Rattlesnake is actually pretty good. I also like CrabML but I wouldn't expect that to be popular though. In general, I don't love Rust's choice of sigils (::,

Rattlesnake is actually pretty good. I also like CrabML but I wouldn't expect that to be popular though. In general, I don't love Rust's choice of sigils (::, <>, etc), but the language reads well enough. That inner/outer function thing is legit the compiler model leaking into user code though.