LSP Issues

[benbellick]

Hey! Thanks for the awesome work :)

One reason I'm interested in this project is because LSP support for ReasonML is not working as expected on react components. So I tried cloning this template and fired up my lsp, which is Emacs' Eglot (using ocamllsp). And I encountered the following error immediately on startup:

[jsonrpc] e[12:10:55.998] --> initialize[1] {"jsonrpc":"2.0","id":1,"method":"initialize","params":{"processId":75247,"clientInfo":{"name":"Eglot","version":"1.16"},"rootPath":"/Users/benjaminbellick/work/melange-mlx-template/","rootUri":"file:///Users/benjaminbellick/work/melange-mlx-template","initializationOptions":{},"capabilities":{"workspace":{"applyEdit":true,"executeCommand":{"dynamicRegistration":false},"workspaceEdit":{"documentChanges":true},"didChangeWatchedFiles":{"dynamicRegistration":true},"symbol":{"dynamicRegistration":false},"configuration":true,"workspaceFolders":true},"textDocument":{"synchronization":{"dynamicRegistration":false,"willSave":true,"willSaveWaitUntil":true,"didSave":true},"completion":{"dynamicRegistration":false,"completionItem":{"snippetSupport":true,"deprecatedSupport":true,"resolveSupport":{"properties":["documentation","details","additionalTextEdits"]},"tagSupport":{"valueSet":[1]}},"contextSupport":true},"hover":{"dynamicRegistration":false,"contentFormat":["markdown","plaintext"]},"signatureHelp":{"dynamicRegistration":false,"signatureInformation":{"parameterInformation":{"labelOffsetSupport":true},"documentationFormat":["markdown","plaintext"],"activeParameterSupport":true}},"references":{"dynamicRegistration":false},"definition":{"dynamicRegistration":false,"linkSupport":true},"declaration":{"dynamicRegistration":false,"linkSupport":true},"implementation":{"dynamicRegistration":false,"linkSupport":true},"typeDefinition":{"dynamicRegistration":false,"linkSupport":true},"documentSymbol":{"dynamicRegistration":false,"hierarchicalDocumentSymbolSupport":true,"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":false},"codeAction":{"dynamicRegistration":false,"resolveSupport":{"properties":["edit","command"]},"dataSupport":true,"codeActionLiteralSupport":{"codeActionKind":{"valueSet":["quickfix","refactor","refactor.extract","refactor.inline","refactor.rewrite","source","source.organizeImports"]}},"isPreferredSupport":true},"formatting":{"dynamicRegistration":false},"rangeFormatting":{"dynamicRegistration":false},"rename":{"dynamicRegistration":false},"inlayHint":{"dynamicRegistration":false},"publishDiagnostics":{"relatedInformation":false,"codeDescriptionSupport":false,"tagSupport":{"valueSet":[1,2]}}},"window":{"showDocument":{"support":true},"workDoneProgress":true},"general":{"positionEncodings":["utf-32","utf-8","utf-16"]},"experimental":{}},"workspaceFolders":[{"uri":"file:///Users/benjaminbellick/work/melange-mlx-template","name":"~/work/melange-mlx-template/"}]}}
[jsonrpc] e[12:10:56.042] <-- initialize[1] {"id":1,"jsonrpc":"2.0","result":{"capabilities":{"codeActionProvider":{"codeActionKinds":["quickfix","refactor.inline","construct","destruct (enumerate cases)","inferred_intf","put module name in identifiers","remove module name from identifiers","remove type annotation","type-annotate"]},"codeLensProvider":{"resolveProvider":false},"completionProvider":{"resolveProvider":true,"triggerCharacters":[".","#"]},"declarationProvider":true,"definitionProvider":true,"documentFormattingProvider":true,"documentHighlightProvider":true,"documentSymbolProvider":true,"executeCommandProvider":{"commands":["ocamllsp/view-metrics","ocamllsp/open-related-source","ocamllsp/show-document-text","ocamllsp/show-merlin-config","dune/promote"]},"experimental":{"ocamllsp":{"interfaceSpecificLangId":true,"handleSwitchImplIntf":true,"handleInferIntf":true,"handleTypedHoles":true,"handleWrappingAstNode":true,"diagnostic_promotions":true,"handleHoverExtended":true,"handleMerlinCallCompatible":true,"handleTypeEnclosing":true,"handleGetDocumentation":true}},"foldingRangeProvider":true,"hoverProvider":true,"inlayHintProvider":true,"positionEncoding":"utf-8","referencesProvider":true,"renameProvider":{"prepareProvider":true},"selectionRangeProvider":true,"semanticTokensProvider":{"full":{"delta":true},"legend":{"tokenModifiers":["declaration","definition","readonly","static","deprecated","abstract","async","modification","documentation","defaultLibrary"],"tokenTypes":["namespace","type","class","enum","interface","struct","typeParameter","parameter","variable","property","enumMember","event","function","method","macro","keyword","modifier","comment","string","number","regexp","operator","decorator"]}},"signatureHelpProvider":{"triggerCharacters":[" ","~","?",":","("]},"textDocumentSync":{"change":2,"openClose":true,"save":{"includeText":false},"willSave":false,"willSaveWaitUntil":false},"typeDefinitionProvider":true,"workspace":{"workspaceFolders":{"changeNotifications":true,"supported":true}},"workspaceSymbolProvider":true},"serverInfo":{"name":"ocamllsp","version":"1.19.0"}}}
[jsonrpc] e[12:10:56.042] --> initialized {"jsonrpc":"2.0","method":"initialized","params":{}}
[jsonrpc] e[12:10:56.045] --> textDocument/didOpen {"jsonrpc":"2.0","method":"textDocument/didOpen","params":{"textDocument":{"uri":"file:///Users/benjaminbellick/work/melange-mlx-template/src/ReactApp.mlx","version":0,"languageId":"ocaml","text":"module App = struct\n  let[@react.component] make () =\n    [\"Hello \" ^ World.name ^ \"!\"; \"This is React!!\"]\n    |> List.map (fun greeting -> <h1 key=greeting> (React.string greeting) </h1>)\n    |> Array.of_list\n    |> React.array\nend\n\nlet () =\n  match ReactDOM.querySelector \"#root\" with\n  | Some element ->\n    let root = ReactDOM.Client.createRoot element in\n    ReactDOM.Client.render root <App />\n  | None ->\n    Js.Console.error \"Failed to start React: couldn't find the #root element\"\n"}}}
[jsonrpc] e[12:10:56.048] --> textDocument/didOpen {"jsonrpc":"2.0","method":"textDocument/didOpen","params":{"textDocument":{"uri":"file:///Users/benjaminbellick/work/melange-mlx-template/src/Hello.ml","version":0,"languageId":"ocaml","text":"let () = Js.log (\"Hello \" ^ World.name ^ \"!!\")\n"}}}
[jsonrpc] e[12:10:56.049] --> workspace/didChangeConfiguration {"jsonrpc":"2.0","method":"workspace/didChangeConfiguration","params":{"settings":{}}}
[stderr]  detached: /-----------------------------------------------------------------------
[stderr]  | Internal error: Uncaught exception.
[stderr]  | Unix.Unix_error(Unix.ENOENT, "create_process", "ocamlmerlin-mlx")
[stderr]  | Raised by primitive operation at Unix.create_process_gen.(fun) in file "unix.ml", line 922, characters 15-68
[stderr]  | Called from Stdlib__Fun.protect in file "fun.ml", line 34, characters 8-15
[stderr]  | Re-raised at Stdlib__Fun.protect in file "fun.ml", line 39, characters 6-52
[stderr]  | Called from Unix.create_process in file "unix.ml" (inlined), line 925, characters 2-66
[stderr]  | Called from Merlin_extend__Extend_driver.run in file "src/extend/extend_driver.ml", lines 26-28, characters 4-32
[stderr]  | Called from Merlin_kernel__Mreader_extend.start in file "src/kernel/mreader_extend.ml", line 52, characters 15-52
[stderr]  | Called from CamlinternalLazy.do_force_block in file "camlinternalLazy.ml", line 49, characters 17-27
[stderr]  | Re-raised at CamlinternalLazy.do_force_block in file "camlinternalLazy.ml", line 56, characters 4-11
[stderr]  | Called from CamlinternalLazy.force_lazy_block in file "camlinternalLazy.ml" (inlined), line 78, characters 27-67
[stderr]  | Called from Merlin_kernel__Mreader.try_with_reader in file "src/kernel/mreader.ml", line 107, characters 6-17
[stderr]  | Called from Merlin_kernel__Mreader.parse in file "src/kernel/mreader.ml", lines 166-167, characters 8-48
[stderr]  | Called from Merlin_kernel__Mpipeline.Reader_phase.f.(fun) in file "src/kernel/mpipeline.ml", line 156, characters 17-60
[stderr]  | Called from Merlin_kernel__Phase_cache.With_cache.apply in file "src/kernel/phase_cache.ml", line 33, characters 21-34
[stderr]  | Called from Merlin_kernel__Mpipeline.process in file "src/kernel/mpipeline.ml", lines 278-279, characters 12-48
[stderr]  | Called from CamlinternalLazy.do_force_block in file "camlinternalLazy.ml", line 49, characters 17-27
[stderr]  | Re-raised at CamlinternalLazy.do_force_block in file "camlinternalLazy.ml", line 56, characters 4-11
