Using LanguageServer.jl with eglot in emacs

non-Jedi · April 14, 2020, 6:46pm

I’ve updated eglot-jl to use the latest release of LanguageServer.jl (so it’s now compatible with julia 1.4) and have been using it for the past 24 hours with no issues so far. I’ve also cleaned up the code for locking eglot-jl to a specific version of LanguageServer.jl so that it should get the correct version even if LanguageServer.jl is installed in your default environment.

Big kudos to @ZacLN and @davidanthoff for the work on the language server in recent months. It seems much more stable to me now. In particular, the parallel symbol server caching is a big win for usability (no longer have to wait multiple hours for the symbol server to process all dependencies before getting a usable language server).

Give it a try and let me know if any problems. If you’ve been using lsp-julia, this a great chance to give the other side of the fence a try until julia 1.4 support is ironed out. I’ve updated the LanguageServer.jl wiki with a description of the capabilities that are currently working.

4aHxKzD · May 1, 2020, 5:39pm

I’ve been using eglot with eglot-jl lately and it has improved a lot since I first tried it. Now it helps instead of getting in the way!

non-Jedi · May 1, 2020, 6:19pm

Since this thread keeps popping up (mostly my fault) and I’m unable to edit the OP anymore, would somebody with discourse moderator rights be willing to edit this link into the OP?

Glad it’s working better for you now; I’ve experienced roughly the same thing in the past month (no longer a hinderance).

non-Jedi · June 5, 2020, 12:47pm

@ffevotte has contributed tooling to make using LanguageServer.jl compiled by PackageCompiler simple with eglot. I would appreciate if anyone who is interested in the significantly alleviated startup time this gives (from 15 seconds down to less than 1) could test out his branch before I merge to master so that we can work out any bugs.

github.com/non-Jedi/eglot-jl

Simplify/automate the compilation and use of a system image

non-Jedi:master ← ffevotte:ff/sysimage

opened 08:08PM - 15 May 20 UTC

ffevotte

+199 -20

The following PR introduces features helping compile and use custom system image…s for LanguageServer and SymbolServer. The expected benefits are reduced start-up times for the language server. On my (old-ish) machine, start-up times are reduced from 20 seconds to less than 2. On a newer machine where I also tested this, times went from 15 seconds down to less than 1. The idea is the following: - `eglot-jl.jl` looks at the `EGLOT_JL_TEST` environment variable; when it is set, the server is configured to read from an IOBuffer that sends it an `exit` instruction as soon as it is able to process requests. This allows `eglot-jl.jl` to be used as a `precompile_execution_file` that exercises the (language) server before gracefully exiting. - a `compile.jl` script automates the generation of a system image, named after the julia version (and having the relevant extension depending on the OS). This is what the first commit in this PR introduces, alongside with instructions in `README.org` explaining how to compile the system image, and set `eglot-jl-julia-args` to use it. The second commit goes a step further: it automates the search for a suitable system image at server startup, in order to use it if one is found. - a first call to julia allows getting the version number. This involves something like 0.1s additional latency before the server is run, which I think is acceptable but is nevertheless quite a large amount of time for such an insignificant-looking task - a suitable system image is looked for, based on the version number; if one is found, the corresponding `--sysimage` command-line switch is generated. If not, nothing happens; no system image is used, so users who have not generated any system image will not be impacted by this. - the whole process handling system images can be deactivated using a new `eglot-jl-enable-sysimage` customizable option. This allows users to opt out of the system, even if they have previously generated a system image (for example in case it would become stale for some reason). It also completely removes the julia version overhead. Additionally, a new autoloaded command allows running the system image generation script from within emacs. The same command could be used to re-generate a system image if the previous one caused problems for any reason. This is documented in `README.org`. I've tested this with Julia 1.3 and 1.4, on Windows and Linux, without encountering any problem (I don't have access to a Mac). I know you were reluctant to handle system images in `eglot-jl`, and were (rightfully) especially concerned about possible ways that a system image would become obsolete. I tried making this implementation as robust as possible, but I might very well have overlooked something. So please do not hesitate to tell me if something bothers you with this proposal.

