- force'ing to a non-existent alias should fail.
- - packages can disappear
- - rm -rf debian/ from tarballs?
- - geneland dependency failure in apt *not* cran2deb
- - fine grained bad license breakdown
+ - deal with growing database: prune things.
+ - split up dependency structure to support building under different distributions
+ - put build log into another table
+ - build all archs of same package in one go
+