Changelog for vscode-haskell

February 24, 2026 · View on GitHub

2.8.0

Migrate project to npm 11.9.0 (#1336) by @fendor
Standardized LICENSE for vscode-haskell (#1290) by @Shubhashish-Chakraborty

2.7.0

Introduce the StatusBarItem (#1237) by @fendor

2.6.1

Prefer the set version for cabal and stack if there is any (#1275) by @fendor
Make js debugger work (#1258) by @dyniec
Prepare release 2.6.0 (#1103) by @fendor

2.6.0

Add option to enable/disable .cabal file support (#1223) by @fendor
Upgrade project to use latest eslint version (#1150) by @fendor
Fix windows CI (#1149) by @fendor
Manually install ghcup into image (#1119) by @fendor
bump vscode-languageclient version to 9.0.1 (#1108) by @jetjinser
Add cabalFormattingProvider to package.json (#1100) by @fendor

2.5.3

Split out packaging action (#1080) by @fendor
Add Session Loading style to list of known configs (#1077) by @fendor
Tooling update (#1043) by @bzm3r
Add haskell.plugin.fourmolu.config.path option (#987) by @georgefst

2.5.0

Add tracking of cabal files (#618) by @fendor

2.4.3

Address invalid byte sequence error #1022 (#1022) by @felixlinker
Always set the cwd for the executable (#1011) (#1011) by @fendor

2.4.2

Add stan plugin option #1000 (#1000) by @fendor
Probe for GHCup binary wrt #962 (#963) by @hasufell
Bump old hls version and upgrade test runner to macos-latest (#960) by @July541
Increase time limitation to make test on Windows more stable (#959) by @July541
Update release docs for refreshing CI tokens (#942) by @fendor

2.4.1

Downgrade vscode-languageclient (#934) by @fendor
Bump vscode to 1.80.0 (#912) by @July541

2.4.0

Prepare release 2.4.0 (#906) by @VeryMilkyJoe
Simplify tests (#904) by @July541
Remove unused code (#898) by @fendor
Remove hoogle command from vscode extension (#896) by @fendor
Update readme (#886) by @VeryMilkyJoe
Fix broken tests (#880) by @July541
Update README.md: clarify how to use Stack with vscode-haskell extension (#874) by @miguel-negrao
Remove debugger tools from CI (#873) by @fendor
Refactor tests to work correctly (#872) by @July541
Downgrade vscode language client to 7.0.0 (#853) by @fendor
Update badge url for VSCode Marketplace (#851) by @fendor

2.2.4

Downgrade vscode language client to 7.0.0 (#843) by @fendor

2.2.3

Prepare release 2.2.3 (#843) by @fendor
Add new plugins fields (#842) by @fendor
- Migrate to eslint (#782) by @fendor
Bump minor versions of package dependencies (#781) by @fendor
Update unsupported GHC doc link (#776) by @limaak
Fix release CI (#775) by @fendor
Fix mistake in generated ChangeLog (#774) by @fendor

2.2.2

Add link to HLS installation webpage (#751) by @fendor
Change scope of serverExecutablePath to machine-overridable (#742) by @fendor
Add Fourmolu config property (#736) by @georgefst
Add missing configuration options for the latest HLS version (#717) by @fendor
Change sensible to sensitive (#709) by @ploeh

2.2.1

Fix test-suite for new GHCUp release (#672) by @fendor
Bump webpack from 5.73.0 to 5.74.0 (#657) by @fendor
Bump typescript from 4.4.0 to 4.7.4 (#657) by @fendor
Bump @types/node from 18.0.4 to 18.6.1 (#657) by @fendor
Bump @typescript-eslint/eslint-plugin from 5.30.6 to 5.31.0 (#657) by @fendor
Bump @typescript-eslint/parser from 5.30.6 to 5.31.0 (#657) by @fendor
Bump prettier from 2.6.2 to 2.7.1 (#657) by @fendor
Bump mocha from 9.2.1 to 10.0.0 (#657) by @fendor
Add dependabot.yml (#633) by @fendor
Replace x32 with ia32 for Architecture matching (#631) by @fendor
Toolchain management dialog: add hint for beginners (#621) by @runeksvendsen
Fix trace.server option (#617) by @coltenwebb
Add TOC (#615) by @hasufell
Cleanups (#605) by @hasufell
Link to VSCode settings page (#603) by @hasufell
Refactor toInstall shenanigans (#600) by @hasufell
Fix confusing download dialog popup (#599) by @hasufell
More troubleshooting (#598) by @hasufell

2.2.0

Bump version to 2.2.0 (Syncs up pre-release and release version) (#594) by @fendor

