After server restart fourmolu uses default config #920

worm2fed · 2023-07-18T11:23:26Z

Your environment

Which OS do you use?

❯ uname -a
Darwin vega.Home 22.5.0 Darwin Kernel Version 22.5.0: Thu Jun  8 22:22:20 PDT 2023; root:xnu-8796.121.3~7/RELEASE_ARM64_T6000 arm64

Which version of GHC do you use and how did you install it?
9.2.8 from ghcup

How is your project built (alternative: link to the project)?
via stack

Which LSP client (editor/plugin) do you use?
vs code

Which version of HLS do you use and how did you install it?
2.0.0.1 from ghcup

Have you configured HLS in any way (especially: a hie.yaml file)?

hie.yaml

cradle:
  stack:
    - path: "./src"
      component: "union:lib"

    - path: "./app"
      component: "union:exe:union-server"

    - path: "./app/Paths_union.hs"
      component: "union:exe:union-server"

    - path: "./tests/base"
      component: "union:test:union-base-tests"

    - path: "./tests/e2e"
      component: "union:test:union-e2e-tests"

dependencies:
  - ./package.yaml
  - ./stack.yaml

and vs code settings:

...
  "haskell.plugin.ghcide-completions.config.autoExtendOn": false,
  "haskell.trace.client": "error",
  "haskell.manageHLS": "GHCup",
  "haskell.plugin.rename.config.crossModule": true,
  "haskell.serverExecutablePath": "haskell-language-server-wrapper",
  "haskell.checkProject": false,
  "haskell.plugin.eval.config.exception": true,
  "haskell.formattingProvider": "fourmolu",
  "haskell.plugin.hlint.config.flags": [
      "-j",
    ],
    "haskell.plugin.fourmolu.config.external": true,
...

Steps to reproduce

restart HLS via vs code command
save file

Expected behaviour

Fourmolu will continue to use custom config as it was before HLS restart

Actual behaviour

Fourmolu will use it's default config instead of I have in root

Debug information

Tested without "haskell.plugin.fourmolu.config.external": true - same behaviour.
When I reload window - it works as expected.

Also, at recent HLS version there was no such problem.

HLS output with expected behaviour (BEFORE restart)

2023-07-18 11:18:50.2970000 [client] DEBUG Environment variables:
2023-07-18 11:18:50.2970000 [client] DEBUG   PATH: /Users/worm2fed/.opam/default/bin:/Users/worm2fed/.cargo/bin:/opt/homebrew/opt/llvm@13/bin:/Applications/Sublime Text.app/Contents/SharedSupport/bin:/Users/worm2fed/workspace/flutter/bin:/Users/worm2fed/workspace/scripts:/Users/worm2fed/.local/bin:/opt/homebrew/bin:/opt/homebrew/sbin:/usr/local/bin:/System/Cryptexes/App/usr/bin:/usr/bin:/bin:/usr/sbin:/sbin:/usr/local/MacGPG2/bin:/Library/Apple/usr/bin:/Applications/Postgres.app/Contents/Versions/latest/bin:/Applications/Postgres.app/Contents/Versions/latest/lib:/var/run/com.apple.security.cryptexd/codex.system/bootstrap/usr/local/bin:/var/run/com.apple.security.cryptexd/codex.system/bootstrap/usr/bin:/var/run/com.apple.security.cryptexd/codex.system/bootstrap/usr/appleinternal/bin:/Users/worm2fed/.cabal/bin:/Users/worm2fed/.ghcup/bin
2023-07-18 11:18:50.2970000 [client] INFO Finding haskell-language-server
2023-07-18 11:18:50.2970000 [client] INFO Trying to find the server executable in: haskell-language-server-wrapper
2023-07-18 11:18:50.2970000 [client] DEBUG Location after path variables substitution: haskell-language-server-wrapper
2023-07-18 11:18:50.3000000 [client] INFO Activating the language server in working dir: /Users/worm2fed/workspace/union/union-server (the workspace folder)
2023-07-18 11:18:50.3000000 [client] INFO run command: haskell-language-server-wrapper --lsp
2023-07-18 11:18:50.3000000 [client] INFO debug command: haskell-language-server-wrapper --lsp
2023-07-18 11:18:50.3000000 [client] INFO server environment variables:
2023-07-18 11:18:50.3000000 [client] DEBUG document selector patten: /Users/worm2fed/workspace/union/union-server/**/*
2023-07-18 11:18:50.3040000 [client] INFO Starting language server
Found "/Users/worm2fed/workspace/union/union-server/hie.yaml" for "/Users/worm2fed/workspace/union/union-server/a"
Run entered for haskell-language-server-wrapper(haskell-language-server-wrapper) Version 2.0.0.1 aarch64 ghc-8.10.7
Current directory: /Users/worm2fed/workspace/union/union-server
Operating system: darwin
Arguments: ["--lsp"]
Cradle directory: /Users/worm2fed/workspace/union/union-server
Cradle type: Stack

