some attempts

deps/third-repo/packages/z/zigcc/xmake.lua

@@ -0,0 +1,34 @@
+package("zigcc")
+    set_kind("toolchain")
+    set_homepage("https://www.ziglang.org/")
+    set_description("Zig is a general-purpose programming language and toolchain for maintaining robust, optimal, and reusable software.")
+
+    on_source(function (package)
+        local jsonfile = os.tmpfile() .. ".json"
+        import("net.http")
+        http.download("https://ziglang.org/download/index.json", jsonfile)
+        import("core.base.json")
+        local json = json.loadfile(jsonfile)["master"]
+        -- print(json)
+        if is_host("windows") then
+            -- print("Windows: " .. json["x86_64-windows"]["tarball"])
+            package:set("urls", json["x86_64-windows"]["tarball"])
+            package:add("versions", "v0.13.0", json["x86_64-windows"]["shasum"])
+        elseif is_host("linux") then
+            -- print("Linux: " .. json["x86_64-linux"]["tarball"])
+            package:set("urls", json["x86_64-linux"]["tarball"])
+            package:add("versions", "v0.13.0", json["x86_64-linux"]["shasum"])
+        else
+            print("Unsupported platform!")
+        end
+    end)
+
+    on_install("@macosx", "@linux", "@windows", "@msys", "@bsd", function (package)
+        print("Install?" .. package:installdir())
+        os.cp("*", package:installdir())
+        package:addenv("PATH", package:installdir())
+    end)
+
+    on_test(function (package)
+        os.vrun("zig version")
+    end)

xmake.lua

@@ -65,6 +65,8 @@ toolchain_end()
 
 if is_plat("linux") then
     if has_config("zig") then
+        -- add_requires("zigcc", {system = false})
+        -- set_toolchains("zigcross@zigcc", "rust")
         set_toolchains("zigcross", "rust")
         if is_host("windows") then
             set_arch("x86_64-unknown-linux-gnu")