Fix query in select-derivations-with-no-known-build

Rather than eliminating any derivation that has a known build, eliminate those
derivations, but also equivalent derivations as well.

For selecting the derivations in a revision, join on the equivalent
derivations, as all the equilalent derivations need checking as well, as it's
unknown which one Cuirass would have associated the build against.

Also, filter for x86_64-linux, to avoid checking for crossbuilt things. This
should be replaced by some way of describing what derivations a build server
has.

0 files changed, 0 insertions, 0 deletions