[pagghiu]

I could bring multiple examples, but just to make one CMake, what I think today is the most popular way of describing builds in c++, describes builds in an imperative language.

https://en.wikipedia.org/wiki/CMake#CMakeLists.txt

Most "declarative" build systems are not actually what they "declare" to be. I've seen too many DSLs introducing half backed imperative concepts here and there to do _if_ and _for_ constructs or function calls, redoing the same as imperative languages but poorly.