libenvpp: add package (#2329)

packages/l/libenvpp/xmake.lua

@@ -0,0 +1,35 @@
+package("libenvpp")
+    set_homepage("https://github.com/ph3at/libenvpp")
+    set_description("A modern C++ library for type-safe environment variable parsing")
+    set_license("Apache-2.0")
+
+    add_urls("https://github.com/ph3at/libenvpp/archive/refs/tags/$(version).tar.gz",
+             "https://github.com/ph3at/libenvpp.git")
+
+    add_versions("v1.1.0", "c373a6867ed915ffdacbbebfa017e03c0797dc4c2eb173659f607024e9cfbac9")
+
+    add_configs("shared", {description = "Build shared binaries.", default = false, type = "boolean", readonly = true})
+
+    add_deps("cmake")
+    add_deps("fmt >=9.1.0", {configs = {header_only = false}})
+
+    on_install(function (package)
+        local configs = {"-DLIBENVPP_EXAMPLES=OFF", "-DLIBENVPP_TESTS=OFF", "-DLIBENVPP_INSTALL=ON"}
+        table.insert(configs, "-DCMAKE_BUILD_TYPE=" .. (package:debug() and "Debug" or "Release"))
+        table.insert(configs, "-DBUILD_SHARED_LIBS=" .. (package:config("shared") and "ON" or "OFF"))
+        table.insert(configs, "-DLIBENVPP_CHECKS=" .. (package:is_debug() and "ON" or "OFF"))
+        import("package.tools.cmake").install(package, configs)
+        os.rm(package:installdir("include/fmt"))
+        os.rm(package:installdir("lib/pkgconfig"))
+        os.rm(package:installdir("lib/cmake/fmt"))
+        os.rm(package:installdir("lib/fmt*"))
+    end)
+
+    on_test(function (package)
+        assert(package:check_cxxsnippets({test = [[
+            #include <libenvpp/env.hpp>
+            void test() {
+                auto pre = env::prefix("MYPROG");
+            }
+        ]]}, {configs = {languages = "c++17"}}))
+    end)