[stderr]  | Called from CamlinternalLazy.force_lazy_block in file "camlinternalLazy.ml" (inlined), line 78, characters 27-67
[stderr]  | Called from Merlin_kernel__Mpipeline.timed_lazy in file "src/kernel/mpipeline.ml", line 17, characters 10-22
[stderr]  | Re-raised at Merlin_kernel__Mpipeline.timed_lazy in file "src/kernel/mpipeline.ml", line 19, characters 34-49
[stderr]  | Called from CamlinternalLazy.do_force_block in file "camlinternalLazy.ml", line 49, characters 17-27
[stderr]  | Re-raised at CamlinternalLazy.do_force_block in file "camlinternalLazy.ml", line 56, characters 4-11
[stderr]  | Called from CamlinternalLazy.force_lazy_block in file "camlinternalLazy.ml" (inlined), line 78, characters 27-67
[stderr]  | Called from Merlin_kernel__Mpipeline.process in file "src/kernel/mpipeline.ml", lines 288-292, characters 10-12
[stderr]  | Called from CamlinternalLazy.do_force_block in file "camlinternalLazy.ml", line 49, characters 17-27
[stderr]  | Re-raised at CamlinternalLazy.do_force_block in file "camlinternalLazy.ml", line 56, characters 4-11
[stderr]  | Called from CamlinternalLazy.force_lazy_block in file "camlinternalLazy.ml" (inlined), line 78, characters 27-67
[stderr]  | Called from Merlin_kernel__Mpipeline.timed_lazy in file "src/kernel/mpipeline.ml", line 17, characters 10-22
[stderr]  | Re-raised at Merlin_kernel__Mpipeline.timed_lazy in file "src/kernel/mpipeline.ml", line 19, characters 34-49
[stderr]  | Called from CamlinternalLazy.do_force_block in file "camlinternalLazy.ml", line 49, characters 17-27
[stderr]  | Re-raised at CamlinternalLazy.do_force_block in file "camlinternalLazy.ml", line 56, characters 4-11
[stderr]  | Called from CamlinternalLazy.force_lazy_block in file "camlinternalLazy.ml" (inlined), line 78, characters 27-67
[stderr]  | Called from Merlin_kernel__Mpipeline.process in file "src/kernel/mpipeline.ml", line 312, characters 10-44
[stderr]  | Called from CamlinternalLazy.do_force_block in file "camlinternalLazy.ml", line 49, characters 17-27
[stderr]  | Re-raised at CamlinternalLazy.do_force_block in file "camlinternalLazy.ml", line 56, characters 4-11
[stderr]  | Called from CamlinternalLazy.force_lazy_block in file "camlinternalLazy.ml" (inlined), line 78, characters 27-67
[stderr]  | Called from Merlin_kernel__Mpipeline.timed_lazy in file "src/kernel/mpipeline.ml", line 17, characters 10-22
[stderr]  | Called from Merlin_kernel__Mpipeline.timed_lazy in file "src/kernel/mpipeline.ml", line 17, characters 10-22
[jsonrpc] e[12:10:56.375] <-- textDocument/publishDiagnostics {"params":{"diagnostics":[],"uri":"file:///Users/benjaminbellick/work/melange-mlx-template/src/Hello.ml"},"method":"textDocument/publishDiagnostics","jsonrpc":"2.0"}
[stderr]  | Re-raised at Merlin_kernel__Mpipeline.timed_lazy in file "src/kernel/mpipeline.ml", line 19, characters 34-49
[stderr]  | Called from CamlinternalLazy.do_force_block in file "camlinternalLazy.ml", line 49, characters 17-27
[stderr]  | Re-raised at CamlinternalLazy.do_force_block in file "camlinternalLazy.ml", line 56, characters 4-11
[stderr]  | Called from Merlin_kernel__Mpipeline.typer_result in file "src/kernel/mpipeline.ml" (inlined), line 141, characters 21-30
[stderr]  | Called from Query_commands.dispatch in file "src/frontend/query_commands.ml", line 671, characters 16-47
[stderr]  | Called from Ocaml_lsp_server__Diagnostics.merlin_diagnostics.(fun) in file "ocaml-lsp-server/src/diagnostics.ml", line 298, characters 12-52
[stderr]  | Called from Merlin_utils__Std.let_ref in file "src/utils/std.ml", line 695, characters 8-12
[stderr]  | Re-raised at Merlin_utils__Std.let_ref in file "src/utils/std.ml", line 697, characters 30-39
[stderr]  | Called from Merlin_utils__Misc.try_finally in file "src/utils/misc.ml", line 45, characters 8-15
[stderr]  | Re-raised at Merlin_utils__Misc.try_finally in file "src/utils/misc.ml", line 62, characters 10-24
[stderr]  | Called from Stdlib__Fun.protect in file "fun.ml", line 34, characters 8-15
[stderr]  | Re-raised at Stdlib__Fun.protect in file "fun.ml", line 39, characters 6-52
[stderr]  | Called from Merlin_kernel__Mocaml.with_state in file "src/kernel/mocaml.ml", line 18, characters 8-38