2.0.1

Bad error message when ghcup is not installed (#591) by @hasufell
Better error message if we can't find a HLS version for a given GHC (#588) by @hasufell
Properly convert release metadata from json (#585) by @fendor
Ignore missing entries in Release Metadata (#582) by @fendor
Add Tool class and print stacktraces (#579) by @fendor
List Env Vars we care about only (#578) by @fendor
Prepare pre-release 2.1.0 (#574) by @fendor
Enable pre-release feature for VSX Marketplace (#573) by @fendor
Add prettier script (#566) by @fendor
Remove accidental run command (#565) by @fendor
Upgrade dependencies (#564) by @fendor
Add new configuration options for rename plugin (#563) by @OliverMadine
Introduce 'haskell.toolchain' setting (#562) by @hasufell
Improve (#558) by @hasufell
Remove stdout/sterr from user error message (#556) by @fendor
Fix npm security issue (#555) by @fendor
No colour output for GHCup (#554) by @fendor
Add eval plugin configuration (#549) by @xsebek
Manage all the Haskell things (#547) by @hasufell
Consider user installed HLSes (e.g. via ghcup compile) (#543) by @hasufell
Update README.MD GHC support (#537) by @cptwunderlich
fix: change deprecated Haskell Platform install link to GHCup (#536) by @HEIGE-PCloud
Update HLS installation method (#533) by @hasufell
Fixes related with paths (#518) by @jneira
Reorganize troubleshooting section (#516) by @jneira

1.8.0

This release includes some interesting new features:

You can now pass custom environment variables to the lsp server with the haskell.serverEnvironment config option per project basis, thanks to @jacobprudhomme.
- For example: "haskell.serverEnvironment": { "XDG_CACHE_HOME": "/path/to/my/cache" }
With this version the extension will try to use the newer lsp server version which supports the ghc used by the project being loaded, thanks to @mduerig
- WARNING: This will suppose it will use an older version than the latest one, without its features and bug fixes.
The extension has lot of more log traces now, which hopefully will help to identify the cause of issues

Pull requests merged for 1.8.0

Update supported ghc versions for hls-1.5.1 (#514) by @jneira
Fix hole_severity option: Use integer instead of string (#511) by @mirko-plowtech
Update issue templates (#509) by @jneira
Add traces for download hls (#508) by @jneira
support old hls versions compatible with the requested ghc version (#506) by @mduerig
Fix ci: ensure we have a supported ghc version in PATH (#496) by @jneira
Trace environment variables (#495) by @jneira
Pass environment variables to LSP (#494) by @jacobprudhomme
Reorganize README (#491) by @jneira
Fix error handling of server exec discovery in windows (#486) by @jneira
Bump versions of ts, cheerio, mocha (#485) by @jneira
Improve serverExecutablePath description and error when pointing to a directory (#484) by @jneira
Add integration smoke test (#481) by @jneira
Setup the test suite (#475) by @jneira

1.7.1

Bug fix release due to #471 and fixed with #469 thanks to @berberman

1.7.0

Add an option to set server command line arguments thanks to @cdsmith https://github.com/haskell/vscode-haskell/pull/464
- It includes a new config option haskell.serverExtraArgs to being able to pass extra argument to the lsp server executable
Update config options to match last haskell-language-server version https://github.com/haskell/vscode-haskell/pull/463
- It removes haskell.diagnosticsOnChange and haskell.formatOnImportOn cause they were unused in the server
- It adds haskell.checkProject, haskell.maxCompletions and haskell.plugin.refineImports.globalOn
Fix showDocumentation command thanks to @pranaysashank https://github.com/haskell/vscode-haskell/pull/452
- It fixes partially showing the documentation directly in vscode. The documentation is rendered but internal links still does not work
- Two config options has been added: haskell.openDocumentationInHackage and haskell.openSourceInHackage with default value true
  - So documentation will be opened using the hackage url in an external navigator by default
  - If you prefer having them in vscode you will need to change them to false
Create output channel only if there are no existing clients thanks to @pranaysashank https://github.com/haskell/vscode-haskell/pull/448
- This fixes the creation of several output channels for the extension

1.6.1

Fix wrapper call to get project ghc version in windows with spaces in path (https://github.com/haskell/vscode-haskell/pull/439)

1.6.0

Bump up vscode version to 1.52.0 (#424) by @berberman
- To match the lsp spec version used in haskell-language-version and fix https://github.com/haskell/haskell-language-server/issues/2068

1.5.1

Add much more logging in the client side, configured with haskell.trace.client
Fix error handling of working out project ghc and a bug when the path to the executable contains spaces (See #421)
- And dont use a shell to spawn the subprocess in non windows systems
- Show the progress as a cancellable notification
Add commands Start Haskell LSP server and Stop Haskell LSP server

1.5.0

Emit warning about limited support for ghc-9.x on hls executable download
Fix working out project ghc progress notificacion
Fix tactics config, thanks to @isovector
Update server config to match haskell-language-server-1.3.0 one

1.4.0

Restore resource scope for haskell.serverExecutablePath temporary. The machine scope will be set again after giving users a period of time to let them adapt theirs workflows and changing or adding some option in the extension itself to help that adjustement (see #387).

