sv_pkg4.sv

package my_pkg1;
  int unsigned a = 1;
endpackage : my_pkg1

package my_pkg2;
  import my_pkg1 :: *;
  int unsigned b = 2;
  
  function void pkg2_print();
    $display("my_pkg2 : pkg2_print : my_pkg1::a = %0d,  my_pkg2::b = %0d", a, b);
  endfunction : pkg2_print
endpackage : my_pkg2

module top4();
  import my_pkg2 :: *;
  initial begin
    void '(pkg2_print());
  end
endmodule : top4

//Output:
// my_pkg2 : pkg2_print : my_pkg1::a = 1,  my_pkg2::b = 2