[stderr]  | Re-raised at Merlin_kernel__Mocaml.with_state in file "src/kernel/mocaml.ml", line 20, characters 42-53
[stderr]  | Called from Ocaml_lsp_server__Document.Single_pipeline.use_with_config.(fun) in file "ocaml-lsp-server/src/document.ml", line 161, characters 20-75
[stderr]  | Called from Stdune__Exn_with_backtrace.try_with in file "otherlibs/stdune/src/exn_with_backtrace.ml", line 9, characters 8-12
[stderr]  | Re-raised at Stdune__Exn.raise_with_backtrace in file "otherlibs/stdune/src/exn.ml" (inlined), line 38, characters 27-56
[stderr]  | Called from Stdune__Exn_with_backtrace.reraise in file "otherlibs/stdune/src/exn_with_backtrace.ml", line 20, characters 33-71
[stderr]  | Called from Fiber__Core.O.(>>|).(fun) in file "fiber/src/core.ml", line 250, characters 36-41
[stderr]  | Called from Fiber__Scheduler.exec in file "fiber/src/scheduler.ml", line 73, characters 8-11
[stderr]  \-----------------------------------------------------------------------
[stderr]  
[jsonrpc] e[12:10:56.567] --> textDocument/hover[2] {"jsonrpc":"2.0","id":2,"method":"textDocument/hover","params":{"textDocument":{"uri":"file:///Users/benjaminbellick/work/melange-mlx-template/src/ReactApp.mlx"},"position":{"line":9,"character":8}}}
[jsonrpc] e[12:10:56.569] --> textDocument/documentHighlight[3] {"jsonrpc":"2.0","id":3,"method":"textDocument/documentHighlight","params":{"textDocument":{"uri":"file:///Users/benjaminbellick/work/melange-mlx-template/src/ReactApp.mlx"},"position":{"line":9,"character":8}}}
[jsonrpc] e[12:10:56.570] --> textDocument/signatureHelp[4] {"jsonrpc":"2.0","id":4,"method":"textDocument/signatureHelp","params":{"textDocument":{"uri":"file:///Users/benjaminbellick/work/melange-mlx-template/src/ReactApp.mlx"},"position":{"line":9,"character":8}}}
[jsonrpc] e[12:10:56.597] <-- textDocument/hover[2] {"id":2,"jsonrpc":"2.0","error":{"data":{"exn":"Unix.Unix_error(Unix.ENOENT, \"create_process\", \"ocamlmerlin-mlx\")","backtrace":"Raised by primitive operation at Unix.create_process_gen.(fun) in file \"unix.ml\", line 922, characters 15-68\nCalled from Stdlib__Fun.protect in file \"fun.ml\", line 34, characters 8-15\nRe-raised at Stdlib__Fun.protect in file \"fun.ml\", line 39, characters 6-52\nCalled from Unix.create_process in file \"unix.ml\" (inlined), line 925, characters 2-66\nCalled from Merlin_extend__Extend_driver.run in file \"src/extend/extend_driver.ml\", lines 26-28, characters 4-32\nCalled from Merlin_kernel__Mreader_extend.start in file \"src/kernel/mreader_extend.ml\", line 52, characters 15-52\nCalled from CamlinternalLazy.do_force_block in file \"camlinternalLazy.ml\", line 49, characters 17-27\nRe-raised at CamlinternalLazy.do_force_block in file \"camlinternalLazy.ml\", line 56, characters 4-11\nCalled from CamlinternalLazy.force_lazy_block in file \"camlinternalLazy.ml\" (inlined), line 78, characters 27-67\nCalled from Merlin_kernel__Mreader.try_with_reader in file \"src/kernel/mreader.ml\", line 107, characters 6-17\nCalled from Merlin_kernel__Mreader.parse in file \"src/kernel/mreader.ml\", lines 166-167, characters 8-48\nCalled from Merlin_kernel__Mpipeline.Reader_phase.f.(fun) in file \"src/kernel/mpipeline.ml\", line 156, characters 17-60\nCalled from Merlin_kernel__Phase_cache.With_cache.apply in file \"src/kernel/phase_cache.ml\", line 33, characters 21-34\nCalled from Merlin_kernel__Mpipeline.process in file \"src/kernel/mpipeline.ml\", lines 278-279, characters 12-48\nCalled from CamlinternalLazy.do_force_block in file \"camlinternalLazy.ml\", line 49, characters 17-27\nRe-raised at CamlinternalLazy.do_force_block in file \"camlinternalLazy.ml\", line 56, characters 4-11\nCalled from CamlinternalLazy.force_lazy_block in file \"camlinternalLazy.ml\" (inlined), line 78, characters 27-67\nCalled from Merlin_kernel__Mpipeline.timed_lazy in file \"src/kernel/mpipeline.ml\", line 17, characters 10-22\nRe-raised at Merlin_kernel__Mpipeline.timed_lazy in file \"src/kernel/mpipeline.ml\", line 19, characters 34-49\nCalled from CamlinternalLazy.do_force_block in file \"camlinternalLazy.ml\", line 49, characters 17-27\nRe-raised at CamlinternalLazy.do_force_block in file \"camlinternalLazy.ml\", line 56, characters 4-11\nCalled from Merlin_kernel__Mpipeline.reader_parsetree in file \"src/kernel/mpipeline.ml\" (inlined), line 127, characters 25-35\nCalled from Ocaml_lsp_server__Hover_req.handle.