The omission of where clauses was explicitly a stylistic choice[1].
This is perfectly valid Haskell:
#!/usr/bin/env stack
{- stack script --resolver lts-12.19 -}
data Test = Test {count :: Int}
test = let
something = Test {
count = 5
}
in 5+(count something)
main = putStrLn $ show test
To get the equivalent Elm to compile, it must be indented like this:
test = let
something = {
count = 5
}
in 5+(something.count)
Note that `something` must be indented beyond the beginning of `let`, and the closing curly brace must be indented to the same level as `count`. These are both not a warning, but a parse error - you can confirm it with Ellie[2]. If that were due to a lack of resources, it would absolutely be understandable, but this also was an explicit choice[3] which developer time was spent implementing.
This is perfectly valid Haskell:
To get the equivalent Elm to compile, it must be indented like this: Note that `something` must be indented beyond the beginning of `let`, and the closing curly brace must be indented to the same level as `count`. These are both not a warning, but a parse error - you can confirm it with Ellie[2]. If that were due to a lack of resources, it would absolutely be understandable, but this also was an explicit choice[3] which developer time was spent implementing.[1] https://github.com/elm/compiler/issues/621
[2] https://ellie-app.com/5KRg4g5ZMkba1
[3] https://github.com/elm/compiler/issues/1573