Tool versions found on the $PATH
cabal:          3.10.1.0
stack:          2.11.1
ghc:            9.2.8


Consulting the cradle to get project GHC version...
2023-07-18T11:18:50.411046Z | Debug | executing command: stack setup --silent
2023-07-18T11:18:50.428854Z | Debug | executing command: stack exec ghc -- --numeric-version
Project GHC version: 9.2.8
haskell-language-server exe candidates: ["haskell-language-server-9.2.8","haskell-language-server"]
Launching haskell-language-server exe at:/Users/worm2fed/.ghcup/bin/haskell-language-server-9.2.8
2023-07-18T11:18:50.674333Z | Debug | executing command: stack setup --silent
2023-07-18T11:18:50.693563Z | Debug | executing command: stack exec ghc -- -v0 -package-env=- -ignore-dot-ghci -e Control.Monad.join (Control.Monad.fmap System.IO.putStr System.Environment.getExecutablePath)
2023-07-18T11:18:51.207215Z | Debug | executing command: stack setup --silent
2023-07-18T11:18:51.226359Z | Debug | executing command: stack exec ghc -- --print-libdir
2023-07-18T11:18:52.855705Z | Info | No log file specified; using stderr.
2023-07-18T11:18:52.856054Z | Info | haskell-language-server version: 2.0.0.1 (GHC: 9.2.8) (PATH: /Users/worm2fed/.ghcup/hls/2.0.0.1/lib/haskell-language-server-2.0.0.1/bin/haskell-language-server-9.2.8)
2023-07-18T11:18:52.856412Z | Info | Directory: /Users/worm2fed/workspace/union/union-server
2023-07-18T11:18:52.856560Z | Info | Starting (haskell-language-server) LSP server...
  GhcideArguments {argsCommand = LSP, argsCwd = Nothing, argsShakeProfiling = Nothing, argsTesting = False, argsExamplePlugin = False, argsDebugOn = False, argsLogFile = Nothing, argsThreads = 0, argsProjectGhcVersion = False}
  PluginIds: [ pragmas
             , LSPRecorderCallback
             , rename
             , ghcide-completions
             , class
             , refineImports
             , splice
             , cabal
             , changeTypeSignature
             , qualifyImportedNames
             , alternateNumberFormat
             , hlint
             , cabalfmt
             , explicit-fields
             , ghcide-code-actions-fill-holes
             , overloaded-record-dot
             , floskell
             , ghcide-extend-import-action
             , codeRange
             , importLens
             , retrie
             , ghcide-type-lenses
             , ghcide-code-actions-imports-exports
             , ghcide-hover-and-symbols
             , eval
             , gadt
             , fourmolu
             , callHierarchy
             , stylish-haskell
             , ghcide-code-actions-type-signatures
             , ghcide-code-actions-bindings
             , moduleName
             , ormolu
             , ghcide-core
             , explicit-fixity ]
2023-07-18T11:18:52.858518Z | Info | Logging heap statistics every 60.00s
 2023-07-18T11:18:52.897361Z | Info | Starting LSP server...
  If you are seeing this in a terminal, you probably should have run WITHOUT the --lsp option!
  PluginIds: [ pragmas
             , LSPRecorderCallback
             , rename
             , ghcide-completions
             , class
             , refineImports
             , splice
             , cabal
             , changeTypeSignature
             , qualifyImportedNames
             , alternateNumberFormat
             , hlint
             , cabalfmt
             , explicit-fields
             , ghcide-code-actions-fill-holes
             , overloaded-record-dot
             , floskell
             , ghcide-extend-import-action
             , codeRange
             , importLens
             , retrie
             , ghcide-type-lenses
             , ghcide-code-actions-imports-exports
             , ghcide-hover-and-symbols
             , eval
             , gadt
             , fourmolu
             , callHierarchy
             , stylish-haskell
             , ghcide-code-actions-type-signatures
             , ghcide-code-actions-bindings
             , moduleName
             , ormolu
             , ghcide-core
             , explicit-fixity ]
2023-07-18T11:18:52.897960Z | Info | Starting server
2023-07-18T11:18:52.899298Z | Info | Started LSP server in 0.00s
2023-07-18T11:18:53.182222Z | Info | Registering IDE configuration: IdeConfiguration {workspaceFolders = fromList [NormalizedUri (-7119994970564872818) "file:///Users/worm2fed/workspace/union/union-server"], clientSettings = hashed Nothing}
[Info  - 12:18:53] haskell-language-server version: 2.0.0.1 (GHC: 9.2.8) (PATH: /Users/worm2fed/.ghcup/hls/2.0.0.1/lib/haskell-language-server-2.0.0.1/bin/haskell-language-server-9.2.8)
[Info  - 12:18:53] Directory: /Users/worm2fed/workspace/union/union-server
[Info  - 12:18:53] Starting (haskell-language-server) LSP server...
  GhcideArguments {argsCommand = LSP, argsCwd = Nothing, argsShakeProfiling = Nothing, argsTesting = False, argsExamplePlugin = False, argsDebugOn = False, argsLogFile = Nothing, argsThreads = 0, argsProjectGhcVersion = False}