(fun) in file \"ocaml-lsp-server/src/hover_req.ml\", line 440, characters 27-62\nCalled from Merlin_utils__Std.let_ref in file \"src/utils/std.ml\", line 695, characters 8-12\nRe-raised at Merlin_utils__Std.let_ref in file \"src/utils/std.ml\", line 697, characters 30-39\nCalled from Merlin_utils__Misc.try_finally in file \"src/utils/misc.ml\", line 45, characters 8-15\nRe-raised at Merlin_utils__Misc.try_finally in file \"src/utils/misc.ml\", line 62, characters 10-24\nCalled from Stdlib__Fun.protect in file \"fun.ml\", line 34, characters 8-15\nRe-raised at Stdlib__Fun.protect in file \"fun.ml\", line 39, characters 6-52\nCalled from Merlin_kernel__Mocaml.with_state in file \"src/kernel/mocaml.ml\", line 18, characters 8-38\nRe-raised at Merlin_kernel__Mocaml.with_state in file \"src/kernel/mocaml.ml\", line 20, characters 42-53\nCalled from Ocaml_lsp_server__Document.Single_pipeline.use_with_config.(fun) in file \"ocaml-lsp-server/src/document.ml\", line 161, characters 20-75\nCalled from Stdune__Exn_with_backtrace.try_with in file \"otherlibs/stdune/src/exn_with_backtrace.ml\", line 9, characters 8-12\nRe-raised at Stdune__Exn.raise_with_backtrace in file \"otherlibs/stdune/src/exn.ml\" (inlined), line 38, characters 27-56\nCalled from Stdune__Exn_with_backtrace.reraise in file \"otherlibs/stdune/src/exn_with_backtrace.ml\", line 20, characters 33-71\nCalled from Fiber__Core.O.(>>|).(fun) in file \"fiber/src/core.ml\", line 250, characters 36-41\nCalled from Fiber__Scheduler.exec in file \"fiber/src/scheduler.ml\", line 73, characters 8-11\nRe-raised at Stdune__Exn.raise_with_backtrace in file \"otherlibs/stdune/src/exn.ml\" (inlined), line 38, characters 27-56\nCalled from Stdune__Exn_with_backtrace.reraise in file \"otherlibs/stdune/src/exn_with_backtrace.ml\", line 20, characters 33-71\nCalled from Fiber__Scheduler.exec in file \"fiber/src/scheduler.ml\", line 73, characters 8-11\n"},"code":-32603,"message":"uncaught exception"}}
[jsonrpc] i[12:10:56.598] [2] error -32603 ignored: uncaught exception ignored
[jsonrpc] e[12:10:56.610] <-- textDocument/documentHighlight[3] {"id":3,"jsonrpc":"2.0","error":{"data":{"exn":"Unix.Unix_error(Unix.ENOENT, \"create_process\", \"ocamlmerlin-mlx\")","backtrace":"Raised by primitive operation at Unix.create_process_gen.(fun) in file \"unix.ml\", line 922, characters 15-68\nCalled from Stdlib__Fun.protect in file \"fun.ml\", line 34, characters 8-15\nRe-raised at Stdlib__Fun.protect in file \"fun.ml\", line 39, characters 6-52\nCalled from Unix.create_process in file \"unix.ml\" (inlined), line 925, characters 2-66\nCalled from Merlin_extend__Extend_driver.run in file \"src/extend/extend_driver.ml\", lines 26-28, characters 4-32\nCalled from Merlin_kernel__Mreader_extend.start in file \"src/kernel/mreader_extend.ml\", line 52, characters 15-52\nCalled from CamlinternalLazy.do_force_block in file \"camlinternalLazy.ml\", line 49, characters 17-27\nRe-raised at CamlinternalLazy.do_force_block in file \"camlinternalLazy.ml\", line 56, characters 4-11\nCalled from CamlinternalLazy.force_lazy_block in file \"camlinternalLazy.ml\" (inlined), line 78, characters 27-67\nCalled from Merlin_kernel__Mreader.try_with_reader in file \"src/kernel/mreader.ml\", line 107, characters 6-17\nCalled from Merlin_kernel__Mreader.parse in file \"src/kernel/mreader.ml\", lines 166-167, characters 8-48\nCalled from Merlin_kernel__Mpipeline.Reader_phase.f.