Why We Built a Haskell Package Manager in Rust

I read the article, but I do not understand what they are trying to achieve.

It seems like a thin wrapper around various tools, so that I only ever have to interface with one cli app.

There’s some confusing optimization claims, e.g. they circumvent cabal when there are only boot dependencies (probably just running ghc --make). How does that even work with cabal.project files?

Now there’s also yet another custom config format, which seems to rather add to the fragmentation than remove it.