Advice: The build script can be optimized

[dsk502]

Every time I build the helloSystem ISO, the packages and files used in building will be downloaded or installed again. It's a waste of time. I think the shell script can be modified to detect whether the packages are installed, and if their correct version are installed, skip the reinstallation.

[probonopd]

At least in theory, the downloaded packages should be cached and re-used. Doesn't it work for you? Can you think of ways to improve the mechanism without introducing more complexity?

[dsk502]

In FreeBSD, the downloaded packages are cached, so in this script (build.sh), it will not download again. But the problem is, it will install the packages again.

[probonopd]

We are building a new filesystem image from scratch each time - how could we do this without installing what shall go into it?