No kdl-lsp.exe exists

[chosig]

KDL Version 2.1.3

Just installed it, get no connection to the lsp server error, when I check c:\Users\Datorn\.vscode\extensions\kdl-org.kdl-2.1.3\dist\node_modules\.bin_real it is empty.

[Error - 2:10:10 PM] KDL Language Server client: couldn't create connection to server.
Launching server using command c:\Users\Datorn\.vscode\extensions\kdl-org.kdl-2.1.3\dist\node_modules\.bin_real\kdl-lsp.exe failed. Error: spawn c:\Users\Datorn\.vscode\extensions\kdl-org.kdl-2.1.3\dist\node_modules\.bin_real\kdl-lsp.exe ENOENT

[temportalflux]

This is still an issue, kdl-lsp.exe does not exist with the vscode install v2.1.3

[Error - 8:40:53 AM] KDL Language Server client: couldn't create connection to server.
Launching server using command c:\Users\<user>\.vscode\extensions\kdl-org.kdl-2.1.3\dist\node_modules\.bin_real\kdl-lsp.exe failed. Error: spawn c:\Users\<user>\.vscode\extensions\kdl-org.kdl-2.1.3\dist\node_modules\.bin_real\kdl-lsp.exe ENOENT

This error also happens in v2.1.2. It does not happen in v2.1.1, but the 2.1.1 extension install folder also doesnt have a dist directory for the node_modules at all.

[el2iot2]

A few more details from another user encountering this issue:

Here are the references to kdl-lsp in the github org.

This led me to the node package named kdl-lsp.

And when I went to install that package I got:

npm error code 1
npm error path C:\Users\redactio\AppData\Roaming\npm\node_modules\kdl-lsp
npm error command failed
npm error command C:\WINDOWS\system32\cmd.exe /d /s /c node ./install.js
npm error Downloading release from https://github.com/kdl-org/kdl-rs/releases/download/v6.3.3/kdl-lsp-x86_64-pc-windows-msvc.zip
npm error Error fetching release: spawnSync unzip ENOENT
npm error A complete log of this run can be found in: C:\Users\redactio\AppData\Local\npm-cache\_logs\2025-07-25T14_28_09_349Z-debug-0.log

The mentioned logs provide only slightly more context.

...
100 info run kdl-lsp@6.3.3 postinstall { code: 1, signal: null }
101 verbose stack Error: command failed
101 verbose stack     at promiseSpawn (C:\Users\redactio\AppData\Roaming\npm\node_modules\npm\node_modules\@npmcli\promise-spawn\lib\index.js:22:22)
101 verbose stack     at spawnWithShell (C:\Users\redactio\AppData\Roaming\npm\node_modules\npm\node_modules\@npmcli\promise-spawn\lib\index.js:124:10)
101 verbose stack     at promiseSpawn (C:\Users\redactio\AppData\Roaming\npm\node_modules\npm\node_modules\@npmcli\promise-spawn\lib\index.js:12:12)
101 verbose stack     at runScriptPkg (C:\Users\redactio\AppData\Roaming\npm\node_modules\npm\node_modules\@npmcli\run-script\lib\run-script-pkg.js:79:13)
101 verbose stack     at runScript (C:\Users\redactio\AppData\Roaming\npm\node_modules\npm\node_modules\@npmcli\run-script\lib\run-script.js:9:12)
101 verbose stack     at C:\Users\redactio\AppData\Roaming\npm\node_modules\npm\node_modules\@npmcli\arborist\lib\arborist\rebuild.js:331:17
101 verbose stack     at run (C:\Users\redactio\AppData\Roaming\npm\node_modules\npm\node_modules\promise-call-limit\dist\commonjs\index.js:67:22)
101 verbose stack     at C:\Users\redactio\AppData\Roaming\npm\node_modules\npm\node_modules\promise-call-limit\dist\commonjs\index.js:84:9
101 verbose stack     at new Promise (<anonymous>)
101 verbose stack     at callLimit (C:\Users\redactio\AppData\Roaming\npm\node_modules\npm\node_modules\promise-call-limit\dist\commonjs\index.js:35:69)
102 verbose pkgid kdl-lsp@6.3.3
103 error code 1
104 error path C:\Users\redactio\AppData\Roaming\npm\node_modules\kdl-lsp
105 error command failed
106 error command C:\WINDOWS\system32\cmd.exe /d /s /c node ./install.js
107 error Downloading release from https://github.com/kdl-org/kdl-rs/releases/download/v6.3.3/kdl-lsp-x86_64-pc-windows-msvc.zip
107 error Error fetching release: spawnSync unzip ENOENT
...

But this suggested to me that the release download link was bad. However, attempting to download it:

https://github.com/kdl-org/kdl-rs/releases/download/v6.3.3/kdl-lsp-x86_64-pc-windows-msvc.zip

worked fine:

So when i pasted this binary into the original location the server was reference to run from:

c:\Users\redactio\.vscode\extensions\kdl-org.kdl-2.1.3\dist\node_modules\.bin_real\kdl-lsp.exe

And restarted the extension, the server ran and I was seeing syntax highlighting.

[deniz-blue]

I think this might be a Windows specific issue: binary-install.js (npm:kdl-lsp) does spawnSync("tar",...) and spawnSync("unzip",...)

[englercj]

Any update on this issue? Seems like it is still active. I'm wanting to use KDL more broadly, but this is issue if fairly blocking for me.

[deniz-blue]

a potential workaround i feel like that might work is if you get the tar and unzip commands (gnu utils i think) on your PATH