What I want to do are shown as the following two pictures:
My needs are:
（1）build framework for MacOS Apps;
（2）complie .metallib to accelerate shader init;
（3）frameworks can be used in old MacOS Version which only use Metal 1 Features ;
（4）frameworks use new Metal 2 Features in new MacOS Version and M1 Silicon.
I have konwn：
（1）while setting Deployment Target, MSL will adjust to corresponding version. But this design can't meet my needs, so I made the above settings.
（2）Apple have post a doucument Detecting GPU Features and Metal Software Versions on this issue , but not fully solved my concern.
My concern is：
（1）Can the .metallib complied by high version MSL be loaded by old version MacOS?
（2）Will App Store refuse the MacOS APP use this kind of setting？
Help:
Can you tell me is right to do these setting, or give me a better solution? Thanks!