disables the repo if BUILD_MINIMAL=yes

Disabling adding this if minimal is called out would do . Other solutions seems more complex.

This came up by enabling lunar images for nightly, where at least minimal image is build …

It adds quite a lot:

Another alternative, if building MINIMAL then don’t try to add repos. It won’t make sense anyway…

The command line being built:

Meanwhile, Lunar only has software-properties-common (which provides add-apt-repository) only in config/cli/lunar/main/packages.additional but not regular packages.

In summary: this board requires a non-minimal build (makes sense, for a laptop), or we need to include this package especially.