4aHxKzD · June 5, 2020, 2:50pm

based on a quick test, works crazy fast for me!

ffevotte · June 5, 2020, 4:43pm

Glad to hear that! What type of system did you try this on?

I’d really like it if a MacOS user could try it, since I have not been able to test on this OS…

4aHxKzD · June 5, 2020, 4:49pm

manjaro linux, but I’ll try it on macOS when I have the time.

dlakelan · June 5, 2020, 11:54pm

This sounds all kinds of awesome… I’m a more or less old-school emacs user and haven’t kept up with newer emacs features… How do I get this installed effectively?

I installed eglot-jl from MELPA, am in a julia buffer with julia mode and company mode on, and I get:

[jsonrpc] Server exited with status 1
error in process sentinel: eglot--error: [eglot] -1: Server died
error in process sentinel: [eglot] -1: Server died

Running julia 1.4.1 and emacs-gtk 1:26.3+1-2 on Debian testing.

non-Jedi · June 5, 2020, 11:59pm

Could you post the contents of the "EGLOT (Env/julia-mode) events buffer please?

dlakelan · June 6, 2020, 12:01am

Sure!

[client-request] (id:1) Fri Jun  5 16:49:51 2020:
(:jsonrpc "2.0" :id 1 :method "initialize" :params
	  (:processId 3314088 :rootPath "/home/dlakelan/Consulting/LakelandAppliedSciLLC/JuliaDataTutorials/" :rootUri "file:///home/dlakelan/Consulting/LakelandAppliedSciLLC/JuliaDataTutorials/" :initializationOptions nil :capabilities
		      (:workspace
		       (:applyEdit t :executeCommand
				   (:dynamicRegistration :json-false)
				   :workspaceEdit
				   (:documentChanges :json-false)
				   :didChangeWatchedFiles
				   (:dynamicRegistration t)
				   :symbol
				   (:dynamicRegistration :json-false)
				   :configuration t)
		       :textDocument
		       (:synchronization
			(:dynamicRegistration :json-false :willSave t :willSaveWaitUntil t :didSave t)
			:completion
			(:dynamicRegistration :json-false :completionItem
					      (:snippetSupport :json-false)
					      :contextSupport t)
			:hover
			(:dynamicRegistration :json-false :contentFormat
					      ["plaintext"])
			:signatureHelp
			(:dynamicRegistration :json-false :signatureInformation
					      (:parameterInformation
					       (:labelOffsetSupport t)))
			:references
			(:dynamicRegistration :json-false)
			:definition
			(:dynamicRegistration :json-false)
			:declaration
			(:dynamicRegistration :json-false)
			:implementation
			(:dynamicRegistration :json-false)
			:typeDefinition
			(:dynamicRegistration :json-false)
			:documentSymbol
			(:dynamicRegistration :json-false :hierarchicalDocumentSymbolSupport t :symbolKind
					      (:valueSet
					       [1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26]))
			:documentHighlight
			(:dynamicRegistration :json-false)
			:codeAction
			(:dynamicRegistration :json-false :codeActionLiteralSupport
					      (:codeActionKind
					       (:valueSet
						["quickfix" "refactor" "refactor.extract" "refactor.inline" "refactor.rewrite" "source" "source.organizeImports"])))
			:formatting
			(:dynamicRegistration :json-false)
			:rangeFormatting
			(:dynamicRegistration :json-false)
			:rename
			(:dynamicRegistration :json-false)
			:publishDiagnostics
			(:relatedInformation :json-false))
		       :experimental nil)))
[stderr] nil
[stderr]    Updating registry at `~/.julia/registries/General`
[stderr] nil
[stderr]    Updating git-repo `https://github.com/JuliaRegistries/General.git`