  PluginIds: [ pragmas
             , LSPRecorderCallback
             , rename
             , ghcide-completions
             , class
             , refineImports
             , splice
             , cabal
             , changeTypeSignature
             , qualifyImportedNames
             , alternateNumberFormat
             , hlint
             , cabalfmt
             , explicit-fields
             , ghcide-code-actions-fill-holes
             , overloaded-record-dot
             , floskell
             , ghcide-extend-import-action
             , codeRange
             , importLens
             , retrie
             , ghcide-type-lenses
             , ghcide-code-actions-imports-exports
             , ghcide-hover-and-symbols
             , eval
             , gadt
             , fourmolu
             , callHierarchy
             , stylish-haskell
             , ghcide-code-actions-type-signatures
             , ghcide-code-actions-bindings
             , moduleName
             , ormolu
             , ghcide-core
             , explicit-fixity ]
[Info  - 12:18:53] Logging heap statistics every 60.00s
[Info  - 12:18:53] Starting LSP server...
  If you are seeing this in a terminal, you probably should have run WITHOUT the --lsp option!
  PluginIds: [ pragmas
             , LSPRecorderCallback
             , rename
             , ghcide-completions
             , class
             , refineImports
             , splice
             , cabal
             , changeTypeSignature
             , qualifyImportedNames
             , alternateNumberFormat
             , hlint
             , cabalfmt
             , explicit-fields
             , ghcide-code-actions-fill-holes
             , overloaded-record-dot
             , floskell
             , ghcide-extend-import-action
             , codeRange
             , importLens
             , retrie
             , ghcide-type-lenses
             , ghcide-code-actions-imports-exports
             , ghcide-hover-and-symbols
             , eval
             , gadt
             , fourmolu
             , callHierarchy
             , stylish-haskell
             , ghcide-code-actions-type-signatures
             , ghcide-code-actions-bindings
             , moduleName
             , ormolu
             , ghcide-core
             , explicit-fixity ]
[Info  - 12:18:53] Starting server
[Info  - 12:18:53] Started LSP server in 0.00s
[Info  - 12:18:53] Registering IDE configuration: IdeConfiguration {workspaceFolders = fromList [NormalizedUri (-7119994970564872818) "file:///Users/worm2fed/workspace/union/union-server"], clientSettings = hashed Nothing}
2023-07-18T11:18:53.190115Z | Info | Cradle path: src/Service/Base/Aws.hs
2023-07-18T11:18:53.190861Z | Info | invoking build tool to determine build flags (this may take some time depending on the cache)
[Info  - 12:18:53] Cradle path: src/Service/Base/Aws.hs
[Info  - 12:18:53] invoking build tool to determine build flags (this may take some time depending on the cache)
2023-07-18T11:18:55.146297Z | Info | Interface files cache directory: /Users/worm2fed/.cache/ghcide/main-8e33b1e8063e499f2863d563f2f67fb8323e8e82
2023-07-18T11:18:55.146839Z | Info | Making new HscEnv. In-place unit ids: [main]
[Info  - 12:18:55] Interface files cache directory: /Users/worm2fed/.cache/ghcide/main-8e33b1e8063e499f2863d563f2f67fb8323e8e82
[Info  - 12:18:55] Making new HscEnv. In-place unit ids: [main]
2023-07-18T11:19:02.905545Z | Info | Typechecking reverse dependencies for NormalizedFilePath "/Users/worm2fed/workspace/union/union-server/src/Service/Base/Aws.hs": [ NormalizedFilePath "/Users/worm2fed/workspace/union/union-server/src/Application.hs"
                                                                                                                                 , NormalizedFilePath "/Users/worm2fed/workspace/union/union-server/src/Service/Uploader.hs"
                                                                                                                                 , NormalizedFilePath "/Users/worm2fed/workspace/union/union-server/src/Service/Sender.hs" ]
[Info  - 12:19:02] Typechecking reverse dependencies for NormalizedFilePath "/Users/worm2fed/workspace/union/union-server/src/Service/Base/Aws.hs": [ NormalizedFilePath "/Users/worm2fed/workspace/union/union-server/src/Application.hs"
                                                                                                                                 , NormalizedFilePath "/Users/worm2fed/workspace/union/union-server/src/Service/Uploader.hs"
                                                                                                                                 , NormalizedFilePath "/Users/worm2fed/workspace/union/union-server/src/Service/Sender.hs" ]

