I'm trying to learn how #rustlang works
But really the dependencies system is weird I believe I download & compiled some of these already in pervious project
now i've to to do it again . 
@manpacket @epage @mikkelens
Understood Thanks for nice reply
since my machine is low end with 4GB ram and 2 core cpu which case my system to freeze at linker time [ ld ]
for not enough memory
so I can't use rust with big project or game dev such as bevy atm.