(fun) in file \"src/kernel/mpipeline.ml\", line 156, characters 17-60\nCalled from Merlin_kernel__Phase_cache.With_cache.apply in file \"src/kernel/phase_cache.ml\", line 33, characters 21-34\nCalled from Merlin_kernel__Mpipeline.process in file \"src/kernel/mpipeline.ml\", lines 278-279, characters 12-48\nCalled from CamlinternalLazy.do_force_block in file \"camlinternalLazy.ml\", line 49, characters 17-27\nRe-raised at CamlinternalLazy.do_force_block in file \"camlinternalLazy.ml\", line 56, characters 4-11\nCalled from CamlinternalLazy.force_lazy_block in file \"camlinternalLazy.ml\" (inlined), line 78, characters 27-67\nCalled from Merlin_kernel__Mpipeline.timed_lazy in file \"src/kernel/mpipeline.ml\", line 17, characters 10-22\nRe-raised at Merlin_kernel__Mpipeline.timed_lazy in file \"src/kernel/mpipeline.ml\", line 19, characters 34-49\nCalled from CamlinternalLazy.do_force_block in file \"camlinternalLazy.ml\", line 49, characters 17-27\nRe-raised at CamlinternalLazy.do_force_block in file \"camlinternalLazy.ml\", line 56, characters 4-11\nCalled from CamlinternalLazy.force_lazy_block in file \"camlinternalLazy.ml\" (inlined), line 78, characters 27-67\nCalled from Merlin_kernel__Mpipeline.process in file \"src/kernel/mpipeline.ml\", lines 288-292, characters 10-12\nCalled from CamlinternalLazy.do_force_block in file \"camlinternalLazy.ml\", line 49, characters 17-27\nRe-raised at CamlinternalLazy.do_force_block in file \"camlinternalLazy.ml\", line 56, characters 4-11\nCalled from CamlinternalLazy.force_lazy_block in file \"camlinternalLazy.ml\" (inlined), line 78, characters 27-67\nCalled from Merlin_kernel__Mpipeline.timed_lazy in file \"src/kernel/mpipeline.ml\", line 17, characters 10-22\nRe-raised at Merlin_kernel__Mpipeline.timed_lazy in file \"src/kernel/mpipeline.ml\", line 19, characters 34-49\nCalled from CamlinternalLazy.do_force_block in file \"camlinternalLazy.ml\", line 49, characters 17-27\nRe-raised at CamlinternalLazy.do_force_block in file \"camlinternalLazy.ml\", line 56, characters 4-11\nCalled from Merlin_kernel__Mpipeline.final_config in file \"src/kernel/mpipeline.ml\" (inlined), line 139, characters 22-29\nCalled from Query_commands.dispatch in file \"src/frontend/query_commands.ml\", line 799, characters 17-48\nCalled from Merlin_utils__Std.let_ref in file \"src/utils/std.ml\", line 695, characters 8-12\nRe-raised at Merlin_utils__Std.let_ref in file \"src/utils/std.ml\", line 697, characters 30-39\nCalled from Merlin_utils__Misc.try_finally in file \"src/utils/misc.ml\", line 45, characters 8-15\nRe-raised at Merlin_utils__Misc.try_finally in file \"src/utils/misc.ml\", line 62, characters 10-24\nCalled from Stdlib__Fun.protect in file \"fun.ml\", line 34, characters 8-15\nRe-raised at Stdlib__Fun.protect in file \"fun.ml\", line 39, characters 6-52\nCalled from Merlin_kernel__Mocaml.with_state in file \"src/kernel/mocaml.ml\", line 18, characters 8-38\nRe-raised at Merlin_kernel__Mocaml.with_state in file \"src/kernel/mocaml.ml\", line 20, characters 42-53\nCalled from Ocaml_lsp_server__Document.Single_pipeline.use_with_config.(fun) in file \"ocaml-lsp-server/src/document.ml\", line 161, characters 20-75\nCalled from Stdune__Exn_with_backtrace.try_with in file \"otherlibs/stdune/src/exn_with_backtrace.ml\", line 9, characters 8-12\nRe-raised at Stdune__Exn.raise_with_backtrace in file \"otherlibs/stdune/src/exn.ml\" (inlined), line 38, characters 27-56\nCalled from Stdune__Exn_with_backtrace.reraise in file \"otherlibs/stdune/src/exn_with_backtrace.ml\", line 20, characters 33-71\nCalled from Fiber__Core.O.(>>|).(fun) in file \"fiber/src/core.ml\", line 250, characters 36-41\nCalled from Fiber__Scheduler.exec in file \"fiber/src/scheduler.ml\", line 73, characters 8-11\nRe-raised at Stdune__Exn.raise_with_backtrace in file \"otherlibs/stdune/src/exn.ml\" (inlined), line 38, characters 27-56\nCalled from Stdune__Exn_with_backtrace.reraise in file \"otherlibs/stdune/src/exn_with_backtrace.ml\", line 20, characters 33-71\nCalled from Fiber__Scheduler.exec in file \"fiber/src/scheduler.ml\", line 73, characters 8-11\n"},"code":-32603,"message":"uncaught exception"}}
[jsonrpc] i[12:10:56.610] [3] error -32603 ignored: uncaught exception ignored