HLS output with UNexpected behaviour (AFTER restart)

[Info  - 12:14:49] Stopping the server
[Info  - 12:14:49] Starting the server
Found "/Users/worm2fed/workspace/union/union-server/hie.yaml" for "/Users/worm2fed/workspace/union/union-server/a"
Run entered for haskell-language-server-wrapper(haskell-language-server-wrapper) Version 2.0.0.1 aarch64 ghc-8.10.7
Current directory: /Users/worm2fed/workspace/union/union-server
Operating system: darwin
Arguments: ["--lsp"]
Cradle directory: /Users/worm2fed/workspace/union/union-server
Cradle type: Stack

Tool versions found on the $PATH
cabal:          3.10.1.0
stack:          2.11.1
ghc:            9.2.8


Consulting the cradle to get project GHC version...
2023-07-18T11:14:49.337257Z | Debug | executing command: stack setup --silent
2023-07-18T11:14:49.357377Z | Debug | executing command: stack exec ghc -- --numeric-version
Project GHC version: 9.2.8
haskell-language-server exe candidates: ["haskell-language-server-9.2.8","haskell-language-server"]
Launching haskell-language-server exe at:/Users/worm2fed/.ghcup/bin/haskell-language-server-9.2.8
2023-07-18T11:14:49.589551Z | Debug | executing command: stack setup --silent
2023-07-18T11:14:49.609577Z | Debug | executing command: stack exec ghc -- -v0 -package-env=- -ignore-dot-ghci -e Control.Monad.join (Control.Monad.fmap System.IO.putStr System.Environment.getExecutablePath)
2023-07-18T11:14:50.093550Z | Debug | executing command: stack setup --silent
2023-07-18T11:14:50.113869Z | Debug | executing command: stack exec ghc -- --print-libdir
2023-07-18T11:14:51.666513Z | Info | No log file specified; using stderr.
2023-07-18T11:14:51.666818Z | Info | haskell-language-server version: 2.0.0.1 (GHC: 9.2.8) (PATH: /Users/worm2fed/.ghcup/hls/2.0.0.1/lib/haskell-language-server-2.0.0.1/bin/haskell-language-server-9.2.8)
2023-07-18T11:14:51.667147Z | Info | Directory: /Users/worm2fed/workspace/union/union-server
2023-07-18T11:14:51.667297Z | Info | Starting (haskell-language-server) LSP server...
  GhcideArguments {argsCommand = LSP, argsCwd = Nothing, argsShakeProfiling = Nothing, argsTesting = False, argsExamplePlugin = False, argsDebugOn = False, argsLogFile = Nothing, argsThreads = 0, argsProjectGhcVersion = False}
  PluginIds: [ pragmas
             , LSPRecorderCallback
             , rename
             , ghcide-completions
             , class
             , refineImports
             , splice
             , cabal
             , changeTypeSignature
             , qualifyImportedNames
             , alternateNumberFormat
             , hlint
             , cabalfmt
             , explicit-fields
             , ghcide-code-actions-fill-holes
             , overloaded-record-dot
             , floskell
             , ghcide-extend-import-action
             , codeRange
             , importLens
             , retrie
             , ghcide-type-lenses
             , ghcide-code-actions-imports-exports
             , ghcide-hover-and-symbols
             , eval
             , gadt
             , fourmolu
             , callHierarchy
             , stylish-haskell
             , ghcide-code-actions-type-signatures
             , ghcide-code-actions-bindings
             , moduleName
             , ormolu
             , ghcide-core
             , explicit-fixity ]
2023-07-18T11:14:51.669271Z | Info | Logging heap statistics every 60.00s
 2023-07-18T11:14:51.706943Z | Info | Starting LSP server...
