`Error: No unique release file found!` when activating extension on Nix host

[StarLederer]

Upon opening any XML file for the first time after launching VSCode the following shows up in the extension host output panel and the extension does not start

2024-04-23 12:00:00.000 [error] Error: No unique release file found!
    at /home/team-output/.vscode-server/extensions/redhat.vscode-xml-0.26.1-linux-x64/dist/extension.js:2:178677
    at callback (/home/team-output/.open-remote-ssh/1a5daa3a0231a0fbba4f14db7ec463cf99d7768e/node_modules/graceful-fs/polyfills.js:306:20)
    at FSReqCallback.oncomplete (node:fs:202:21)

I am runinng VSCode in a minimalist docker container with Nix and I did not expect the server to be able to install and run by itself so I configured the binary manually:

{
    "xml.server.binary.path": "/nix/store/19mj4fqvwvd941awdrm3rwn43rk8z414-lemminx-0.27.0/bin/lemminx",
    "xml.server.preferBinary": true
}

I hoped that would remove the need to read information about my system but unfortunately the error persisted.

[fbricon]

this is thrown by getos, failing to find a release file in the distro. vscode-xml doesn't use getos directly, but through its telemetry module.

Can you try setting "redhat.telemetry.enabled":"false" in your vscode settings, see if it helps?

[StarLederer]

Thank you, creating /etc/NIXOS (even though I am not really on NixOS) worked and the extension is showing signs of working correctly!

Regardless, I wonder what did the extension need to getos for? Telemetry is off by default and i assume it would only need it to download the correct language server binary. I don't mind having the release file in the container but I wonder if being able to bypass it could improve the experience for future users

[fbricon]

I don't know why getos is called if telemetry is disabled. It's possible that code is instantiated even if telemetry is disabled. We need to investigate.