Lets talk about the long deploying time

[cnc4]

I am using java to deploy code to the robot and it's taking about half a minute to deploy in the best case scenario. Before 2017 season it was 15 - 20

now it's not a reasonable run time, I mean I didn't check the build process but running a fresh code which takes about 40 sec can surely be reduced.
Does it copy all the 3rd party lib into the robot every time?

I am intrested in hearing your thoughts guys and build time on your programming language.