This is the typical use case for a language server. I have haskell-language-server installed and use it extensively on GHC for stuff like jump to definition and immediate compilation feedback.
I would *love* to be doing this. I have had HLS installed on my machine for months, and have been using with Emacs. But to say I have trouble getting it work as advertised is an understatement. For example, on the module I'm trying to diagnose, I'm getting just one error message, on the first line: Data.Binary.Get.runGet at position 1844: not enough bytes
There's also "jump to next error" if you want that.
I can't find it using either "C-h f" or using the list of keybindings at https://emacs-lsp.github.io/lsp-mode/page/keybindings/. I think it might be supported by flycheck, but "C-x `" simply says "No more Flycheck errors." In general, my experience is "sometimes it works and sometimes it doesn't." Even for things as simple as "M-." (find definition). If you know of any resources on using HLS with GHC, I'd love to be directed. For example, when Emacs asks if I really want to watch circa 5,000 directories, do I say "yes"?
The hour or so I invested on initial setup has probably saved me several days already.
I am **so eager** to get there. But definitely not there yet. Norman