Properly import data constructors

[GuillaumeDesforges]

Your environment

Output of haskell-language-server --probe-tools or haskell-language-server-wrapper --probe-tools:

$ haskell-language-server-wrapper --probe-tools
haskell-language-server version: 0.6.0.0 (GHC: 8.10.2) (PATH: /nix/store/li7n1p632m5wkkzw7yvw4ahj2mn55c2d-haskell-language-server-0.6.0.0/bin/haskell-language-server-wrapper)
Tool versions found on the $PATH
cabal:          Not found
stack:          2.5.1
ghc:            Not found

Which lsp-client do you use: VS Code

Describe your project (alternative: link to the project):

Contents of hie.yaml:

cradle:
  stack:

Steps to reproduce

• Have some imports from a module, for example

  import Katip (permitItem)
  

• Use a data constructor (e.g. ColorIfTerminal) in the code.
• Trigger code action (e.g. "Add ColorIfTerminal to to the import list of Katip")

Expected behaviour

Imports become

import Katip (permitItem, ColorStrategy(ColorIfTerminal))

Actual behaviour

import Katip (permitItem, ColorIfTerminal)

which creates an error

[Ailrun]

Maybe related with this merged PR?
#766
I'm not sure, though.

[jneira]

@mrBliss please, could you take a quick look to confirm the bug could be related with that pr?

[mrBliss]

@mrBliss please, could you take a quick look to confirm the bug could be related with that pr?

Yes, I'll look into it.

[mrBliss]

@GuillaumeDesforges You are using haskell-language-server-0.6.0.0, which is relatively old, we're at 0.8.0.0 now. My PR, #766, was not even merged in 0.6.0.0. (It's good practice to first try to reproduce with the last release (or even HEAD) before opening an issue, the bug might have already been fixed.)

I have tried to reproduce this with a recent version, which includes my #766, and I get the following suggestion: Add ColorStrategy(ColorIfTerminal) to the import list of Katip, which is correct.

I actually think #766 didn't change this but an earlier PR did, e.g., haskell/ghcide#916.

[jneira]

@mrBliss many thanks for checking it, i should have checked the hls version before even ping you, sorry
I will wait the confirmation of @GuillaumeDesforges before closing it

[GuillaumeDesforges]

Indeed, I was using HLS from nixpkgs (e9158eca70a from 09/12, not so long ago).

I'm glad things are going so fast!

Sorry for the inconvenience,

Best