Add uninstallation instructions

[lukel97]

Just noticed in the traffic tab of the insights page on GitHub, one of the top links on the repository was a search for uninstall lol

We should probably include in the README some basic instructions on how to uninstall, i.e. just deleting ~/.local/bin/haskell-language-server* or ~/.cabal/bin/haskell-language-server*

[jneira]

We should add instructions on how to clean the executables downloaded by the vscode extension

[lichever]

Hi, do you know how to uninstall Haskell-language-server? I mean is it just to remove all files ~/.local/bin/haskell-language-server* and ~/.cabal/bin/haskell-language-server* ?

[jneira]

It depends on how you install it: with cabal install from hackage or source, stack install from source, ghcup, automatic downloaded binaries by the vscode extension...
If you have used one method to install the paths would be those ones, yeah

[lichever]

Hi @jneira, Thanks! I am new to Haskell. When installing Haskell by using ghcup( curl --proto '=https' --tlsv1.2 -sSf https://get-ghcup.haskell.org | sh ), there was a prompt for installing the Haskell-language-server and then I installed it. I am not sure if I can use the way posted here to uninstall it?

[jneira]

It seems there is a ghcup rm xxx that should do what do you want, with ghcup rm haskell-language-server i guess. I cant check locally cause i am on windows 🙂

[lichever]

@jneira Thanks a lot! It seems it works.

[fendor]

Since GHCup now takes care of the installation and is transparent in how to do it, and the install script has been deleted, so there should be no ambiguity left