1 files changed, 2 insertions, 0 deletions

diff --git a/flakes/files-watcher/flake.nix b/flakes/files-watcher/flake.nix
index 29ea428..3be566d 100644
--- a/flakes/files-watcher/flake.nix
+++ b/flakes/files-watcher/flake.nix
@@ -2,6 +2,8 @@
   description = "Module to watch fo file changes to force restart systemd service";
   outputs = { self }: {
     nixosModule = { config, lib, pkgs, ... }: let cfg = config.services.filesWatcher; in with lib; {
+      # Necessary for situations where flake gets included multiple times
+      key = builtins.hashString "sha256" (builtins.path { path = self.sourceInfo.outPath; name = "source"; });
       options = {
         services.filesWatcher = with lib.types; mkOption {
           default = {};