[stderr] nil
[stderr]   Installed FilePathsBase ── v0.9.2
[stderr]   Installed StaticLint ───── v4.3.0
[stderr]   Installed LanguageServer ─ v3.0.0
[stderr]   Installed SymbolServer ─── v4.4.0
[stderr] nil
[stderr] nil
[stderr] ERROR: LoadError: could not open file /home/dlakelan/.julia/packages/DocumentFormat/sra7h/src/utils.jl
[stderr] ERROR: LoadError: could not open file /home/dlakelan/.julia/packages/DocumentFormat/sra7h/src/utils.jl
[stderr] Stacktrace:
[stderr] Stacktrace:
[stderr] nil
[stderr] nil
[stderr]  [1] include(::Module, ::String) at ./Base.jl:377
[stderr]  [2] include(::String) at /home/dlakelan/.julia/packages/DocumentFormat/sra7h/src/DocumentFormat.jl:1
[stderr]  [3] top-level scope at /home/dlakelan/.julia/packages/DocumentFormat/sra7h/src/DocumentFormat.jl:198
[stderr]  [4] include(::Module, ::String) at ./Base.jl:377
[stderr]  [5] top-level scope at none:2
[stderr]  [6] eval at ./boot.jl:331 [inlined]
[stderr]  [7] eval(::Expr) at ./client.jl:449
[stderr]  [8] top-level scope at ./none:3
[stderr] in expression starting at /home/dlakelan/.julia/packages/DocumentFormat/sra7h/src/DocumentFormat.jl:198
[stderr] nil
[stderr] nil
[stderr] ERROR: LoadError: Failed to precompile DocumentFormat [ffa9a821-9c82-50df-894e-fbcef3ed31cd] to /home/dlakelan/.julia/compiled/v1.4/DocumentFormat/JgtLh_V7OMW.ji.
[stderr] ERROR: LoadError: Failed to precompile DocumentFormat [ffa9a821-9c82-50df-894e-fbcef3ed31cd] to /home/dlakelan/.julia/compiled/v1.4/DocumentFormat/JgtLh_V7OMW.ji.
[stderr] Stacktrace:
[stderr] Stacktrace:
[stderr] nil
[stderr]  [1] error(::String) at ./error.jl:33
[stderr]  [2] compilecache(::Base.PkgId, ::String) at ./loading.jl:1272
[stderr]  [3] _require(::Base.PkgId) at ./loading.jl:1029
[stderr]  [4] require(::Base.PkgId) at ./loading.jl:927
[stderr]  [5] require(::Module, ::Symbol) at ./loading.jl:922
[stderr]  [6] include(::Module, ::String) at ./Base.jl:377
[stderr]  [7] top-level scope at none:2
[stderr]  [8] eval at ./boot.jl:331 [inlined]
[stderr]  [9] eval(::Expr) at ./client.jl:449
[stderr]  [10] top-level scope at ./none:3
[stderr] in expression starting at /home/dlakelan/.julia/packages/LanguageServer/mpNvN/src/LanguageServer.jl:3
[stderr] nil
[stderr] nil
[stderr] ERROR: LoadError: Failed to precompile LanguageServer [2b0e0bc5-e4fd-59b4-8912-456d1b03d8d7] to /home/dlakelan/.julia/compiled/v1.4/LanguageServer/ite7n_V7OMW.ji.
[stderr] ERROR: LoadError: Failed to precompile LanguageServer [2b0e0bc5-e4fd-59b4-8912-456d1b03d8d7] to /home/dlakelan/.julia/compiled/v1.4/LanguageServer/ite7n_V7OMW.ji.
[stderr] Stacktrace:
[stderr] Stacktrace:
[stderr] nil
[stderr] nil
[stderr] nil
[stderr] nil
[stderr]  [1] error(::String) at ./error.jl:33
[stderr]  [2] compilecache(::Base.PkgId, ::String) at ./loading.jl:1272
[stderr]  [3] _require(::Base.PkgId) at ./loading.jl:1029
[stderr]  [4] require(::Base.PkgId) at ./loading.jl:927
[stderr]  [5] require(::Module, ::Symbol) at ./loading.jl:922
[stderr]  [6] include(::Module, ::String) at ./Base.jl:377
[stderr]  [7] exec_options(::Base.JLOptions) at ./client.jl:288
[stderr]  [8] _start() at ./client.jl:484
[stderr] in expression starting at /home/dlakelan/.emacs.d/elpa/eglot-jl-20200521.1739/eglot-jl.jl:33
[internal] Fri Jun  5 16:50:16 2020:
(:message "Connection state changed" :change "exited abnormally with code 1\n")

