Doesn't find the Platform IO Extension in VS Code (Manjaro Linux)

I am using VS Code 1.51.1-1 from the official Manjaro Linux repository. Unfortunately I can’t find platform IO by searching in the extensions. What am I doing wrong?

VS Code Version: 1.51.1
Commit: e5a624b788d92b8d34d1392e4c4d9789406efe8f
Date: 2020-11-12T10:54:25.653Z
Electron: 9.3.5
Chrome: 83.0.4103.122
Node.js: 12.14.1
OS: Linux x64 5.9.11-3-MANJARO
Python: 3.8.6

Does it install OSS VSCode or normal Microsoft VSCode from the AUR? You need Microsoft’s version with the Microsoft marketplace. Refer PlatformIO IDE not in marketplace.

Thanks, that was the solution!

Last Question: can i use the platform io extension with the oss version of code?

To the best of my knowledge, PlatformIO relies on the Microsoft C/C++ extension for its IntelliSense and other plugins are incompatible. So if that plugin is not available in your installation, your experience my be severaly degraded. Whether it relies on other APIs that are only available in the Microsoft version, I don’t know. It is possible to download the .vsix extension file directly from the marketplace website (“Download Extension”), but whether that works is as I said questionable.

Try installing code-marketplace from the AUR. This patches the oss version of code with the correct urls to access the marketplace