How do I get the include directory of a package?

[Release-Candidate]

I have tried package:get("includedirs"), but that doesn't work. But the package does set the correct include directory, as the correct include directory is used when building the target.

What is working:

target("c-test")
    set_kind("binary")
    add_packages("cmocka", {public = true})
    add_files("test/*.c")
    on_load(function(target)
       for _, pkg in pairs(target:orderpkgs()) do
          print(pkg:name())
          print(pkg:get("version"))
          print(pkg:get("envs"))
          print(pkg:get("installdir"))
	  for _, linkdir in pairs(pkg:get("linkdirs")) do
              printf("linkdir: %s\n", linkdir)
          end
          for _, lib in pairs(pkg:get("links")) do
            printf("lib short: %s\n", lib)
          end
          for _, lib in pairs(pkg:get("libfiles")) do
            printf("lib long: %s\n", lib)
          end
       end
    end)

yields

cmocka
1.1.7
{ 
  PATH = { 
    "/Users/roland/.xmake/packages/c/cmake/3.30.2/921ba545fcc04f5e9f8e40feacab1d46/bin" 
  },
  DYLD_LIBRARY_PATH = { 
    "/Users/roland/.xmake/packages/c/cmocka/1.1.7/930608eb330f4f47b5699420a9624618/lib",
    "/Users/roland/.xmake/packages/c/cmake/3.30.2/921ba545fcc04f5e9f8e40feacab1d46/lib" 
  },
  LD_LIBRARY_PATH = { 
    "/Users/roland/.xmake/packages/c/cmocka/1.1.7/930608eb330f4f47b5699420a9624618/lib",
    "/Users/roland/.xmake/packages/c/cmake/3.30.2/921ba545fcc04f5e9f8e40feacab1d46/lib" 
  } 
}

/Users/roland/.xmake/packages/c/cmocka/1.1.7/930608eb330f4f47b5699420a9624618
linkdir: /Users/roland/.xmake/packages/c/cmocka/1.1.7/930608eb330f4f47b5699420a9624618/lib
lib short: cmocka
lib long: /Users/roland/.xmake/packages/c/cmocka/1.1.7/930608eb330f4f47b5699420a9624618/lib/libcmocka.dylib
lib long: /Users/roland/.xmake/packages/c/cmocka/1.1.7/930608eb330f4f47b5699420a9624618/lib/libcmocka.0.8.0.dylib
lib long: /Users/roland/.xmake/packages/c/cmocka/1.1.7/930608eb330f4f47b5699420a9624618/lib/libcmocka.0.dylib

[waruqi]

          print(pkg:get("sysincludedirs") or pkg:get("includedirs"))

/usr/local/Cellar/cmocka/1.1.5/include

[Release-Candidate]

Thanks, sysincludedirs is it!