[windows] [vscode] RLS won't start due to $OCAMLLIB parse error

[bgoscinski]

@jaredly thanks again for solving #284. Now RLS breaks in different way. How can I help to narrow down the issue? AFAIK @zetashift faces the same problem but we're not sure if it's RLS or esy issue though.

1. as admin in powershell

git clone https://github.com/esy-ocaml/hello-reason.git
cd ./hello-reason
esy
code . # launch VSCode

2. In VS Code I get

Invalid response for esy -q sh -c 'echo $OCAMLLIB'

$OCAMLLIB': -c: line 0: unexpected EOF while looking for matching `''
$OCAMLLIB': -c: line 1: syntax error: unexpected end of file

node_modules/.lsp/debug.log

Hello - from c:\Users\ja\.vscode\extensions\jaredly.reason-vscode-1.7.1\bin.native.exe.hot.exe
Previous log location: C:\Users\ja\AppData\Local\Temp\lsp.log
Sending notification {"jsonrpc": "2.0", "method": "client/registerCapability", "params": {"registrations": [{"id": "watching", "method": "workspace/didChangeWatchedFiles", "registerOptions": {"watchers": [{"globPattern": "**/bsconfig.json"}, {"globPattern": "**/.merlin"}]}}]}}
Sending response {"id": 0, "jsonrpc": "2.0", "result": {"capabilities": {"textDocumentSync": 1, "hoverProvider": true, "completionProvider": {"resolveProvider": true, "triggerCharacters": ["."]}, "signatureHelpProvider": {"triggerCharacters": ["("]}, "definitionProvider": true, "typeDefinitionProvider": true, "referencesProvider": true, "documentSymbolProvider": true, "codeActionProvider": true, "executeCommandProvider": {"commands": ["reason-language-server.add_to_interface_inner"]}, "codeLensProvider": {"resolveProvider": true}, "documentHighlightProvider": true, "documentRangeFormattingProvider": true, "documentFormattingProvider": true, "documentFormattingProvider": true, "renameProvider": true}}}
Read message 
{"jsonrpc":"2.0","method":"initialized","params":{}}
Read message 
{"jsonrpc":"2.0","method":"workspace/didChangeConfiguration","params":{"settings":{"reason_language_server":{"location":"","build_system_override_by_root":{},"refmt":"","lispRefmt":"","format_width":80,"per_value_codelens":false,"dependencies_codelens":true,"opens_codelens":true,"show_module_path_on_hover":true,"reloadOnChange":false,"show_debug_errors":false,"autoRebuild":true,"useOldDuneProcess":true}}}}
Read message 
{"jsonrpc":"2.0","method":"textDocument/didOpen","params":{"textDocument":{"uri":"file:///c%3A/Users/ja/dev/hello-reason/lib/Util.re","languageId":"reason","version":1,"text":"let hello = () =>\n  Pastel.(\n    \n       \"Hello\" \n      \", \"\n       \"World\" \n      \"!\"\n    \n  );\n"}}}
Found a `dune` file at C:\Users\ja\dev\hello-reason\lib
]] Making a new jbuilder package at C:\Users\ja\dev\hello-reason\lib
=== Project root: C:\Users\ja\dev\hello-reason
Detected `esy` dependency manager for local use
Get ocaml stdlib dirs
Sending notification {"jsonrpc": "2.0", "method": "window/showMessage", "params": {"type": 1, "message": "Invalid response for esy -q sh -c 'echo $OCAMLLIB'\n\n$OCAMLLIB': -c: line 0: unexpected EOF while looking for matching `''\n$OCAMLLIB': -c: line 1: syntax error: unexpected end of file"}}
Found a `dune` file at C:\Users\ja\dev\hello-reason\lib
]] Making a new jbuilder package at C:\Users\ja\dev\hello-reason\lib
=== Project root: C:\Users\ja\dev\hello-reason
Detected `esy` dependency manager for local use
Get ocaml stdlib dirs
Read message 
{"jsonrpc":"2.0","id":1,"method":"textDocument/documentSymbol","params":{"textDocument":{"uri":"file:///c%3A/Users/ja/dev/hello-reason/lib/Util.re"}}}
[server] Got a method textDocument/documentSymbol
[server] processing took 0.ms
Found a `dune` file at C:\Users\ja\dev\hello-reason\lib
]] Making a new jbuilder package at C:\Users\ja\dev\hello-reason\lib
=== Project root: C:\Users\ja\dev\hello-reason
Detected `esy` dependency manager for local use
Get ocaml stdlib dirs
Sending response {"id": 1, "jsonrpc": "2.0", "error": {"code": -32603, "message": "Invalid response for esy -q sh -c 'echo $OCAMLLIB'\n\n$OCAMLLIB': -c: line 0: unexpected EOF while looking for matching `''\n$OCAMLLIB': -c: line 1: syntax error: unexpected end of file"}}
Read message 
{"jsonrpc":"2.0","id":2,"method":"textDocument/codeAction","params":{"textDocument":{"uri":"file:///c%3A/Users/ja/dev/hello-reason/lib/Util.re"},"range":{"start":{"line":4,"character":9},"end":{"line":4,"character":9}},"context":{"diagnostics":[]}}}
[server] Got a method textDocument/codeAction
[server] processing took 0.ms
Found a `dune` file at C:\Users\ja\dev\hello-reason\lib
]] Making a new jbuilder package at C:\Users\ja\dev\hello-reason\lib
=== Project root: C:\Users\ja\dev\hello-reason
Detected `esy` dependency manager for local use
Get ocaml stdlib dirs
