But this does not explain why 1 degree in SWS is shown as 4 minutes in Indi.
In OnStep the parameter is divided by 4 (why and whan this changed ???) I will investigate.
Hm... It looks like strange behavior or bug of apt command. It doesn't install libev-dev if to write many packages after `sudo apt install` (as in your build script).
Separate `sudo apt install libev-dev` solved the problem