haskell/haskell-language-server

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Official Haskell IDE support via the language server protocol (LSP)

Stars: 3k
Forks: 455
Open beginner issues: 0
Indexed issues: 494
Avg merge: 2d 19h
Merged PRs (30d): 11

Dominant language: Haskell
License: Apache-2.0
Last GitHub push: Sep 12, 2026
Latest indexed: Sep 14, 2026
Contributing guide: No contributing guide
Code of conduct: Code of conduct
Beginner labels: No beginner labels indexed

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494 open issues indexed

Can not go to definition of non local libraries (i.e. dependencies) Open

component: ghcide level: hard priority: high type: enhancement

haskell/haskell-language-server#708 · 28 comments · 43 reactions · 0 assignees · Indexed Sep 14, 2026
Type information for arbitrary portions of code Open

component: ghcide level: hard priority: high type: enhancement

haskell/haskell-language-server#709 · 15 comments · 13 reactions · 0 assignees · Indexed Sep 14, 2026
Filling type holes can create incomplete signatures due to type variables from context Open

component: ghcide status: needs info type: bug

haskell/haskell-language-server#711 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 14, 2026
Add garbage collect of diagnostics Open

component: ghcide performance type: enhancement

haskell/haskell-language-server#713 · 6 comments · 0 reactions · 1 assignee · Indexed Sep 14, 2026
Only report typed holes errors/warnings if no other errors remain Open

component: ghcide status: needs info type: enhancement

haskell/haskell-language-server#715 · 8 comments · 0 reactions · 0 assignees · Indexed Sep 14, 2026
Implement source.organizeImports code action Open

component: ghcide type: enhancement

haskell/haskell-language-server#719 · 4 comments · 0 reactions · 0 assignees · Indexed Sep 14, 2026
Inferred types for polymorphic functions sometimes produce `Any` instead of type variables Open

component: ghcide-type-lenses type: enhancement

haskell/haskell-language-server#806 · 10 comments · 1 reaction · 0 assignees · Indexed Sep 14, 2026
Delay server processing: on save, set a configurable delay Open

component: ghcide component: lsp level: hard performance

haskell/haskell-language-server#808 · 16 comments · 1 reaction · 0 assignees · Indexed Sep 14, 2026
Hover on inner signature gives confusing information Open

component: ghcide type: enhancement

haskell/haskell-language-server#767 · 5 comments · 1 reaction · 0 assignees · Indexed Sep 14, 2026
Problem starting ghcide on Windows and non english locale Open

can-workaround os: windows type: bug

haskell/haskell-language-server#809 · 18 comments · 0 reactions · 0 assignees · Indexed Sep 14, 2026
Improve the command line experience Open

component: cli type: enhancement

haskell/haskell-language-server#804 · 2 comments · 0 reactions · 0 assignees · Indexed Sep 14, 2026
[new plugin] Add explicit export lists to each module using the minimal import lists Open

type: enhancement

haskell/haskell-language-server#450 · 13 comments · 0 reactions · 0 assignees · Indexed Sep 14, 2026
Unload module from GHC session after a source file is renamed/moved/deleted Open

component: ghcide type: bug

haskell/haskell-language-server#792 · 4 comments · 4 reactions · 0 assignees · Indexed Sep 14, 2026
Is disabling idle GC measurably better? Open

performance type: enhancement

haskell/haskell-language-server#788 · 4 comments · 0 reactions · 0 assignees · Indexed Sep 14, 2026
support for cabal/stack scripts Open

build tool: cabal build tool: stack can-workaround status: blocked type: enhancement

haskell/haskell-language-server#111 · 34 comments · 10 reactions · 0 assignees · Indexed Sep 14, 2026
Add actions to control the build tool throug hls Open

build tool: cabal build tool: stack type: enhancement

haskell/haskell-language-server#113 · 7 comments · 0 reactions · 0 assignees · Indexed Sep 14, 2026
stack cradle fails to load private lib Open

build tool: stack component: hie-bios status: blocked type: bug

haskell/haskell-language-server#114 · 7 comments · 0 reactions · 0 assignees · Indexed Sep 14, 2026
Wrong `could not execute: tasty-discover` (revisit after haskell/hie-bios#187) Open

build tool: cabal can-workaround component: hie-bios status: blocked type: bug

haskell/haskell-language-server#176 · 14 comments · 11 reactions · 0 assignees · Indexed Sep 14, 2026
Check types of missing definition in add import quick suggestions Open

component: ghcide type: enhancement

haskell/haskell-language-server#754 · 14 comments · 9 reactions · 0 assignees · Indexed Sep 14, 2026
Hover docs including links for dependencies Open

can-workaround component: plugins type: enhancement

haskell/haskell-language-server#208 · 22 comments · 0 reactions · 0 assignees · Indexed Sep 14, 2026
Don't show "Progress: x/y" messages until the session/cradle has been setup Open

component: ghcide component: lsp type: enhancement

haskell/haskell-language-server#752 · 6 comments · 0 reactions · 0 assignees · Indexed Sep 14, 2026
Typed holes always appear as errors, even when deferred Open

component: ghcide type: bug

haskell/haskell-language-server#256 · 6 comments · 0 reactions · 0 assignees · Indexed Sep 14, 2026
display info on hover not working when ambiguous definition occurs Open

status: in discussion

haskell/haskell-language-server#273 · 2 comments · 0 reactions · 0 assignees · Indexed Sep 14, 2026
Retrie: automatically add imports when unfolding Open

