With the annoying number of systems that don't have boost installed, such projects are forced to accommodate (by shipping with their own). After the accommodati

With the annoying number of systems that don't have boost installed, such projects are forced to accommodate (by shipping with their own). After the accommodations are made, there's little reason to allow for the usage of the system's boost. Similarly, color_coded downloads its own clang. Why? 1) People may not have clang installed (like boost) 2) (more importantly) color_coded is tested and proven to work with a specific version; it's more portable this way If we suddenly allow users to use system-level boost and clang and foobar implementations instead of that which we ship, we're also opening a can of worms for incompatibilities. The amount of coverage that needs to be tested grows surprisingly quickly.