Tagging release 2.26.2

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Merge tag '2.26.2' into sync-2.26.2

Tagging release 2.26.2

tests/nixos/fsync.nix

@@ -0,0 +1,56 @@
+{
+  lib,
+  config,
+  nixpkgs,
+  pkgs,
+  ...
+}:
+
+let
+  pkg1 = pkgs.go;
+in
+
+{
+  name = "fsync";
+
+  nodes.machine =
+    {
+      config,
+      lib,
+      pkgs,
+      ...
+    }:
+    {
+      virtualisation.emptyDiskImages = [ 1024 ];
+      environment.systemPackages = [ pkg1 ];
+      nix.settings.fsync-store-paths = true;
+      nix.settings.require-sigs = false;
+      boot.supportedFilesystems = [
+        "ext4"
+        "btrfs"
+        "xfs"
+      ];
+    };
+
+  testScript =
+    { nodes }:
+    ''
+      # fmt: off
+      for fs in ("ext4", "btrfs", "xfs"):
+        machine.succeed("mkfs.{} {} /dev/vdb".format(fs, "-F" if fs == "ext4" else "-f"))
+        machine.succeed("mkdir -p /mnt")
+        machine.succeed("mount /dev/vdb /mnt")
+        machine.succeed("sync")
+        machine.succeed("nix copy --offline ${pkg1} --to /mnt")
+        machine.crash()
+
+        machine.start()
+        machine.wait_for_unit("multi-user.target")
+        machine.succeed("mkdir -p /mnt")
+        machine.succeed("mount /dev/vdb /mnt")
+        machine.succeed("nix path-info --offline --store /mnt ${pkg1}")
+        machine.succeed("nix store verify --all --store /mnt --no-trust")
+
+        machine.succeed("umount /dev/vdb")
+    '';
+}