, {});
+        deletePaths = other.deletePaths;
+        return *this;
+    }
+
+    PathLocks(const PathLocks &) = delete;
+    PathLocks & operator=(const PathLocks &) = delete;
     bool lockPaths(const std::set<std::filesystem::path> & _paths, const std::string & waitMsg = "", bool wait = true);
     ~PathLocks();
     void unlock();