haskell-language-server VS hie-bios

Indeed, there is a lot of room for improvements. But I just wanted to acknowledge and thank the work of those involved in HLS which IMHO was a game changer in that regard.

Specifically, gchup and HLS are both opensource community efforts. If you want to see HLS work with ghc-9.2.5, you may want to ask https://github.com/haskell/haskell-language-server or, better, provide them a PR that builds HLS with ghc-9.2.5.

Sadly ghcup tui is not available on windows, but you can check the available versions with ghcup list. Hls lists the compatible versions of ghc at their github releases. For 1.8.0.0 I went with 9.4.2. To install it and set it to default you have to use the ghcup install ghc 9.4.2 then the ghcup set ghc 9.4.2. Hopefully this will be useful to someone with the same problem.

Here's an issue I created for it: https://github.com/haskell/haskell-language-server/issues/3348

The code is executed by HLS, see https://github.com/haskell/haskell-language-server/blob/master/plugins/hls-eval-plugin/README.md and then its markdown/html output is displayed by VS Code.

As you can see there, Shake is also a good fit for Cabal scripts. And Cabal scripts work better in 3.8. There are still issues loading them with HLS, but hopefully not for long. For this reason, I also have a build.sh which wraps that, allowing the script to be loaded via GHC directly, but I look forward to being able to remove this.

AFAIK the latest GHC version which the haskell language server (which is what the vs code extension uses) supports is 9.2.2, so not yet, I'd say.

As far as I could see this bug is already reported. It is about stack not being able to handle multi crate project.

I believe you've bumped into this issue: https://github.com/haskell/haskell-language-server/issues/2857

You're likely going to have to set up a hie-bios file in an hie.yaml file. More info here: https://github.com/haskell/hie-bios

Look here: hie-bios (its the library used by haskell-language-server to get to know your project better, iirc).

Yeah the same happened to me with previous versions of the Haskell IDE Engine that used Stack, so I ended up with several snapshots under \~/.stack that took a lot of space. Nowadays I just install HLS, Cabal and a single HLS-supported GHC with ghcup. It's a huge difference. I think there is a Windows-supported equivalent of ghcup, but I have not used it. If you also have Stack installed, remember that you can place a [`hie.yaml`](https://github.com/mpickering/hie-bios#explicit-configuration) file in your project root that can [force HLS to use cabal](https://github.com/mpickering/hie-bios#cabal) instead of stack in your project (this was needed last time I checked, complex configurations would need tuning this file a bit, though).

You can provide an alternative stack.yaml to HLS, with the specific configuration for the ide, although you have to write down an explicit hie.yaml file, take a look to https://github.com/mpickering/hie-bios#stack

Please consider testing dev builds with the WIP new vgs-bios feature, inspired by the amazing hie-bios. It reads your project hie.yaml and supports multi-component/multi-package projects.