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> There is a whole cottage industry of methods for your discipline of choice: Clean, SOLID, TDD, etc.

I'm not a big OOP fan, but I'm pretty sure Clean and SOLID are principles (or sets of principles), while TDD alone is a practice. I'm also not very familiar with Clean or SOLID, but I'm pretty sure they apply to Haskell as well, and I would expect that Haskell enthusiasts would ordinarily boast that Haskell allows (or encourages) them to write code that is more SOLID with less effort than other languages.

My criticism of Haskell is that there tends to be an obsession with writing the most SOLID/DRY/etc code possible at the expense of productivity. It's a code golf / ego culture.

Yes, this is cultural and not "built into the language" (quotes because I doubt there's a clear distinction between a programming language's culture and the language itself, but that's a debate for another time), but you can't unplug from the culture, because you need the ecosystem to solve any nontrivial problem (so you still have to interface with overly clever code).

Further, even if you could unplug from the culture (perhaps by writing everything in-house under your own improved culture), there are still no 'rails' that encourage naive, flat-footed, dumb code, and that's the kind of code you want 99% of the time. As far as I'm aware, there isn't even a clear standard for writing clear, naive code in Haskell.

SOLID applies only to OOP. Not using classes trivially satisfies the requirements of every letter. Hell, most design patters are trivial if you use functional programming.

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