Ionide-vscode-fsharp: Intellisense and CodeLens have been gone after v3.29 update [LINUX/UBUNTU]

[memoricab]

After the update, firstly fsi.exe was missing so I configured it manually in settings.json.
But intellisense-underlining syntax errors- and code lens not working.

Auto-complete works fine though.

UPDATE DEBUG INFO:

[16:21:02 INFO ] .Net runtime specified
[16:21:02 INFO ] finding FSAC for
runtime: NET
mono: mono
dotnet: null

OS Distro:

NAME="Ubuntu"
VERSION="18.04.1 LTS (Bionic Beaver)"
ID=ubuntu
ID_LIKE=debian
PRETTY_NAME="Ubuntu 18.04.1 LTS"
VERSION_ID="18.04"
VERSION_CODENAME=bionic
UBUNTU_CODENAME=bionic

VSCode :

Version: 1.28.2
Commit: 7f3ce96ff4729c91352ae6def877e59c561f4850
Date: 2018-10-17T00:20:56.183Z
Electron: 2.0.9
Chrome: 61.0.3163.100
Node.js: 8.9.3
V8: 6.1.534.41
Architecture: x64

Ionide Settings :

[MangelMaxime]

Hum synthax highligh should still works. Can you please try uninstall and re-install ionide extension ?

[memoricab]

I have already tried many times to uninstall completely and install mono packages, vscode and also extension. But not solved the issue.

[Teddmab]

I have the same issue

[memoricab]

Not a solution but in order to use those features I set-up ionide extension v3.27.0.

Now CodeLens and intellisense work fine.

[Paludan]

I have the same issue.

[Rhywun]

Same here - following appears in the log upon startup:

[11:38:57 ERROR] RES (008) <- {workspaceLoad} ERROR in 945 ms: {stack: Error: Request failed with status code 500
    at createError (/Users/me/.vscode/extensions/ionide.ionide-fsharp-3.29.0/fsharp.js:13103:15)
    at settle (/Users/me/.vscode/extensions/ionide.ionide-fsharp-3.29.0/fsharp.js:17033:12)
    at IncomingMessage.handleStreamEnd (/Users/me/.vscode/extensions/ionide.ionide-fsharp-3.29.0/fsharp.js:27857:11)
    at emitNone (events.js:111:20)
    at IncomingMessage.emit (events.js:208:7)
    at endReadableNT (_stream_readable.js:1056:12)
    at _combinedTickCallback (internal/process/next_tick.js:138:11)
    at process._tickCallback (internal/process/next_tick.js:180:9), message: Request failed with status code 500, config: [object Object], request: [object Object], response: [object Object]} Data=undefined

[lsmullenbrock]

Has there been any progress on this?

[Bob-McCrory]

This problem cuts across platforms: I have the same issue in Windows 10

[Paludan]

This problem cuts across platforms: I have the same issue in Windows 10

God damn I still had it working on my Arch machine, but now it stopped working there too >_>

[benfjohnson]

Also seeing this same issue on Solus Linux

[da9l]

Not working for me either in Windows 10. TBH, I don't know if this is actually the same problem but CodeLens and Intellisense is not working for me.

I create a simple file: hello.fs
let hello = "hello"

I have
Ionide-Fsharp: 3.29.0
VSCode:1.28.2
VS Community 2017:15.8.9
VS Build tools 2017:15.8.9
Dotnet Core CLI:2.1.403

I tried to downgrade ionide to 3.27.0 and 3.25.4 but it didn't help.