[jsonrpc] e[12:10:56.620] <-- textDocument/signatureHelp[4] {"id":4,"jsonrpc":"2.0","error":{"data":{"exn":"Unix.Unix_error(Unix.ENOENT, \"create_process\", \"ocamlmerlin-mlx\")","backtrace":"Raised by primitive operation at Unix.create_process_gen.(fun) in file \"unix.ml\", line 922, characters 15-68\nCalled from Stdlib__Fun.protect in file \"fun.ml\", line 34, characters 8-15\nRe-raised at Stdlib__Fun.protect in file \"fun.ml\", line 39, characters 6-52\nCalled from Unix.create_process in file \"unix.ml\" (inlined), line 925, characters 2-66\nCalled from Merlin_extend__Extend_driver.run in file \"src/extend/extend_driver.ml\", lines 26-28, characters 4-32\nCalled from Merlin_kernel__Mreader_extend.start in file \"src/kernel/mreader_extend.ml\", line 52, characters 15-52\nCalled from CamlinternalLazy.do_force_block in file \"camlinternalLazy.ml\", line 49, characters 17-27\nRe-raised at CamlinternalLazy.do_force_block in file \"camlinternalLazy.ml\", line 56, characters 4-11\nCalled from CamlinternalLazy.force_lazy_block in file \"camlinternalLazy.ml\" (inlined), line 78, characters 27-67\nCalled from Merlin_kernel__Mreader.try_with_reader in file \"src/kernel/mreader.ml\", line 107, characters 6-17\nCalled from Merlin_kernel__Mreader.parse in file \"src/kernel/mreader.ml\", lines 166-167, characters 8-48\nCalled from Merlin_kernel__Mpipeline.Reader_phase.f.(fun) in file \"src/kernel/mpipeline.ml\", line 156, characters 17-60\nCalled from Merlin_kernel__Phase_cache.With_cache.apply in file \"src/kernel/phase_cache.ml\", line 33, characters 21-34\nCalled from Merlin_kernel__Mpipeline.process in file \"src/kernel/mpipeline.ml\", lines 278-279, characters 12-48\nCalled from CamlinternalLazy.do_force_block in file \"camlinternalLazy.ml\", line 49, characters 17-27\nRe-raised at CamlinternalLazy.do_force_block in file \"camlinternalLazy.ml\", line 56, characters 4-11\nCalled from CamlinternalLazy.force_lazy_block in file \"camlinternalLazy.ml\" (inlined), line 78, characters 27-67\nCalled from Merlin_kernel__Mpipeline.timed_lazy in file \"src/kernel/mpipeline.ml\", line 17, characters 10-22\nRe-raised at Merlin_kernel__Mpipeline.timed_lazy in file \"src/kernel/mpipeline.ml\", line 19, characters 34-49\nCalled from CamlinternalLazy.do_force_block in file \"camlinternalLazy.ml\", line 49, characters 17-27\nRe-raised at CamlinternalLazy.do_force_block in file \"camlinternalLazy.ml\", line 56, characters 4-11\nCalled from Merlin_kernel__Mpipeline.reader_comments in file \"src/kernel/mpipeline.ml\" (inlined), line 128, characters 24-34\nCalled from Ocaml_lsp_server__Check_for_comments.position_in_comment.(fun) in file \"ocaml-lsp-server/src/check_for_comments.ml\", line 16, characters 4-38\nCalled from Merlin_utils__Std.let_ref in file \"src/utils/std.ml\", line 695, characters 8-12\nRe-raised at Merlin_utils__Std.let_ref in file \"src/utils/std.ml\", line 697, characters 30-39\nCalled from Merlin_utils__Misc.try_finally in file \"src/utils/misc.ml\", line 45, characters 8-15\nRe-raised at Merlin_utils__Misc.try_finally in file \"src/utils/misc.ml\", line 62, characters 10-24\nCalled from Stdlib__Fun.protect in file \"fun.ml\", line 34, characters 8-15\nRe-raised at Stdlib__Fun.protect in file \"fun.ml\", line 39, characters 6-52\nCalled from Merlin_kernel__Mocaml.with_state in file \"src/kernel/mocaml.ml\", line 18, characters 8-38\nRe-raised at Merlin_kernel__Mocaml.with_state in file \"src/kernel/mocaml.ml\", line 20, characters 42-53\nCalled from Ocaml_lsp_server__Document.Single_pipeline.use_with_config.(fun) in file \"ocaml-lsp-server/src/document.ml\", line 161, characters 20-75\nCalled from Stdune__Exn_with_backtrace.try_with in file \"otherlibs/stdune/src/exn_with_backtrace.ml\", line 9, characters 8-12\nRe-raised at Stdune__Exn.raise_with_backtrace in file \"otherlibs/stdune/src/exn.ml\" (inlined), line 38, characters 27-56\nCalled from Stdune__Exn_with_backtrace.reraise in file \"otherlibs/stdune/src/exn_with_backtrace.ml\", line 20, characters 33-71\nCalled from Fiber__Core.O.(>>|).(fun) in file \"fiber/src/core.ml\", line 250, characters 36-41\nCalled from Fiber__Scheduler.exec in file \"fiber/src/scheduler.ml\", line 73, characters 8-11\nRe-raised at Stdune__Exn.raise_with_backtrace in file \"otherlibs/stdune/src/exn.ml\" (inlined), line 38, characters 27-56\nCalled from Stdune__Exn_with_backtrace.reraise in file \"otherlibs/stdune/src/exn_with_backtrace.ml\", line 20, characters 33-71\nCalled from Fiber__Scheduler.exec in file \"fiber/src/scheduler.ml\", line 73, characters 8-11\n"},"code":-32603,"message":"uncaught exception"}}
[jsonrpc] i[12:10:56.621] [4] error -32603 ignored: uncaught exception ignored

