In my eyes this is really awful. Furthermore, if you move the first entry in the last place as is you get a syntax error. So it has all the disadvantages of the

In my eyes this is really awful. Furthermore, if you move the first entry in the last place as is you get a syntax error. So it has all the disadvantages of the code without trailing commas, plus it makes your eyes bleed if you are used to read pretty much anything apart Haskell code.