python315: 3.15.0a3 -> 3.15.0a4 (#479885)

        major = "3";

        minor = "15";

        patch = "0";

        suffix = "a3";

        suffix = "a4";

      };

      hash = "sha256-arAs2sJFBXeYd7sdkYlDLWfpDd8qm4t7Nz6tVKwHtgc=";

      hash = "sha256-oKUh1cSAuJl52hrvzil1DrFYEowBeHKOv+91EcIbTnc=";

      inherit passthruFun;

    };