Sorry, I was referring to the spec for the program, not the spec for the language.<p>And Haskell does actually have a spec[1], but almost everyone uses GHC extensions so I suppose that&#x27;s kind of moot.<p>1. <a href="https:&#x2F;&#x2F;wiki.haskell.org&#x2F;Language_and_library_specification" rel="nofollow">https:&#x2F;&#x2F;wiki.haskell.org&#x2F;Language_and_library_specification</a>