same for windows. It seems like it doesn't get installed automatically. When downloading the cli manually and placing it in the intended folder, everything works though.

Confirmed downloading the latest release from https://arduino.github.io/arduino-cli/0.35/installation/, extracting the executable, creating the requisite folder structure in the extensions, moving / renaming the executable to what the extension is expecting (arduino-cli.app), then chmod +xing the executable seems to work.

Please let me know if this issue persists in release 0.7.1

Please let me know if this issue persists in release 0.7.1

The issue does persist yes, there is a darwin-arm64 but no linux-x64 folder as expected in the error message. Making the directory and downloading arduino cli and setting as executable manually does not work. Same error is provided

this works for me

Confirmed downloading the latest release from https://arduino.github.io/arduino-cli/0.35/installation/, extracting the executable, creating the requisite folder structure in the extensions, moving / renaming the executable to what the extension is expecting (arduino-cli.app), then chmod +xing the executable seems to work.

btw latest version is 1.0.4

Does this also happens if you install the extension from VSIX file (available on the release page)?
The issue seems to happen only when installing from market place

@lersi Sorry I can't help confirm that, I've only ever installed extensions through the marketplace-- I don't know how from the command line.

From farther digging, the extension files in the market place are messed up, and the serve the wrong VSIX file for the architecture.
I need to make sure if I did something wrong or is there a problem with their publish tool

Their tool is so messed up, I will now run through versions until I find the correct way of publishing

Please let me know if this issue persists in version "0.7.2" (dummy version)

Appears to be working fine (linux).

So the problem was indeed with vsce tool, closing this issue as solve