----------b---y---e---b---y---e----------
[stderr] 
[stderr] 
[stderr] nil
[stderr] nil
[stderr] Process EGLOT (JuliaDataTutorials/julia-mode) stderr finished
[client-request] (id:1) Fri Jun  5 16:50:27 2020:
(:jsonrpc "2.0" :id 1 :method "initialize" :params
	  (:processId 3314088 :rootPath "/home/dlakelan/Consulting/LakelandAppliedSciLLC/JuliaDataTutorials/" :rootUri "file:///home/dlakelan/Consulting/LakelandAppliedSciLLC/JuliaDataTutorials/" :initializationOptions nil :capabilities
		      (:workspace
		       (:applyEdit t :executeCommand
				   (:dynamicRegistration :json-false)
				   :workspaceEdit
				   (:documentChanges :json-false)
				   :didChangeWatchedFiles
				   (:dynamicRegistration t)
				   :symbol
				   (:dynamicRegistration :json-false)
				   :configuration t)
		       :textDocument
		       (:synchronization
			(:dynamicRegistration :json-false :willSave t :willSaveWaitUntil t :didSave t)
			:completion
			(:dynamicRegistration :json-false :completionItem
					      (:snippetSupport :json-false)
					      :contextSupport t)
			:hover
			(:dynamicRegistration :json-false :contentFormat
					      ["plaintext"])
			:signatureHelp
			(:dynamicRegistration :json-false :signatureInformation
					      (:parameterInformation
					       (:labelOffsetSupport t)))
			:references
			(:dynamicRegistration :json-false)
			:definition
			(:dynamicRegistration :json-false)
			:declaration
			(:dynamicRegistration :json-false)
			:implementation
			(:dynamicRegistration :json-false)
			:typeDefinition
			(:dynamicRegistration :json-false)
			:documentSymbol
			(:dynamicRegistration :json-false :hierarchicalDocumentSymbolSupport t :symbolKind
					      (:valueSet
					       [1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26]))
			:documentHighlight
			(:dynamicRegistration :json-false)
			:codeAction
			(:dynamicRegistration :json-false :codeActionLiteralSupport
					      (:codeActionKind
					       (:valueSet
						["quickfix" "refactor" "refactor.extract" "refactor.inline" "refactor.rewrite" "source" "source.organizeImports"])))
			:formatting
			(:dynamicRegistration :json-false)
			:rangeFormatting
			(:dynamicRegistration :json-false)
			:rename
			(:dynamicRegistration :json-false)
			:publishDiagnostics
			(:relatedInformation :json-false))
		       :experimental nil)))
[stderr] nil
[stderr] nil
[stderr] ERROR: LoadError: could not open file /home/dlakelan/.julia/packages/DocumentFormat/sra7h/src/utils.jl
[stderr] ERROR: LoadError: could not open file /home/dlakelan/.julia/packages/DocumentFormat/sra7h/src/utils.jl
[stderr] Stacktrace:
[stderr] Stacktrace:
[stderr] nil
[stderr] nil
[stderr]  [1] include(::Module, ::String) at ./Base.jl:377
