Add package randx 1.4.2

packages/r/randx/xmake.lua

@@ -0,0 +1,40 @@
+package("randx")
+    set_homepage("https://github.com/lidaixingchen/RandX")
+    set_description("Modern, fast, and header-only C++ pseudo-random number generator and distribution library (C++17/C++23).")
+    set_license("MIT")
+
+    add_urls("https://github.com/lidaixingchen/RandX/archive/refs/tags/v$(version).tar.gz")
+
+    add_versions("1.4.0", "ecf611c6f340986df2abf3191def2222a3287f5e20ec4280c88996770a95eec7")
+    add_versions("1.3.1", "f271bbcb26bea7747ee292646df895c2305b696bb0d58d69b54e84fe96fab3c1")
+
+    on_load(function (package)
+        package:set("kind", "library", {headeronly = true})
+
+        -- 跨平台 OS 熵源链接（ChaCha20 CSPRNG 需要）
+        -- Windows: BCryptGenRandom → bcrypt
+        -- macOS:   SecRandomCopyBytes → Security framework
+        -- Linux:   getrandom → libc 内置，无需额外链接
+        if package:is_plat("windows", "mingw") then
+            package:add("syslinks", "bcrypt")
+        elseif package:is_plat("macosx") then
+            package:add("syslinks", "Security")
+        end
+    end)
+
+    on_install(function (package)
+        -- 仅安装两个头文件到 include/
+        os.cp("RandX.hpp", package:installdir("include"))
+        os.cp("RandX_Cpp17.hpp", package:installdir("include"))
+    end)
+
+    on_test(function (package)
+        assert(package:check_cxxsnippets({test = [[
+            #include <RandX.hpp>
+            #include <cstdint>
+            static void test() {
+                std::uint64_t v = RandX::RandInt<std::uint64_t>(0, 1000);
+                (void)v;
+            }
+        ]]}, {configs = {languages = "c++23"}}))
+    end)