Setup-your-computer.md

@@ -26,6 +26,10 @@ Install python needed by the toolchains installation scripts:
 
 `sudo apt install python`
 
+If it is not available install the following package:
+
+`sudo apt install python-is-python3`
+
 Install g++ to compile simulator and ground station: (flair does not use the toolchain for these programs to avoid problems with opengl):
 
 `sudo apt install g++`