[stderr]  [2] include(::String) at /home/dlakelan/.julia/packages/DocumentFormat/sra7h/src/DocumentFormat.jl:1
[stderr]  [3] top-level scope at /home/dlakelan/.julia/packages/DocumentFormat/sra7h/src/DocumentFormat.jl:198
[stderr]  [4] include(::Module, ::String) at ./Base.jl:377
[stderr]  [5] top-level scope at none:2
[stderr]  [6] eval at ./boot.jl:331 [inlined]
[stderr]  [7] eval(::Expr) at ./client.jl:449
[stderr]  [8] top-level scope at ./none:3
[stderr] in expression starting at /home/dlakelan/.julia/packages/DocumentFormat/sra7h/src/DocumentFormat.jl:198
[stderr] nil
[stderr] nil
[stderr] ERROR: LoadError: Failed to precompile DocumentFormat [ffa9a821-9c82-50df-894e-fbcef3ed31cd] to /home/dlakelan/.julia/compiled/v1.4/DocumentFormat/JgtLh_V7OMW.ji.
[stderr] ERROR: LoadError: Failed to precompile DocumentFormat [ffa9a821-9c82-50df-894e-fbcef3ed31cd] to /home/dlakelan/.julia/compiled/v1.4/DocumentFormat/JgtLh_V7OMW.ji.
[stderr] Stacktrace:
[stderr] Stacktrace:
[stderr] nil
[stderr]  [1] error(::String) at ./error.jl:33
[stderr]  [2] compilecache(::Base.PkgId, ::String) at ./loading.jl:1272
[stderr]  [3] _require(::Base.PkgId) at ./loading.jl:1029
[stderr]  [4] require(::Base.PkgId) at ./loading.jl:927
[stderr]  [5] require(::Module, ::Symbol) at ./loading.jl:922
[stderr]  [6] include(::Module, ::String) at ./Base.jl:377
[stderr]  [7] top-level scope at none:2
[stderr]  [7] top-level scope at none:2
[stderr]  [8] eval at ./boot.jl:331 [inlined]
[stderr]  [9] eval(::Expr) at ./client.jl:449
[stderr]  [10] top-level scope at ./none:3
[stderr] in expression starting at /home/dlakelan/.julia/packages/LanguageServer/mpNvN/src/LanguageServer.jl:3
[stderr] nil
[stderr] nil
[stderr] ERROR: LoadError: Failed to precompile LanguageServer [2b0e0bc5-e4fd-59b4-8912-456d1b03d8d7] to /home/dlakelan/.julia/compiled/v1.4/LanguageServer/ite7n_V7OMW.ji.
[stderr] ERROR: LoadError: Failed to precompile LanguageServer [2b0e0bc5-e4fd-59b4-8912-456d1b03d8d7] to /home/dlakelan/.julia/compiled/v1.4/LanguageServer/ite7n_V7OMW.ji.
[stderr] Stacktrace:
[stderr] Stacktrace:
[stderr] nil
[stderr] nil
[stderr] nil
[stderr] nil
[stderr]  [1] error(::String) at ./error.jl:33
[stderr]  [2] compilecache(::Base.PkgId, ::String) at ./loading.jl:1272
[stderr]  [3] _require(::Base.PkgId) at ./loading.jl:1029
[stderr]  [4] require(::Base.PkgId) at ./loading.jl:927
[stderr]  [5] require(::Module, ::Symbol) at ./loading.jl:922
[stderr]  [6] include(::Module, ::String) at ./Base.jl:377
[stderr]  [7] exec_options(::Base.JLOptions) at ./client.jl:288
[stderr]  [8] _start() at ./client.jl:484
[stderr] in expression starting at /home/dlakelan/.emacs.d/elpa/eglot-jl-20200521.1739/eglot-jl.jl:33
[internal] Fri Jun  5 16:50:34 2020:
(:message "Connection state changed" :change "exited abnormally with code 1\n")

