It is the language. The module system is both semantically indispensable and a second class citizen. It's another language, implemented on top of Nix. Once you have a userland "if" reimplemented in your language you know you're in a bad place. (`mkIf`)

Maybe lazy evaluated attrsets can help make a dent, but still the lack of static types for module code is beyond painful. It's hostile.

I believe Nix is worth it in spite of this, and I'll advise anyone to learn it, it truly is the way forward, but by god do I hope it's not the last step on this journey. Please, Lord, please don't let nixlang be the final iteration XD