If I build core-image-minimal with BB_GENERATE_MIRROR_TARBALLS := "1"... 
in my local.conf....

And then I start a second build, with:

SOURCE_MIRROR_URL := "file://.../firstbuild/.../downloads"
INHERIT += "own-mirrors"
BB_FETCH_PREMIRRORONLY := "1"
BB_NO_NETWORK := "1"

It fails almost immediately for failure to fetch quilt source, (which 
/does/ exist in the previous build's .../downloads). Apparently the 
"build first" build of pseudo doesn't pick up these settings?

Is this intentional?

--rich