component: hls-retrie-plugin type: enhancement

haskell/haskell-language-server#279 · 0 comments · 0 reactions · 1 assignee · Indexed Sep 14, 2026
Retrie: add support for pattern synonyms Open

component: hls-retrie-plugin type: enhancement

haskell/haskell-language-server#280 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 14, 2026
Retrie: handle names properly (revisit after facebookincubator/retrie#10) Open

component: hls-retrie-plugin status: blocked type: enhancement

haskell/haskell-language-server#281 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 14, 2026
Retrie: add support for multiple workspace folders Open

component: hls-retrie-plugin type: enhancement

haskell/haskell-language-server#283 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 14, 2026
Unparseable retrie output Open

component: hls-retrie-plugin type: bug

haskell/haskell-language-server#307 · 1 comment · 0 reactions · 0 assignees · Indexed Sep 14, 2026
Should we ignore `-Werror` in HLS? Open

component: ghcide status: needs info type: bug

haskell/haskell-language-server#853 · 7 comments · 0 reactions · 0 assignees · Indexed Sep 14, 2026
GHCJS Compatibility? Open

type: enhancement

haskell/haskell-language-server#349 · 10 comments · 1 reaction · 0 assignees · Indexed Sep 14, 2026
`Could not load module`/`Cannot satisfy -package` error for exe/test/bench component whose main lib doesn't build or was not built Open

build tool: stack component: hie-bios multi-component status: blocked type: bug

haskell/haskell-language-server#366 · 41 comments · 17 reactions · 0 assignees · Indexed Sep 14, 2026
Enhance simple eval plugin to allow evaluating within scope of functions Open

component: hls-eval-plugin type: enhancement

haskell/haskell-language-server#368 · 2 comments · 4 reactions · 0 assignees · Indexed Sep 14, 2026
Encourage space-leak correct value storage Open

component: ghcide performance type: enhancement

haskell/haskell-language-server#749 · 1 comment · 1 reaction · 0 assignees · Indexed Sep 14, 2026
Incorrect highlighting in hover in VS Code Open

component: ghcide type: bug

haskell/haskell-language-server#389 · 3 comments · 0 reactions · 0 assignees · Indexed Sep 14, 2026
Add Haddock hyperlinks to hover for type holes Open

component: ghcide type: enhancement

haskell/haskell-language-server#390 · 5 comments · 0 reactions · 0 assignees · Indexed Sep 14, 2026
Give the user a choice of implicit cradle (cabal, stack, etc) if there is more than one Open

component: implicit-hie level: easy type: enhancement

haskell/haskell-language-server#742 · 9 comments · 0 reactions · 0 assignees · Indexed Sep 14, 2026
Add regression tests for haskell/ghcide#800 Open

type: enhancement

haskell/haskell-language-server#740 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 14, 2026
Document architecture and relationship between component projects Open

type: bug type: enhancement

haskell/haskell-language-server#409 · 21 comments · 7 reactions · 0 assignees · Indexed Sep 14, 2026
Coherence of command-line formatters versus formatter plugins Open

component: formatters Hackathon type: enhancement

haskell/haskell-language-server#411 · 25 comments · 12 reactions · 0 assignees · Indexed Sep 14, 2026
Syntax highlighting in doctest comments? Open

component: lsp status: blocked type: enhancement

haskell/haskell-language-server#1535 · 5 comments · 5 reactions · 0 assignees · Indexed Sep 14, 2026
Incremental search in import suggestion Open

can-workaround component: imports plugin type: enhancement

haskell/haskell-language-server#1764 · 6 comments · 0 reactions · 0 assignees · Indexed Sep 14, 2026
Apply nothunks to ghcide and dependencies Open

Hackathon level: easy performance type: enhancement

haskell/haskell-language-server#736 · 1 comment · 5 reactions · 0 assignees · Indexed Sep 14, 2026
Prioritize "Use Type Signature" action when available Open

component: ghcide type: enhancement

haskell/haskell-language-server#457 · 4 comments · 2 reactions · 0 assignees · Indexed Sep 14, 2026
Codelens eval should not interact with IO Open

component: hls-eval-plugin type: enhancement

haskell/haskell-language-server#461 · 4 comments · 0 reactions · 0 assignees · Indexed Sep 14, 2026
Feature Request: Automatic Expansion of uninitialized record fields Open

component: ghcide Hackathon level: easy type: enhancement

haskell/haskell-language-server#462 · 19 comments · 3 reactions · 1 assignee · Indexed Sep 14, 2026
Unify "import action" and "import code lens" behaviour Open

component: ghcide type: enhancement

haskell/haskell-language-server#487 · 2 comments · 3 reactions · 0 assignees · Indexed Sep 14, 2026
Hover Documentation html file should be looked up from Haddock interfaces Open

component: ghcide type: enhancement

haskell/haskell-language-server#731 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 14, 2026
"Add .. to the context of the instance declaration" code action code gen doesn't work with standalone deriving declarations Open

component: ghcide component: hls-class-plugin Hackathon type: bug

haskell/haskell-language-server#489 · 1 comment · 0 reactions · 0 assignees · Indexed Sep 14, 2026
Local compiler plugin cannot be loaded in ghcide even with `-fobject-code` Open

component: ghcide type: bug

haskell/haskell-language-server#730 · 1 comment · 1 reaction · 0 assignees · Indexed Sep 14, 2026
Suggestions or actions to use type synonyms Open

type: enhancement

haskell/haskell-language-server#506 · 5 comments · 2 reactions · 0 assignees · Indexed Sep 14, 2026

haskell/haskell-language-server

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