···

       
65
       
65
       
 
       
      };

     

       
66
       
66
       
 
       


     

       
67
       
67
       
 
       
      nice = lib.mkOption {

     

       
68
       
68
       
-
       
        type = lib.types.nullOr lib.types.int;

     

       
68
       
68
       
+
       
        type = lib.types.nullOr (lib.types.ints.between (-20) 19);

     

       
69
       
69
       
 
       
        default = null;

     

       
70
       
70
       
 
       
        description = ''

     

       
71
       
71
       
 
       
          Niceness of the compilation tasks.