1.3.0

Add haskell.releasesURL option to override where to look for HLS releases search for HLS downloads, thanks to @soiamsoNG
With this version the only supported lsp server variant is haskell-language-server
Add support for generic plugin configuration. Thanks to it, each plugin capability (diagnostics, code actions, code lenses, etc) or the entire plugin can be disabled
Add some plugin specic options:
- wingman (aka tactics) plugin
  - haskell.plugin.tactic.config.features: Feature set used by the plugin
  - haskell.plugin.tactics.config.hole_severity: The severity to use when showing hole diagnostics
  - haskell.plugin.tactic.config.max_use_ctor_actions: Maximum number of Use constructor <x> code actions that can appear
  - haskell.plugin.tactics.config.timeout_duration: The timeout for Wingman actions, in seconds
- completions
  - haskell.plugin.ghcide-completions.config.autoExtendOn: Extends the import list automatically when completing a out-of-scope identifier
  - haskell.plugin.ghcide-completions.config.snippetsOn: Inserts snippets when using code completions
- type signature lenses - haskell.plugin.ghcide-type-lenses.config.mode: Control how type lenses are shown
The option haskell.serverExecutablePath has now machine scope, so it can be only changed globally by the user. It avoids a potential security vulnerability as folders containing .vscode/settings.json with that option could execute arbitrary programs.
Deprecated options:
- haskell.hlintOn: use haskell.plugin.hlint.globalOn instead.
- haskell.completionSnippetsOn: use haskell.plugin.ghcide-completions.config.snippetsOn
Fixed a small typo that caused the server not to be loaded in .lhs files, thanks to @Max7cd

1.2.0

Add option to open local documentation on Hackage (@DunetsNM)
Add haskell.updateBehaviour option to configure when to check for updates (@WorldSEnder)
Use locally installed servers on connection failure (@WorldSEnder)

1.1.0

Add Fourmolu as a plugin formatter provider (@georgefst)
Remove the haskell.enable configuration option, since VS Code now allows you to disable extensions on a per workspace basis
Display errors when fetching from the GitHub API properly

1.0.1

Switch the default formatter to Ormolu to match haskell-language-server
Fix haskell.serverExecutablePath not working with absolute paths on Windows (@winestone)
Improve the help text and error message when haskell.serverExecutablePath is not found
Fix the rendering of the markdown table in the README (@Darren8098)

1.0.0

vscode-haskell now lives under the Haskell organisation
Can now download zip archived binaries, which the Windows binaries are now distributed as
Improve README (@pepeiborra @jaspervdj)

0.1.1

Fix the restart server and import identifier commands

vscode-hie-server/Haskell Language Server is now just Haskell, and will soon be published under the Haskell organisation as haskell-vscode. This release makes haskell-language-server the default langauge server of choice and automatically downloads and installs binaries. Installation from source is still supported though and any binaries located on your PATH for the selected langauge server will be used instead.

Important!

As part of this, your configuration may be reset as the keys move from languageServerHaskell.completionSnippetsOn to haskell.completionSnippetsOn.

Fix the document and source browser
Remove obselete commands that are no longer supported by any of the language servers
- Show type command
- Insert type command
- HaRe commands
- Case split commands

0.0.40

Change the way the backend is configured, simplifying it.

remove wrapper scripts (hie-vscode.sh/hie-vscode.bat)
dropdown choice between haskell-ide-engine, haskell-language-server or ghcide in the hieVariant setting.
this can be overridden by an explicit hieExecutablePath, as before.

0.0.39

Remove verbose logging option, it is not longer supported.

0.0.38

Bump dependencies

0.0.37

Trying again, working 0.0.35

Add Restart command (@gdziadkiewicz)
Add Ormolu as a formatter option (@DavSanchez)
Update README

0.0.36

Roll back to 0.0.34

0.0.35

Add Restart command (@gdziadkiewicz)
Add Ormolu as a formatter option (@DavSanchez)
Update README

0.0.34

Remove --lsp parameter from hie-vscode.bat

0.0.33

Introduced configuration setting noLspParam, default false to control setting the --lsp flag for the hie server. So by default we will set the command line argument for the server, but it can be turned off.