Any idea why this is going on? I saw this announcement of the project which mentioned the LSP functioning, but the template above does include the dune expression setting the dialect.

Thanks a ton!

[andreypopp]

Hi, you need to install ocamlmerlin-mlx package:

opam install ocamlmerlin-mlx

[0x6A6471]

Does ocamllsp support .mlx files? i can get the highlights working in neovim but having issues with the lsp config.

[DEBUG][2024-09-18 19:49:50] .../vim/lsp/rpc.lua:286	"rpc.send"	{  id = 4,  jsonrpc = "2.0",  method = "textDocument/hover",  params = {    position = {      character = 6,      line = 12    },    textDocument = {      uri = "file:///Users/<user>/path/to/project/client/src/ReactApp.mlx"    }  }}
[DEBUG][2024-09-18 19:49:50] .../vim/lsp/rpc.lua:408	"rpc.receive"	{  error = {    code = -32600,    message = "no document found with uri: file:///Users/<user>/path/to/project/client/src/ReactApp.mlx"  },  id = 4,  jsonrpc = "2.0"}

Sorry if this is off topic, I'm pretty new to the OCaml ecosystem but this project looks very cool. Thanks!

[andreypopp]

@jakequinter do you use https://github.com/ocaml-mlx/ocaml_mlx.nvim plugin?

[andreypopp]

another thing to check is the version of ocaml-lsp-server package, only the recent version support .mlx

[0x6A6471]

so i was indeed on an older version of the ocaml compiler which resulted in an older version of ocaml-lsp-server. i've updated that to the latest which appears to be 1.19.0

I am using ocaml_mlx.nvim like this: https://github.com/jakequinter/configuration/blob/main/.config/nvim/lua/jdq/plugins/ocaml-mlx.lua

not sure if something in my lsp config is borked or something. I definitely don't expect you to look into it...I'm going to keep digging, but my ocaml lsp config does includes "ocaml_mlx": https://github.com/jakequinter/configuration/blob/main/.config/nvim/lua/jdq/plugins/lsp/lsp.lua#L106

[0x6A6471]

:LspInfo does seem to be picking everything up:

 Detected filetype:   ocaml_mlx

 Client: ocamllsp (id: 2, bufnr: [13])
 	filetypes:       ocaml, ocaml_mlx
 	autostart:       true
 	root directory:  /path/to/project/ocaml/hitched/client
 	cmd:             /Users/<user>/.local/share/nvim/mason/bin/ocamllsp

although i think the problem may be related to it using mason. may need to look at trying to get it to default to the cwd

[0x6A6471]

figured it out. just incase anyone is viewing this in the future, i needed to tell vim that the filetype of "ocaml_mlx" should return "ocaml"

something like:

if filetype == "ocaml_mlx" then
    return "ocaml"
end

thanks for the help andreypopp and a huge thanks for the great work!

[Josef-Thorne-A]

I'm having issues on emacs -- I followed the instructions on the ocaml page, here: pinned dev versions of merlin, lsp, json-rpc, etc. from github but I get this error continuously: https://ocaml.org/p/ocamlmerlin-mlx/0.9

LSP :: Error from the Language Server: unsupported file extension (Invalid Request)

Everything else with emacs and mlx works perfectly though!