Lots of languages have different assumptions about which edge cases you must handle or are handled automatically for you, or what restrictions you have. How do

Lots of languages have different assumptions about which edge cases you must handle or are handled automatically for you, or what restrictions you have. How do you account for a language which allows memory management or not? One that has higher- vs. lower-level threading APIs? These can be handled, but consider the complexity necessary to do so for only a single language. Then, imagine the thousands of other things you can't call to mind until you hit them as a crazy edge case trying to do this. While it may be theoretically possible, this means such a model is probably not the best tool to do this.