can they be interleaved?

bonus points for capping the length silently.

it’s tune-2fs, right

Hence the need to build themselves. It boils down to: download the source, install the dependencies, (configure,) compile, install. In this case, you need make/cmake. You could also crosscompile (on another machine), but that’s trickier. If you’ve never compiled something yourself, maybe start with a known-good configuration from your distribution’s sources.