Compile time executable calling?

[Tofu Ninja]

I made a post about it a few months back and it seemed like there 
were some people who would want this, but nothing ever came of it.

The idea is basically being able to call and capture the output 
of a program at compile time, similar to a string import.

Has anyone thought about this since?

I know I for one would still love this.

-Tofu