is(typeof(mixin(X))) and __traits(compiles, mixin(X))

[Jonathan M Davis]

Is there a way to use string mixins with is(typeof(X)) and/or __traits(compiles, 
X)? As far as I can tell, if I do either of the following

is(typeof(mixin(X)))

__traits(compiles, mixin(X))

it does not mixin the string and test that for compilation but rather tests 
whether the mixin expression itself compiles. Is there way to actually test a 
mixed in string for compilation rather than the mixin expression itself?

- Jonathan M Davis