  If you are seeing this in a terminal, you probably should have run WITHOUT the --lsp option!
  PluginIds: [ pragmas
             , LSPRecorderCallback
             , rename
             , ghcide-completions
             , class
             , refineImports
             , splice
             , cabal
             , changeTypeSignature
             , qualifyImportedNames
             , alternateNumberFormat
             , hlint
             , cabalfmt
             , explicit-fields
             , ghcide-code-actions-fill-holes
             , overloaded-record-dot
             , floskell
             , ghcide-extend-import-action
             , codeRange
             , importLens
             , retrie
             , ghcide-type-lenses
             , ghcide-code-actions-imports-exports
             , ghcide-hover-and-symbols
             , eval
             , gadt
             , fourmolu
             , callHierarchy
             , stylish-haskell
             , ghcide-code-actions-type-signatures
             , ghcide-code-actions-bindings
             , moduleName
             , ormolu
             , ghcide-core
             , explicit-fixity ]
2023-07-18T11:14:51.707430Z | Info | Starting server
2023-07-18T11:14:51.708745Z | Info | Started LSP server in 0.00s
2023-07-18T11:14:51.955142Z | Info | Registering IDE configuration: IdeConfiguration {workspaceFolders = fromList [NormalizedUri (-7119994970564872818) "file:///Users/worm2fed/workspace/union/union-server"], clientSettings = hashed Nothing}
[Info  - 12:14:51] haskell-language-server version: 2.0.0.1 (GHC: 9.2.8) (PATH: /Users/worm2fed/.ghcup/hls/2.0.0.1/lib/haskell-language-server-2.0.0.1/bin/haskell-language-server-9.2.8)
[Info  - 12:14:51] Directory: /Users/worm2fed/workspace/union/union-server
[Info  - 12:14:51] Starting (haskell-language-server) LSP server...
  GhcideArguments {argsCommand = LSP, argsCwd = Nothing, argsShakeProfiling = Nothing, argsTesting = False, argsExamplePlugin = False, argsDebugOn = False, argsLogFile = Nothing, argsThreads = 0, argsProjectGhcVersion = False}
  PluginIds: [ pragmas
             , LSPRecorderCallback
             , rename
             , ghcide-completions
             , class
             , refineImports
             , splice
             , cabal
             , changeTypeSignature
             , qualifyImportedNames
             , alternateNumberFormat
             , hlint
             , cabalfmt
             , explicit-fields
             , ghcide-code-actions-fill-holes
             , overloaded-record-dot
             , floskell
             , ghcide-extend-import-action
             , codeRange
             , importLens
             , retrie
             , ghcide-type-lenses
             , ghcide-code-actions-imports-exports
             , ghcide-hover-and-symbols
             , eval
             , gadt
             , fourmolu
             , callHierarchy
             , stylish-haskell
             , ghcide-code-actions-type-signatures
             , ghcide-code-actions-bindings
             , moduleName
             , ormolu
             , ghcide-core
             , explicit-fixity ]
[Info  - 12:14:51] Logging heap statistics every 60.00s
[Info  - 12:14:51] Starting LSP server...
  If you are seeing this in a terminal, you probably should have run WITHOUT the --lsp option!
  PluginIds: [ pragmas
             , LSPRecorderCallback
             , rename
             , ghcide-completions