Sending response {"id": 2, "jsonrpc": "2.0", "error": {"code": -32603, "message": "Invalid response for esy -q sh -c 'echo $OCAMLLIB'\n\n$OCAMLLIB': -c: line 0: unexpected EOF while looking for matching `''\n$OCAMLLIB': -c: line 1: syntax error: unexpected end of file"}}
Read message 
{"jsonrpc":"2.0","id":3,"method":"textDocument/codeLens","params":{"textDocument":{"uri":"file:///c%3A/Users/ja/dev/hello-reason/lib/Util.re"}}}
[server] Got a method textDocument/codeLens
[server] processing took 0.ms
Found a `dune` file at C:\Users\ja\dev\hello-reason\lib
]] Making a new jbuilder package at C:\Users\ja\dev\hello-reason\lib
=== Project root: C:\Users\ja\dev\hello-reason
Detected `esy` dependency manager for local use
Get ocaml stdlib dirs
Sending response {"id": 3, "jsonrpc": "2.0", "result": [{"range": {"start": {"line": 0, "character": 0}, "end": {"line": 0, "character": 0}}, "command": {"title": "Unable to load compilation data: Invalid response for esy -q sh -c 'echo $OCAMLLIB'\n\n$OCAMLLIB': -c: line 0: unexpected EOF while looking for matching `''\n$OCAMLLIB': -c: line 1: syntax error: unexpected end of file", "command": ""}}]}
Read message 
{"jsonrpc":"2.0","method":"$/cancelRequest","params":{"id":3}}
Read message 
{"jsonrpc":"2.0","id":4,"method":"textDocument/codeLens","params":{"textDocument":{"uri":"file:///c%3A/Users/ja/dev/hello-reason/lib/Util.re"}}}
[server] Got a method textDocument/codeLens
[server] processing took 0.ms
Found a `dune` file at C:\Users\ja\dev\hello-reason\lib
]] Making a new jbuilder package at C:\Users\ja\dev\hello-reason\lib
=== Project root: C:\Users\ja\dev\hello-reason
Detected `esy` dependency manager for local use
Get ocaml stdlib dirs
Sending response {"id": 4, "jsonrpc": "2.0", "result": [{"range": {"start": {"line": 0, "character": 0}, "end": {"line": 0, "character": 0}}, "command": {"title": "Unable to load compilation data: Invalid response for esy -q sh -c 'echo $OCAMLLIB'\n\n$OCAMLLIB': -c: line 0: unexpected EOF while looking for matching `''\n$OCAMLLIB': -c: line 1: syntax error: unexpected end of file", "command": ""}}]}
Read message 
{"jsonrpc":"2.0","id":5,"method":"textDocument/codeLens","params":{"textDocument":{"uri":"file:///c%3A/Users/ja/dev/hello-reason/lib/Util.re"}}}
[server] Got a method textDocument/codeLens
[server] processing took 0.ms
Found a `dune` file at C:\Users\ja\dev\hello-reason\lib
]] Making a new jbuilder package at C:\Users\ja\dev\hello-reason\lib
=== Project root: C:\Users\ja\dev\hello-reason
Detected `esy` dependency manager for local use
Get ocaml stdlib dirs
Sending response {"id": 5, "jsonrpc": "2.0", "result": [{"range": {"start": {"line": 0, "character": 0}, "end": {"line": 0, "character": 0}}, "command": {"title": "Unable to load compilation data: Invalid response for esy -q sh -c 'echo $OCAMLLIB'\n\n$OCAMLLIB': -c: line 0: unexpected EOF while looking for matching `''\n$OCAMLLIB': -c: line 1: syntax error: unexpected end of file", "command": ""}}]}
Read message 
{"jsonrpc":"2.0","id":6,"method":"textDocument/hover","params":{"textDocument":{"uri":"file:///c%3A/Users/ja/dev/hello-reason/lib/Util.re"},"position":{"line":3,"character":37}}}
[server] Got a method textDocument/hover
[server] processing took 0.ms
Found a `dune` file at C:\Users\ja\dev\hello-reason\lib
]] Making a new jbuilder package at C:\Users\ja\dev\hello-reason\lib
=== Project root: C:\Users\ja\dev\hello-reason
Detected `esy` dependency manager for local use
Get ocaml stdlib dirs
Sending response {"id": 6, "jsonrpc": "2.0", "error": {"code": -32603, "message": "Invalid response for esy -q sh -c 'echo $OCAMLLIB'\n\n$OCAMLLIB': -c: line 0: unexpected EOF while looking for matching `''\n$OCAMLLIB': -c: line 1: syntax error: unexpected end of file"}}
Read message 
{"jsonrpc":"2.0","method":"$/cancelRequest","params":{"id":6}}
Read message 
{"jsonrpc":"2.0","id":7,"method":"textDocument/hover","params":{"textDocument":{"uri":"file:///c%3A/Users/ja/dev/hello-reason/lib/Util.re"},"position":{"line":3,"character":38}}}
[server] Got a method textDocument/hover
[server] processing took 0.ms
Found a `dune` file at C:\Users\ja\dev\hello-reason\lib
]] Making a new jbuilder package at C:\Users\ja\dev\hello-reason\lib
=== Project root: C:\Users\ja\dev\hello-reason
Detected `esy` dependency manager for local use
Get ocaml stdlib dirs
Sending response {"id": 7, "jsonrpc": "2.0", "error": {"code": -32603, "message": "Invalid response for esy -q sh -c 'echo $OCAMLLIB'\n\n$OCAMLLIB': -c: line 0: unexpected EOF while looking for matching `''\n$OCAMLLIB': -c: line 1: syntax error: unexpected end of file"}}
Read message 
{"jsonrpc":"2.0","method":"$/cancelRequest","params":{"id":7}}