----------b---y---e---b---y---e----------
[stderr] 
[stderr] 
[stderr] nil
[stderr] nil
[stderr] Process EGLOT (JuliaDataTutorials/julia-mode) stderr<1> finished
[client-request] (id:1) Fri Jun  5 16:51:45 2020:
(:jsonrpc "2.0" :id 1 :method "initialize" :params
	  (:processId 3314088 :rootPath "/home/dlakelan/Consulting/LakelandAppliedSciLLC/JuliaDataTutorials/" :rootUri "file:///home/dlakelan/Consulting/LakelandAppliedSciLLC/JuliaDataTutorials/" :initializationOptions nil :capabilities
		      (:workspace
		       (:applyEdit t :executeCommand
				   (:dynamicRegistration :json-false)
				   :workspaceEdit
				   (:documentChanges :json-false)
				   :didChangeWatchedFiles
				   (:dynamicRegistration t)
				   :symbol
				   (:dynamicRegistration :json-false)
				   :configuration t)
		       :textDocument
		       (:synchronization
			(:dynamicRegistration :json-false :willSave t :willSaveWaitUntil t :didSave t)
			:completion
			(:dynamicRegistration :json-false :completionItem
					      (:snippetSupport :json-false)
					      :contextSupport t)
			:hover
			(:dynamicRegistration :json-false :contentFormat
					      ["plaintext"])
			:signatureHelp
			(:dynamicRegistration :json-false :signatureInformation
					      (:parameterInformation
					       (:labelOffsetSupport t)))
			:references
			(:dynamicRegistration :json-false)
			:definition
			(:dynamicRegistration :json-false)
			:declaration
			(:dynamicRegistration :json-false)
			:implementation
			(:dynamicRegistration :json-false)
			:typeDefinition
			(:dynamicRegistration :json-false)
			:documentSymbol
			(:dynamicRegistration :json-false :hierarchicalDocumentSymbolSupport t :symbolKind
					      (:valueSet
					       [1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26]))
			:documentHighlight
			(:dynamicRegistration :json-false)
			:codeAction
			(:dynamicRegistration :json-false :codeActionLiteralSupport
					      (:codeActionKind
					       (:valueSet
						["quickfix" "refactor" "refactor.extract" "refactor.inline" "refactor.rewrite" "source" "source.organizeImports"])))
			:formatting
			(:dynamicRegistration :json-false)
			:rangeFormatting
			(:dynamicRegistration :json-false)
			:rename
			(:dynamicRegistration :json-false)
			:publishDiagnostics
			(:relatedInformation :json-false))
		       :experimental nil)))
[stderr] nil
[stderr] nil
[stderr] ERROR: LoadError: could not open file /home/dlakelan/.julia/packages/DocumentFormat/sra7h/src/utils.jl
[stderr] ERROR: LoadError: could not open file /home/dlakelan/.julia/packages/DocumentFormat/sra7h/src/utils.jl
[stderr] Stacktrace:
[stderr] Stacktrace:
[stderr] nil
[stderr] nil
[stderr]  [1] include(::Module, ::String) at ./Base.jl:377
[stderr]  [2] include(::String) at /home/dlakelan/.julia/packages/DocumentFormat/sra7h/src/DocumentFormat.jl:1
[stderr]  [3] top-level scope at /home/dlakelan/.julia/packages/DocumentFormat/sra7h/src/DocumentFormat.jl:198
[stderr]  [4] include(::Module, ::String) at ./Base.jl:377
[stderr]  [5] top-level scope at none:2
[stderr]  [6] eval at ./boot.jl:331 [inlined]
[stderr]  [7] eval(::Expr) at ./client.jl:449
[stderr]  [8] top-level scope at ./none:3
[stderr] in expression starting at /home/dlakelan/.julia/packages/DocumentFormat/sra7h/src/DocumentFormat.jl:198
[stderr] nil
[stderr] nil
[stderr] ERROR: LoadError: Failed to precompile DocumentFormat [ffa9a821-9c82-50df-894e-fbcef3ed31cd] to /home/dlakelan/.julia/compiled/v1.4/DocumentFormat/JgtLh_V7OMW.ji.
[stderr] ERROR: LoadError: Failed to precompile DocumentFormat [ffa9a821-9c82-50df-894e-fbcef3ed31cd] to /home/dlakelan/.julia/compiled/v1.4/DocumentFormat/JgtLh_V7OMW.ji.
[stderr] Stacktrace:
[stderr] Stacktrace:
[stderr] nil
[stderr]  [1] error(::String) at ./error.jl:33
[stderr]  [2] compilecache(::Base.PkgId, ::String) at ./loading.jl:1272
[stderr]  [3] _require(::Base.PkgId) at ./loading.jl:1029
[stderr]  [4] require(::Base.PkgId) at ./loading.jl:927
[stderr]  [5] require(::Module, ::Symbol) at ./loading.jl:922
[stderr]  [6] include(::Module, ::String) at ./Base.jl:377
[stderr]  [7] top-level scope at none:2
[stderr]  [8] eval at ./boot.jl:331 [inlined]
[stderr]  [9] eval(::Expr) at ./client.jl:449
[stderr]  [10] top-level scope at ./none:3
[stderr] in expression starting at /home/dlakelan/.julia/packages/LanguageServer/mpNvN/src/LanguageServer.jl:3
[stderr] nil
[stderr] nil
[stderr] ERROR: LoadError: Failed to precompile LanguageServer [2b0e0bc5-e4fd-59b4-8912-456d1b03d8d7] to /home/dlakelan/.julia/compiled/v1.4/LanguageServer/ite7n_V7OMW.ji.
[stderr] ERROR: LoadError: Failed to precompile LanguageServer [2b0e0bc5-e4fd-59b4-8912-456d1b03d8d7] to /home/dlakelan/.julia/compiled/v1.4/LanguageServer/ite7n_V7OMW.ji.
[stderr] Stacktrace:
[stderr] Stacktrace:
[stderr] nil
[stderr] nil
[stderr] nil
[stderr]  [1] error(::String) at ./error.jl:33
[stderr]  [2] compilecache(::Base.PkgId, ::String) at ./loading.jl:1272
[stderr]  [3] _require(::Base.PkgId) at ./loading.jl:1029
[stderr]  [4] require(::Base.PkgId) at ./loading.jl:927
[stderr]  [5] require(::Module, ::Symbol) at ./loading.jl:922
[stderr]  [6] include(::Module, ::String) at ./Base.jl:377
[stderr]  [7] exec_options(::Base.JLOptions) at ./client.jl:288
[stderr]  [8] _start() at ./client.jl:484
[stderr] in expression starting at /home/dlakelan/.emacs.d/elpa/eglot-jl-20200521.1739/eglot-jl.jl:33
[internal] Fri Jun  5 16:51:50 2020:
(:message "Connection state changed" :change "exited abnormally with code 1\n")