             , class
             , refineImports
             , splice
             , cabal
             , changeTypeSignature
             , qualifyImportedNames
             , alternateNumberFormat
             , hlint
             , cabalfmt
             , explicit-fields
             , ghcide-code-actions-fill-holes
             , overloaded-record-dot
             , floskell
             , ghcide-extend-import-action
             , codeRange
             , importLens
             , retrie
             , ghcide-type-lenses
             , ghcide-code-actions-imports-exports
             , ghcide-hover-and-symbols
             , eval
             , gadt
             , fourmolu
             , callHierarchy
             , stylish-haskell
             , ghcide-code-actions-type-signatures
             , ghcide-code-actions-bindings
             , moduleName
             , ormolu
             , ghcide-core
             , explicit-fixity ]
[Info  - 12:14:51] Starting server
[Info  - 12:14:51] Started LSP server in 0.00s
[Info  - 12:14:51] Registering IDE configuration: IdeConfiguration {workspaceFolders = fromList [NormalizedUri (-7119994970564872818) "file:///Users/worm2fed/workspace/union/union-server"], clientSettings = hashed Nothing}
2023-07-18T11:14:51.965124Z | Info | Cradle path: src/Service/Base/Aws.hs
[Info  - 12:14:51] Cradle path: src/Service/Base/Aws.hs
2023-07-18T11:14:51.965536Z | Info | invoking build tool to determine build flags (this may take some time depending on the cache)
[Info  - 12:14:51] invoking build tool to determine build flags (this may take some time depending on the cache)
2023-07-18T11:14:54.765679Z | Info | Interface files cache directory: /Users/worm2fed/.cache/ghcide/main-8e33b1e8063e499f2863d563f2f67fb8323e8e82
2023-07-18T11:14:54.766190Z | Info | Making new HscEnv. In-place unit ids: [main]
[Info  - 12:14:54] Interface files cache directory: /Users/worm2fed/.cache/ghcide/main-8e33b1e8063e499f2863d563f2f67fb8323e8e82
[Info  - 12:14:54] Making new HscEnv. In-place unit ids: [main]
2023-07-18T11:14:58.685094Z | Info | Typechecking reverse dependencies for NormalizedFilePath "/Users/worm2fed/workspace/union/union-server/src/Service/Base/Aws.hs": [ NormalizedFilePath "/Users/worm2fed/workspace/union/union-server/src/Application.hs"
                                                                                                                                 , NormalizedFilePath "/Users/worm2fed/workspace/union/union-server/src/Service/Uploader.hs"
                                                                                                                                 , NormalizedFilePath "/Users/worm2fed/workspace/union/union-server/src/Service/Sender.hs" ]
[Info  - 12:14:58] Typechecking reverse dependencies for NormalizedFilePath "/Users/worm2fed/workspace/union/union-server/src/Service/Base/Aws.hs": [ NormalizedFilePath "/Users/worm2fed/workspace/union/union-server/src/Application.hs"
                                                                                                                                 , NormalizedFilePath "/Users/worm2fed/workspace/union/union-server/src/Service/Uploader.hs"
                                                                                                                                 , NormalizedFilePath "/Users/worm2fed/workspace/union/union-server/src/Service/Sender.hs" ]

