I don't see a reason that a DSL can't be Turing complete and still a better option than an existing language. If you look at old-school make files, they are lit

I don't see a reason that a DSL can't be Turing complete and still a better option than an existing language. If you look at old-school make files, they are little more than shell script with top level rules that you can invoke from the command line. You could theoretically just use shell script but the make scripts still simplify the task quite a bit.