Library installation from custom path issue


I have some users that cannot build Openmqttgateway due to an issue during the libraries installation.
If we specify the library like this into platformio.ini :
arduinolog = thijse/ArduinoLog

It works

But a custom path doesn’t work :
arduinolog =

The thread is below : Cannot compile for pilight - #7 by 1technophile - Radio frequencies gateways 315mhz, 433mhz, 868mhz - OpenMQTTGateway

Note that I don’t reproduce the issue in my environment.
We are all with :
Platformio: Core 5.1.0 Home 3.3.4

Do you have some tracks that could help us ?

From the linked thread

Library Manager: Installing git+
FileNotFoundError: [WinError 2] The system cannot find the file specified:

The affected user doesn’t seem to have Git installed. Also explains why it works over the library-registry form, since it does not depend on git.

This was it. Thanks !