----------b---y---e---b---y---e----------
[stderr] 
[stderr] 
[stderr] nil
[stderr] nil
[stderr] Process EGLOT (JuliaDataTutorials/julia-mode) stderr finished

orialb · June 6, 2020, 7:26am

I tested the sysimage branch on MacOS, it seems to work and indeed accelerate the startup time.

Not sure whether it matters but I tested it only on a mock project .

I am having some problems with the language server crashing on a real project (not related to this branch) which are probably related to LanguageServer.jl. I will try to open an issue. Is there a way to make eglot to not reconnect after a server crash? I would like to provide the relevant details from the event buffer but eglot just keeps reconnecting (and the server keeps crashing) swamping the event buffer with new info.

ffevotte · June 6, 2020, 11:06am

Thanks for testing!

You can try to customize eglot-autoreconnect:

(setq eglot-autoreconnect nil)

dlakelan · June 7, 2020, 2:33am

Does that EGLOT events buffer give any clue as to what happened?

non-Jedi · June 8, 2020, 12:27pm

It looks like your installation of DocumentFormat.jl in your ~/.julia depot is corrupted in some way. Run rm -fr /home/dlakelan/.julia/packages/DocumentFormat.jl/sra7h and then try eglot again (with long eglot-connect-timeout) to see if it works.

dlakelan · June 8, 2020, 3:15pm

Yeah, it looks like that worked. Weird.

I’m now getting eglot features, but I’m not seeing the pop-up completions from company mode. Is that supported?

non-Jedi · June 8, 2020, 3:22pm

Should be, ya. There’s a gif of it working with company in the README. Might just be that the symbol server is still indexing (can take literal hours). When it’s finished, you should see something like [ Info: Received new data from Julia Symbol Server. in the events buffer.

dlakelan · June 8, 2020, 3:26pm

Yay, I can’t wait… or rather I will wait and then be excited. Will check back if it’s still not doing its thing by tomorrow.

Ossifragus · July 25, 2020, 4:00pm

When I use the following code

server = LanguageServerInstance(stdin, stdout, true, "/home/ossifragus/.julia/environments/v1.4", "", Dict())

I got the following error. Did I do anything wrong? Thanks.

ERROR: MethodError: Cannot convert an object of type String to an object of type Function
Closest candidates are:
convert(::Type{T}, ::T) where T at essentials.jl:171
Stacktrace:
[1] convert(::Type{Union{Nothing, Function}}, ::String) at ./some.jl:34
[2] JSONRPC.JSONRPCEndpoint(::Base.TTY, ::Base.TTY, ::String) at /home/ossifragus/.julia/packages/JSONRPC/1Kq3H/src/core.jl:61
[3] LanguageServerInstance(::Base.TTY, ::Base.TTY, ::Bool, ::String, ::String, ::Dict{Any,Any}) at /home/ossifragus/.julia/packages/LanguageServer/y1ebo/src/languageserverinstance.jl:66
[4] top-level scope at REPL[5]:1

ellocco · December 1, 2022, 12:32pm

pfitzseb:

