minja: add package (#6258)

packages/m/minja/xmake.lua

@@ -0,0 +1,29 @@
+package("minja")
+    set_kind("library", {headeronly = true})
+    set_homepage("https://github.com/google/minja")
+    set_description("A minimalistic C++ Jinja templating engine for LLM chat templates")
+    set_license("MIT")
+
+    add_urls("https://github.com/google/minja.git")
+    add_versions("2025.01.31", "76f0d01779aa00b0c68f2117f6cb2c9afc3a0ca8")
+
+    add_deps("nlohmann_json")
+
+    on_install(function (package)
+        io.replace("include/minja/minja.hpp", "#include <json.hpp>", "#include <nlohmann/json.hpp>", {plain = true})
+
+        os.cp("include", package:installdir())
+    end)
+
+    on_test(function (package)
+        assert(package:check_cxxsnippets({test = [[
+            using json = nlohmann::ordered_json;
+            void test() {
+                auto tmpl = minja::Parser::parse("Hello, {{ location }}!", /* options= */ {});
+                auto context = minja::Context::make(minja::Value(json {
+                    {"location", "World"},
+                }));
+                auto result = tmpl->render(context);
+            }
+        ]]}, {configs = {languages = "c++17"}, includes = "minja/minja.hpp"}))
+    end)