coqPackages.serapi: 8.17.0+0.17 -> 8.18.0+0.18

let

  release = {

    "8.18.0+0.18.0".sha256 = "sha256-c+3yG9vcbek/uvQ27OOQGqqsIHU1VuQhQvNVOjfucbo=";

    "8.17.0+0.17.0".sha256 = "sha256-I81qvaXpJfXcbFw8vyzYLzlnhPg1QD0lTqAFXhoZ0rI=";

    "8.16.0+0.16.3".sha256 = "sha256-22Kawp8jAsgyBTppwN5vmN7zEaB1QfPs0qKxd6x/7Uc=";

    "8.15.0+0.15.0".sha256 = "1vh99ya2dq6a8xl2jrilgs0rpj4j227qx8zvzd2v5xylx0p4bbrp";

  defaultVersion =  with versions;

    lib.switch coq.version [

      { case = isEq "8.18"; out = "8.18.0+0.18.0"; }

      { case = isEq "8.17"; out = "8.17.0+0.17.0"; }

      { case = isEq "8.16"; out = "8.16.0+0.16.3"; }

      { case = isEq "8.15"; out = "8.15.0+0.15.0"; }