conan package problem.

[thegoodtgg]

xmake seems could not generate valid profile for conan when using msvc toolset in some situation.
I am using Visual Studio 17.4.2, and I have msvc toolset 14.42, 14.43, 14.44(which is latest) installed. I config my xmake project with "--vs_toolset=14.42" option, however when install conan package, it does not use 14.42 toolset.
After some digging, I find out https://github.com/xmake-io/xmake/blob/dev/xmake/modules/package/manager/conan/v2/install_package.lua this file does not generate "compiler.update" for conan profile, as conan doc https://docs.conan.io/2/reference/config_files/settings.html#msvc saied.