Incremental search in import suggestion

[konn]

Currently, VSCode HLS suggests missing import in the following manner:

For now, one can push the prefix of each item of pulldown to select, but many of items share the long prefix such as import qualified ... or add imports ....
It might be good if one can filter-out the candidate by module name.

[jneira]

Afaik this should be implemented in the server (i will transfer to haskell-language-server if nobody disagree)

[ndmitchell]

The Rust extension has a single add import hint. If the import is unambiguous it inserts it. If there is a choice, it pops up a selection in the VS Code super-search bar listing the possible imports, which can be easily searched. I'd prefer that approach.

No idea whether this belongs in HLS or Ghcide - and if we go with the Rust approach, might even be in the extension itself.

[konn]

Since the extension already has an access to the completion candidates and scope of changes could stay minimal, I'm +1 for @ndmitchell's idea!

[konn]

Hmm, it seems that I misunderstood the situation.
It seems that, currently, ghcide provides each import candidate as separate code action and vscode-haskell doesn't have any access to the intermediate information of missing imports.
So, this feature needs some changes both in ghcide and vscode extension, IIUC.

[jneira]

Ok, maybe it worths to open an issue to track the needed changes in the backend

[konn]

Recently, I've found Keyboard QuickFix extension, which gives us a helm- or Command Palette-like alternative to the native QuickFix contextual menu. So I think this issue can be overcome by using such extensions (though we could provide HLS specific filtering by similar way).