0.0.32

Re-enable the --lsp flag for the hie server
Update some deps for security vulnerabilities

0.0.31

Log to stderr (vscode output) by default, add option for logfile (@bubba)

0.0.30

Bundle using webpack (@chrismwendt)
Bump protocol version to 3.15 prerelease (@alanz) This allows working progress reporting from hie.
Update casesplit plugin (@Avi-D-coder)

0.0.29

bump protocol version to 3.15 (prerelease) (@alanz)
upgrade deps, including avoiding vulnerabilities on lodash (@alanz)
warn about compile time and wrapped hie (@janat08)

0.0.28

remove unused lsp flag (@bubba)
do not start hie if hie-wrapper crashes (@bubba)
Expose diagnosticsOnChange option for settings (Frederik Ramcke)
Avoid CVE on extend package
Enable displaying window progress (@bubba)

0.0.27

Re-enable search feature for documentation (@anonimitoraf) Accesed via ctrl-f.

0.0.26

Show documentation content using Webview API (@EdAllonby)
npm audit fix (@alanz)

0.0.25

Add vsce dependency to "Contributing" document (@EdAllonby)
Add formatterProvider config (@bubba)
Bugfix for stack version on windows (@beauzeaux)
Update settings to match hie version 0.7.0.0 (@alanz)
npm audit fix (@bubba)

0.0.24

Add snippet config option (@bubba)

0.0.23

Fix multi-process issue, where vscode would launch multiple hie instances. By @kfigiela

0.0.22

Add configuration option to enable liquid haskell processing. This is a preview feature of hie from ca2d3eaa19da8ec9d55521b461d8e2e8cffee697 on 2019-09-05.

0.0.21

Remove languageServerHaskell.useHieWrapper, We now use hie-wrapper by default.
Update the vscode-languageclient to v4.4.0
Fix #98 Import identifier insertion line moduleLine is now the first line that is (trimmed) where or ends with where or ends with )where. (@mpilgrem)

0.0.20

Add the case-split function (@txsmith). Required hie >= 0.2.1.0
Update the vscode-languageclient to v4.2.0 (@Bubba)
Use the hie-wrapper executable now installed with hie to choose the right version of hie to use for the given project.

0.0.19

Fix hie launch on windows with logging off (#90). Thanks @Tehnix.

0.0.18

Support GHC 8.4.3 in the wrapper file
The languageServerHaskell.trace.server parameter now affects /tmp/hie.log, as well as ghc-mod --vomit output.
Add an Import identifier command, by @chrismwendt

0.0.17

Support GHC 8.4.2 in the wrapper file
Update dependencies to avoid security vulnerability.
Use os.tmpdir() for the hie.log file

0.0.15

Support the new webview-api for the documentation browser, thanks to @AlexeyRaga.

0.0.14

Revert vscode-languageclient dependency to version 3.5.0, since version 4.x for some reason breaks the documentation browser.

0.0.13

Add configuration to set the path to your HIE executable, if it's not on your PATH. Note that this adds the --lsp argument to the call of this executable.

0.0.12

Add configuration to enable/disable HIE, useful for multi-root workspaces.

0.0.11

Add additional marketplace categories.

0.0.10

Add support for multi-root workspaces, thanks to @tehnix. See the README section on Using multi-root workspaces for more.

0.0.9

Publish to the visual studio marketplace through travis CI via git tags. E.g. git tag -a 0.0.9 -m "Version 0.0.9" and then git push origin 0.0.9.

0.0.8

Add new haskell-ide-engine logo, thanks to @damienflament

Add rudimentary support for detecting the project GHC version and using the appropriate hie version. This currently only works on Linux (contributors on other platforms, please jump in with appropriate scripts) and requires haskell-ide-engine built via the Makefile added in https://github.com/haskell/haskell-ide-engine/pull/447. Thanks to @Tehnix

0.0.7

Update package-lock.json to fresh dependencies.

Add show type of selected expression on hover feature, by @halhenke

Added options for how to display the same information when using the show type command menu, by @halhenke

Moved the configuration setting about showing trace information into the proper scope, by @halhenke

0.0.6

Update package-lock.json to fresh dependencies.

Update the installation check on Win32 platforms, by @soylens.

Use tslint on the plugin sources, by @halhenke.

0.0.5

Stop the output channel from taking focus on startup, by @Tehnix and @halhenke

Rework and improve the document layout, for gihub and the marketplace, by @Tehnix

Set up Travis testing an potential auto-deply to marketplace, by @Tehnix