Hello Andreas,This my first attempt to write small patches for udd[0](for the changes we were discussing) one for blends_metadata_gatherer.py and one for setup.sql (I have attached the two corresponding files).I added an extra table blends_dependencies_alternatives(i did not think of any other table name or fields name):-------------------------------------------------------------blend | task | alternatives-------------------------------------------------------------blendname | taskname | package1 | package2 | package3 ..I added in blends_metadata_gatherer.py to also include the avoid packages(in order to keep a list of the excluded packages per task as current blend-gen-control, if you think we do not this you can remove it). Also I have to note that I added into "my_config" of blends_metadata_gatherer.py a 'table-alternatives' entry which should provide the name "blends_dependencies_alternatives" of the new table when it's needed in the code(I imitated the way you use the other configs you already have).I do not know if these were the changes you had in mind when thinking about adding the extra table to handle to packages' alternatives. In cas e you don't agree with something let me know and I will change it(or rewrite the code if I am in a completely wrong direction).Kind regardsEmmanouil[0] git://anonscm.debian.org/collab-qa/udd.git