[oe] How to rebuild images with updated PREFERRED_PROVIDER_xxx in machine conf?

[Jiason Li]

Hi,

resulted two things:

1. bitbake -c package_update_index opie-image
ERROR: Task do_package_update_index does not exist for target opie-image

2. I just found that:
although "bitbake some-pkg" will produce some-pkg-mine.ipk correctly,
some-pkg was still in some-image instead of some-pkg-mine after
"bitbake some-image". :-(

strangest thing is, if "some-pkg" was "virtual/kernel", then things
all worked correctly...

 Any info are very appreciated. :-/

Thank You!
jiason
20100324