1 files changed, 1 insertions, 0 deletions

diff --git a/custom/trivmix-service.nix b/custom/trivmix-service.nix
index 09a6dd3b..5e0e5b47 100644
--- a/custom/trivmix-service.nix
+++ b/custom/trivmix-service.nix
@@ -33,6 +33,7 @@ let
         --prefix PATH : ${jack2Full}/bin
     '';
   };
+  inherit (stdenv.lib) optionalString;
 in rec {
   out = {
     wantedBy = [ "sound.target" ];