vscode-ghc-simple VS vim-awesome

I created vscode-ghc-simple, which is a VSCode extension that provides editor tooling using only GHCi. It interacts with GHCi using text I/O, especially with the features that use :set +c to provide expression type information and go to definition.

Im not sure haskell language server works with reflex right now (haven't used reflex recently). You may ask on IRC or maybe try https://github.com/dramforever/vscode-ghc-simple (haven't used it recently either). For ghcid, I don't think it supports reloading across packages, you can try something like what I did here https://github.com/aveltras/blog-reflex/blob/master/blog-reflex.cabal (basically, having only one cabal file for the whole project and two executable client and server both having two source directories, so during development, you'd only work with ghcid on the server part, putting most of the code that can work on both environment in the common directory).

I encourage you to add plugins to your vim (tip: use vim-plug). Use vimawesome.com for inspiration.

I don't have a solution for each one of your points, but I'm going to point out a couple that are very useful for me at least (most of these can be found on a site like vimawesome or just native configuration/usage).

Vim Awesome. This is probs the best resource for text editor related plugins for vim. Browse around the site and see what looks like it would work for you. Fugitive, NerdTree, Syntastic, and surround are pretty great for utility.

Get inspired and find your new plugins at https://vimawesome.com/

I originally landed on https://neovimcraft.com because of https://vimawesome.com

then linked to a very useful guide and repository of plugins

Vim is infinitely customizable. While Vscode allows you to change the app’s color scheme, install plugins, and change a few app settings, Vim offers you complete control over the editor’s experience. You have thousands of plugins to choose from. You can completely remap any keybinding and create new shortcuts for tasks in your daily workflow. And giving you more power as a developer, you can completely reprogram or automate your Vim experience with the built-in Vimscript language or Lua for Neovim.