I am using VS Code 1.68.1 on Windows 10 and have installed the Haskell language support plugin. I tried to install ghcup but the installation script just fails with no error message and the IRC channel #ghcup wasn't able to help so I've given up on ghcup and decided to handle this manually. I just installed HLS 1.7.0 and pointed VS Code at it. The problem is I get an error message from VS Code:
ghcide compiled against GHC 9.2.2 but currently using 8.6.5
This is unsupported, ghcide must be compiled with the same GHC version as the project.
Upon further investigation, this seems to be complaining that the ghcide library that's a part of HLS was built using ghc 9.2.2 but my current codebase was built (by Stack) using ghc 8.6.5. At least that's my reading of it, since the HLS page itself says that 1.7.0 is compatible with 8.6.5! So my first question is how on earth am I supposed to know what version of ghc was used to build HLS, and honestly why should I care?? And my second question is, how do I find the version of HLS that's compatible with my current ghc?
(Another option is to migrate Stack from 8.6.5 to 9.2.2 but I'm not sure exactly how to do this. It appears to be just a case of changing the resolver entry in stack.yaml which is currently resolver: lts-14.21. But what do I change it to? It looks like the most recent version of LTS is 19.14 https://www.stackage.org/lts-19.14. But I'm a bit nervous about making that change since the page says ghc 9.0.2 not 9.2.2. The entire Haskell ecosystem just seems really finicky and I'm new enough to Stack that don't want to end up with a messed up Stack config and possibly in Haskell package mismatch hell.
Can anyone offer any good solutions?