---

When I try to manually run esy -q sh -c 'echo $OCAMLLIB' in

1. powershell without elevation:

PS C:\Users\ja\dev\hello-reason> esy -q sh -c 'echo $OCAMLLIB'
ERROR: Unable to create symlinks. Missing SeCreateSymbolicLinkPrivilege.

Esy must be ran as an administrator on Windows, because it uses symbolic links.
Open an elevated command shell by right-clicking and selecting 'Run as administrator', and try esy again.

For more info, see https://github.com/esy/esy/issues/389

2. powershell as admin:

PS C:\Users\ja\dev\hello-reason> esy -q sh -c 'echo $OCAMLLIB'
C:/Users/ja/.esy/3_/i/ocaml-4.6.10-7ba95816/lib/ocaml

3. bash (from git for windows) (with and without elevation):

$ esy -q sh -c 'echo $OCAMLLIB'
/c/Users/ja/AppData/Roaming/npm/esy: line 1: /node_modules/esy/_build/default/bin/esy.exe: No such file or directory

[zetashift]

The OCAMLLIB issue seems to be resolved in this PR: #199 (comment)

[ducaale]

@zetashift did you build the extension from source to use it? if so how did you sideload it in vscode? the last release has still the error you mentioned.

[zetashift]

@zetashift did you build the extension from source to use it? if so how did you sideload it in vscode? the last release has still the error you mentioned.

I solved the OCAMLLIB parse error by declaring an environment variable, but I ran into a different error after that: #345
I'm also currently not on Windows anymore, your best bet would be to ask in reasonml's discord. Seeing how there is a PR open for 4.09 support too, I think it would be nice if a new release could be made!

[tensor-programming]

Had this problem myself. Noticed that If I called the command directly and replaced the single quotes with double quotes it gave me the directory.

Perhaps it could be fixed by changing line 280 in src/analyze/BuildSystem.re to "esy -q sh -- -c \"echo $OCAMLLIB\"" : "esy -q sh -c \"echo $OCAMLLIB\""; I am going to give it a try myself to see if that corrects the problem; will report back when I am finished.

Edit: After changing the file and building the language server it seems that the problem is gone. I am getting all of the features I would expect to get out of this plugin now without errors (seemingly).