console.ts:136 [Extension Host] [IONIDE-FSAC] Cannot execute recordStubGenerator, File 'c:\Users\danie\projects\SuaveRestApi\hello.fs' not parsed 
t.log @ console.ts:136
t._logExtensionHostMessage @ extensionHost.ts:438
(anonymous) @ extensionHost.ts:246
emitTwo @ events.js:126
emit @ events.js:214
emit @ internal/child_process.js:772
_combinedTickCallback @ internal/process/next_tick.js:141
_tickCallback @ internal/process/next_tick.js:180
console.ts:136 [Extension Host] [IONIDE-FSAC] Cannot execute signature, File 'c:\Users\danie\projects\SuaveRestApi\hello.fs' not parsed 
t.log @ console.ts:136
t._logExtensionHostMessage @ extensionHost.ts:438
(anonymous) @ extensionHost.ts:246
emitTwo @ events.js:126
emit @ events.js:214
emit @ internal/child_process.js:772
_combinedTickCallback @ internal/process/next_tick.js:141
_tickCallback @ internal/process/next_tick.js:180
console.ts:136 [Extension Host] [IONIDE-FSAC] Cannot execute tooltip, File 'c:\Users\danie\projects\SuaveRestApi\hello.fs' not parsed 
t.log @ console.ts:136
t._logExtensionHostMessage @ extensionHost.ts:438
(anonymous) @ extensionHost.ts:246
emitTwo @ events.js:126
emit @ events.js:214
emit @ internal/child_process.js:772
_combinedTickCallback @ internal/process/next_tick.js:141
_tickCallback @ internal/process/next_tick.js:180
console.ts:136 [Extension Host] [IONIDE-FSAC] Cannot execute symboluse, File 'c:\Users\danie\projects\SuaveRestApi\hello.fs' not parsed 
t.log @ console.ts:136
t._logExtensionHostMessage @ extensionHost.ts:438
(anonymous) @ extensionHost.ts:246
emitTwo @ events.js:126
emit @ events.js:214
emit @ internal/child_process.js:772
_combinedTickCallback @ internal/process/next_tick.js:141
_tickCallback @ internal/process/next_tick.js:180
console.ts:136 [Extension Host] [IONIDE-FSAC] Cannot execute signature, File 'c:\Users\danie\projects\SuaveRestApi\hello.fs' not parsed 
t.log @ console.ts:136
t._logExtensionHostMessage @ extensionHost.ts:438
(anonymous) @ extensionHost.ts:246
emitTwo @ events.js:126
emit @ events.js:214
emit @ internal/child_process.js:772
_combinedTickCallback @ internal/process/next_tick.js:141
_tickCallback @ internal/process/next_tick.js:180
console.ts:136 [Extension Host] [IONIDE-FSAC] Cannot execute recordStubGenerator, File 'c:\Users\danie\projects\SuaveRestApi\hello.fs' not parsed 

F# Language Service. There is a Win32Exception "The system cannot find the file specified" but I don't understand which file it can't find.

[10:21:16 DEBUG] REQ (012) -> {parse}, File = "c:\Users\se-danhegn-01\repos\codetest\hello.fsx"
Data={"FileName":"c:\\Users\\se-danhegn-01\\repos\\codetest\\hello.fsx","IsAsync":true,"Lines":["let hello = \"hello\""],"Version":1}
[10:21:16 DEBUG] RES (012) <- {parse} in 73 ms: Kind={"info"}
Data="Request cancelled (exn was System.ComponentModel.Win32Exception (0x80004005): The system cannot find the file specified\r\n   at System.Diagnostics.Process.StartWithCreateProcess(ProcessStartInfo startInfo)\r\n   at System.Diagnostics.Process.Start()\r\n   at FsAutoComplete.Utils.runProcess(FSharpFunc`2 log, String workingDir, String exePath, String args) in D:\\Programowanie\\ionide\\paket-files\\github.com\\fsharp\\FsAutoComplete\\src\\FsAutoComplete.Core\\Utils.fs:line 532\r\n   at Dotnet.ProjInfo.Inspect.msbuild[a](MSBuildExePath msbuildExe, FSharpFunc`2 run, String project, FSharpList`1 args)\r\n   at Dotnet.ProjInfo.Inspect.getProjectInfoOldSdk[a,b,c,d](FSharpFunc`2 log, FSharpFunc`2 msbuildExec, FSharpFunc`2 getArgs, FSharpList`1 additionalArgs, a projPath)\r\n   at FsAutoComplete.NETFrameworkInfoProvider.getInfoFromMsbuild[a](FSharpFunc`2 getArgs, FSharpList`1 additionalProps) in D:\\Programowanie\\ionide\\paket-files\\github.com\\fsharp\\FsAutoComplete\\src\\FsAutoComplete.Core\\NETFrameworkInfoProvider.fs:line 46\r\n   at FsAutoComplete.NETFrameworkInfoProvider.getInstalledNETVersions() in D:\\Programowanie\\ionide\\paket-files\\github.com\\fsharp\\FsAutoComplete\\src\\FsAutoComplete.Core\\NETFrameworkInfoProvider.fs:line 90\r\n   at System.Lazy`1.ViaFactory(LazyThreadSafetyMode mode)\r\n--- End of stack trace from previous location where exception was thrown ---\r\n   at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw()\r\n   at System.Lazy`1.CreateValue()\r\n   at FsAutoComplete.Environment.netReferecesAssembliesTFMLatest() in D:\\Programowanie\\ionide\\paket-files\\github.com\\fsharp\\FsAutoComplete\\src\\FsAutoComplete.Core\\Environment.fs:line 144\r\n   at <StartupCode$FsAutoComplete-Core>.$[e-mail](Unit unitVar) in D:\\Programowanie\\ionide\\paket-files\\github.com\\fsharp\\FsAutoComplete\\src\\FsAutoComplete.Core\\CompilerServiceInterface.fs:line 510\r\n   at Microsoft.FSharp.Control.AsyncPrimitives.CallThenInvoke[T,TResult](AsyncActivation`1 ctxt, TResult result1, FSharpFunc`2 part2)\r\n   at Microsoft.FSharp.Control.Trampoline.Execute(FSharpFunc`2 firstAction))"
[10:21:16 DEBUG] REQ (013) -> {declarations}, File = "c:\Users\se-danhegn-01\repos\codetest\hello.fsx"
Data={"FileName":"c:\\Users\\se-danhegn-01\\repos\\codetest\\hello.fsx","Lines":["let hello = \"hello\""],"Version":0}
[10:21:16 DEBUG] RES (013) <- {declarations} in 3 ms: Kind={"declarations"}
Data=[{"Declaration":{"UniqueName":"Hello_1_of_1","Name":"Hello","Glyph":"Module","GlyphChar":"N","IsTopLevel":true,"Range":{"StartColumn":1,"StartLine":1,"EndColumn":1,"EndLine":2},"BodyRange":{"StartColumn":1,"StartLine":1,"EndColumn":20,"EndLine":1},"File":"c:\\Users\\se-danhegn-01\\repos\\codetest\\hello.fsx","EnclosingEntity":"M","IsAbstract":false},"Nested":[{"UniqueName":"Hello_1_of_1","Name":"hello","Glyph":"Field","GlyphChar":"F","IsTopLevel":false,"Range":{"StartColumn":5,"StartLine":1,"EndColumn":20,"EndLine":1},"BodyRange":{"StartColumn":5,"StartLine":1,"EndColumn":20,"EndLine":1},"File":"c:\\Users\\se-danhegn-01\\repos\\codetest\\hello.fsx","EnclosingEntity":"M","IsAbstract":false}]}]