The text was updated successfully, but these errors were encountered:

fendor · 2023-07-18T11:37:35Z

Hi, thank you for the bug report!

Moving the bug report to the VSCode extension repository, which is likely the culprit in this bug.

fendor · 2023-07-24T07:49:42Z

Just fyi, I can reproduce the issue. I suspect that we transmit the configuration only on extension startup, and the HLS restart command doesn't send the configuration again.

Maybe we can manually send the configuration again.

worm2fed · 2023-07-24T09:30:36Z

@fendor
Note that less the a month ago there was no such issue. I need to restart HLS quite often and formatter worked with proper config

fendor · 2023-07-24T14:26:18Z

Oh, very interesting!

Perhaps it is related to our recent upgrade to the latest vscode-languageClient version...

July541 · 2023-07-24T14:32:22Z

I'll take a look at this later.

July541 · 2023-08-01T13:47:56Z

Update: After adding log to ormolu, I found hls is going to call ormolu plugin instead of fourmolu...

scarf005 · 2023-08-01T13:50:51Z

can confirm I was getting the same error on HLS 2.0.1 with Vscode Haskell extension v2.4.0.

when project loads initially, fourmolu is used to format the code.
HLS requires project to be built, so i run restart HLS command.
ormolu is used for formatting instead.

for an workaround, using v2.2.4 works well.

related discord thread on FP server

July541 · 2023-08-01T14:45:10Z

Update: The problem is the latest language-client doesn't send workspace/didChangeConfiguration while initializing, which means formattingProvider will be reset to the default value after restarting.

See context here: microsoft/vscode-languageserver-node#524

But we still don't know what makes this change happen, I'll try to investigate it before pushing a fix.

It causes troubles due to following the newer LSP spec which HLS is not ready for. For details, see haskell#920 and haskell/lsp#510, etc...

July541 · 2023-08-09T15:41:00Z

We published a new release that downgraded vscode-languageclient to fix this temporarily.

michaelpj · 2023-08-23T15:25:04Z

After building HLS off haskell/haskell-language-server#3773 I'm pretty sure this is now fixed. With version 2.4.0 of the extension, I can see that we're doing the correct negotiation with workspace/configuration and our configuration is getting updated, and I have the correct formatting. If anyone else can check that would be helpful, I'm not 100% sure I'm getting it right.

michaelpj · 2023-08-23T15:36:49Z

Corresponding lsp PR is here btw: haskell/lsp#512

worm2fed · 2023-10-11T12:53:16Z

thanks! seems working now

worm2fed added status: needs triage type: bug A bug or unintended effect labels Jul 18, 2023

fendor transferred this issue from haskell/haskell-language-server Jul 18, 2023

July541 self-assigned this Jul 24, 2023

July541 mentioned this issue Jul 31, 2023

Parse error reported while restarting the server #927

Closed

This was referenced Aug 1, 2023

Different strategy about parsing NotificationMessage haskell/lsp#508

Closed

Log fourmolu and ormolu version that hls using haskell/haskell-language-server#3744

Merged

Support workspace/configuration request for every server initilize haskell/lsp#510

Closed

fendor removed the status: needs triage label Aug 9, 2023

fendor added a commit to fendor/vscode-haskell that referenced this issue Aug 9, 2023

Downgrade vscode-languageclient

e9aec72

It causes troubles due to following the newer LSP spec which HLS is not ready for. For details, see haskell#920 and haskell/lsp#510, etc...

fendor mentioned this issue Aug 9, 2023

Downgrade vscode-languageclient #934

Merged

worm2fed closed this as completed Oct 11, 2023

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After server restart fourmolu uses default config #920

After server restart fourmolu uses default config #920

worm2fed commented Jul 18, 2023

fendor commented Jul 18, 2023 •

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worm2fed commented Oct 11, 2023

After server restart fourmolu uses default config #920

After server restart fourmolu uses default config #920

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worm2fed commented Jul 18, 2023

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fendor commented Jul 18, 2023 • edited Loading

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