As someone who uses rust a fair amount, I can say that the syntax looks pretty normal to me. It's saying "only define this field if we're compiling on windows." I parsed that out immediately.

Maybe it just takes a bit of familiarity with the language, but everything does fit together really well after the initial learning phases.

Could you be constructive and say what, specifically, you dislike about it? Do you fully understand what each component means?

It is quite useful sometimes: https://github.com/tox-rs/tox-node/blob/master/src/node_conf...