Thanks to the folks who replied! Looks like I didn't dig far enough into GNU Make. It's got a lot of the functionality I'm looking for (and I just didn't realiz

Thanks to the folks who replied! Looks like I didn't dig far enough into GNU Make. It's got a lot of the functionality I'm looking for (and I just didn't realize it). Hopefully I don't need to use it, but it even has an "eval" function for dynamically generating its own input.