I’d recommend running something like

using LanguageServer, SymbolServer
server = LanguageServerInstance(stdin, stdout, true, "/home/you/.julia/environments/v1.1", "", Dict())
run(server)

Here is my version of your snipped:

using LanguageServer, SymbolServer
import Pkg

env_dir = joinpath(Pkg.envdir(), string("v", VERSION)[1:end-2])
server = LanguageServerInstance(stdin, stdout, true, env_dir, "", Dict())
run(server)

after the command server = ...
The error-message is:

ERROR: MethodError: no method matching JSONRPC.JSONRPCEndpoint(::Base.TTY, ::Base.TTY, ::Channel{Any}, ::Channel{Any}, ::Dict{String, Channel{Any}}, ::String, ::Symbol, ::Nothing, ::Nothing)
Closest candidates are:
  JSONRPC.JSONRPCEndpoint(::IOIn, ::IOOut, ::Channel{Any}, ::Channel{Any}, ::Dict{String, Channel{Any}}, ::Union{Nothing, Function}, ::Symbol, ::Union{Nothing, Task}, ::Union{Nothing, Task}) where {IOIn<:IO, IOOut<:IO} at C:\Users\stefanpofahl\.julia\packages\JSONRPC\P0G1p\src\core.jl:45
  JSONRPC.JSONRPCEndpoint(::Any, ::Any, ::Any) at C:\Users\stefanpofahl\.julia\packages\JSONRPC\P0G1p\src\core.jl:61
  JSONRPC.JSONRPCEndpoint(::Any, ::Any) at C:\Users\stefanpofahl\.julia\packages\JSONRPC\P0G1p\src\core.jl:61
Stacktrace:
 [1] JSONRPC.JSONRPCEndpoint(pipe_in::Base.TTY, pipe_out::Base.TTY, err_handler::String)
   @ JSONRPC C:\Users\stefanpofahl\.julia\packages\JSONRPC\P0G1p\src\core.jl:61
 [2] LanguageServerInstance(pipe_in::Base.TTY, pipe_out::Base.TTY, env_path::Bool, depot_path::String, err_handler::String, symserver_store_path::Dict{Any, Any}, download::Bool, symbolcache_upstream::Nothing) (repeats 2 times)
   @ LanguageServer C:\Users\stefanpofahl\.julia\packages\LanguageServer\0vsx2\src\languageserverinstance.jl:67
 [3] top-level scope
   @ REPL[7]:1

Can you reproduce my error? Julia version is: v1.8.3

tom-plaa · December 1, 2022, 1:13pm

I recommend using eglot-jl, and letting it download the server for you and keep it in its separate environment. I’ll share my configuration with you, @ellocco :


(require 'yasnippet)
(yas-reload-all)

(use-package vterm :ensure t)

(use-package julia-mode
    :mode "\\.jl\\'"
    :interpreter ("julia" . julia-mode)
    :init
    (setenv "JULIA_NUM_THREADS" "4")
    :config
    (add-hook 'julia-mode-hook 'company-mode)
    (add-hook 'julia-mode-hook #'yas-minor-mode)
    (add-hook 'julia-mode-hook 'julia-repl-mode)
    (add-hook 'julia-mode-hook (lambda () (setq julia-repl-set-terminal-backend 'vterm)))
    (add-hook 'julia-mode-hook 'eglot-jl-init)
    (add-hook 'julia-mode-hook 'eglot-ensure)
    (add-hook 'julia-mode-hook (lambda () (setq eglot-connect-timeout 120)))
    (add-hook 'julia-mode-hook (lambda () (setq eglot-autoshutdown t)))
    )

I have only left lines that might be relevant for julia editing.
You might want to change

setq eglot-connect-timeout 120

To some ridiculously higher number instead of 120 for the first time you try editing a .jl file, to allow it time to download and install the server code. See here: GitHub - non-Jedi/eglot-jl: Wrapper for using Julia LanguageServer.jl with emacs eglot