In my quest to test a minimal sstate cache, I tried a simple experiment where only a few sstate components were available. Sadly, this failed pretty badly, showing that sstate still has some holes. Attached will be the script I ran which builds a complete setup and then uses a minimal subset of the sstate cache for a subsequent build which fails. Also attached will be the console log running this script.
Created attachment 262 [details] Script used to test sstate
Created attachment 263 [details] Build log showing sstate failure
After a bit of investigation RP and I have come up with a fix; I've posted it to the bitbake-devel list for review: http://lists.linuxtogo.org/pipermail/bitbake-devel/2011-November/001514.html
Fix merged to master in commit 97a40ff05ed7c374502759e0d462f5dc21f71f6d.