libnpy: add package (#2667)

packages/l/libnpy/xmake.lua

@@ -0,0 +1,27 @@
+package("libnpy")
+    set_kind("library", {headeronly = true})
+    set_homepage("https://github.com/llohse/libnpy")
+    set_description("C++ library for reading and writing of numpy's .npy files")
+    set_license("MIT")
+
+    add_urls("https://github.com/llohse/libnpy/archive/refs/tags/$(version).tar.gz",
+             "https://github.com/llohse/libnpy.git")
+
+    add_versions("v1.0.1", "43452a4db1e8c1df606c64376ea1e32789124051d7640e7e4e8518ab4f0fba44")
+
+    on_install(function (package)
+        os.cp("include", package:installdir())
+    end)
+
+    on_test(function (package)
+        assert(package:check_cxxsnippets({test = [[
+            #include <vector>
+            #include <string>
+            #include <npy.hpp>
+            void test() {
+                const std::string path {"data.npy"};
+                npy::npy_data d = npy::read_npy<double>(path);
+                std::vector<double> data = d.data;
+            }
+        ]]}, {configs = {languages = "c++17"}}))
+    end)