[yocto] Understanding "Package groups"

[Stefan Hofmann]

Hi,

I made my first steps with yocto and everything worked fine so far. But 
now I am struggling with "package groups". What I basically want, is a 
image for a base system, which allows me to install additional packages 
over the air with opkg. In my imagination package groups are something 
like preselected packages, which need to be installed at once similar 
like it is handled in Debian for X11-support for example. Is this right 
? I have built core-image-base for testing purposes and tried to figure 
out the dependencies by using the Hob tool. It says that bash will be 
installed and the group "base/shell" is responsible for that. However it 
is not installed, only ash and I cannot find a package group 
"package-group-base-shell" in the receipes. It does however exist in the 
work directory. So now I am somewhat confused.

Regards,
Stefan

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