anchor.diff:        sha256 = "sha256-op48CCDgLHK0qV1Batz4Ln5FqBiRjlE6qHTiZgt3b6k=";
       };
   
  -    boehmgc = boehmgc_nixUnstable;
  +    boehmgc = boehmgc_nix;
   
       patches = [ installNlohmannJsonPatch ];
   
  
positive.code:       sha256 = "sha256-zdMODMLdJ0smEEzNMOoIzBxt9QWVzgMvr+pwxkhtD4g=";
      };
  
      boehmgc = boehmgc_nixUnstable;
  
      patches = [ installNlohmannJsonPatch ];
  
  
negative.code:       sha256 = "sha256-fuaBtp8FtSVJLSAsO+3Nne4ZYLuBj2JpD2xEk7fCqrw=";
      };
  
      boehmgc = boehmgc_nix_2_3;
  
      inherit storeDir stateDir confDir;
    });
  