Is it possible to use a custom literate Haskell preprocessor?

[kamoshi]

I would like to use markdown-unlit as the default literate Haskell preprocessor for all standalone .lhs files. Is there a way to configure HLS, so that it uses markdown-unlit by default?

For example instead of the regular bird-style I would like to write files like this:

Some text here

```haskell
fact :: Integer -> Integer
fact 0 = 1
fact n = n * fact (n-1)
\```

Some text after

For this to work, I would probably have to pass -pgmL markdown-unlit to GHC, but I'm not sure if there is a way to do it globally, so that it is always enabled when using HLS.

[kamoshi]

I have since found that I can use a hie.yaml file to force HLS to pass command to GHC:

cradle:
  direct:
    arguments: ["-pgmL", "markdown-unlit"]

This is less than ideal in my case however, I would prefer to do this in a way that would work in every directory, regardless of whether there is a hie.yaml file or not. Perhaps by passing a setting directly to HLS via haskell-language-server command.

[soulomoon]

Cradle handles the build tools, build tools handle ghc flag. If I am not mistaken.