[marco-m]

Same for me (no codelens, no intellisense) on

• macOS 10.14.1
• vscode 1.29.1
• ionide 3.30.0
• mono 5.16

[Paludan]

Same for me (no codelens, no intellisense) on

• macOS 10.14.1
• vscode 1.29.1
• ionide 3.30.0
• mono 5.16

I have been able to get it working on my MacBook using macOS Monjave. I use the following settings
{ "FSharp.fsiFilePath": "/Library/Frameworks/Mono.framework/Versions/Current/Commands/fsharpi", "FSharp.monoPath": "/Library/Frameworks/Mono.framework/Versions/Current/Commands/mono", "FSharp.msbuildLocation": "/Library/Frameworks/Mono.framework/Versions/Current/Commands/msbuild", "FSharp.fsacRuntime": "netcore" }

[marco-m]

@Paludan that was it! thanks! To summarize for other pool souls googling, this is valid only for macOS:

1. install mono
2. install dot net core (yes, both!)
3. use the settings proposed by @paludan above. Dot net core is used by "FSharp.fsacRuntime": "netcore".
   If I don't install dot net core and so use "FSharp.fsacRuntime": "net", I don't get codelens nor intellisense.

[Paludan]

@Paludan that was it! thanks! To summarize for other pool souls googling, this is valid only for macOS:

1. install mono
2. install dot net core (yes, both!)
3. use the settings proposed by @Paludan above. Dot net core is used by "FSharp.fsacRuntime": "netcore".
   If I don't install dot net core and so use "FSharp.fsacRuntime": "net", I don't get codelens nor intellisense.

Yeah I looked at the console output, and saw the dotnet: null message. This prompted me so think "Uh well I don't have it installed", and so I installed it and set the FSAC runtime to use netcore. Voila!

[Rhywun]

I can confirm that adding the suggested lines to the settings file results in Intellisense working again on macOS. Thanks, @Paludan

PS. I already had all the required software installed. The difference seems to be that this version of the plugin requires manually setting these paths.

[memoricab]

I followed above instructions. Everything[Ionide and Fsi] works fine now. Thank you.

Steps that I followed [OS: Ubuntu 18.04 bionic; Ionide Version: 3.30 ]

1. Download .NET core from here
2. Configured settings.json as below.
   { "FSharp.fsiFilePath": "/usr/lib/mono/fsharp/fsi.exe", "FSharp.monoPath": "/usr/bin/mono", "FSharp.msbuildLocation": "/usr/lib/mono/msbuild", "FSharp.fsacRuntime": "netcore" }

I hope you guys get working ionide as well. :)

Nb: As @Rhywun mentioned after Ionide v3.29, it requires to set paths manually and _additionally we have also changed fsacRuntime to netcore in order to run without problem._

[Paludan]

Looks like my solution works for Linux as well then (of course with altered paths) I suppose this can be marked as solved.

[Krzysztof-Cieslak]

TBF, I'm not super happy about that, and I'm not really sure why some of those are required... but well, I'm glad that you've found solutions. Sorry for all the troubles.