The initial version of the filtered the latest builds at the start. That
doesn't matter in many cases:
* When there are no lookaside repos, there is generally a single version
of each package.
* When lookaside repos do not overlap with compose repos, or contain
only older versions.
It is however a problem when the lookaside repos contain higher version
of a package than what is in a compose repo, and some package explicitly
requires the older version.
Consider this scenario:
* lookaside contains bar-1.1
* compose repo contains bar-1.0 and foo-1.0
* foo-1.0 `Requires: bar < 1.1`
The original code would filter out the bar-1.0 package, and then fail on
unresolved dependencies.
This patch moves the computation of latest packages much later, to part
of code where all options to satisfy a dependency are selected and the
best match is chosen. At that point if there are multiple versions
available, we do want the latest one.
JIRA: SPMM-13483
Signed-off-by: Lubomír Sedlář <lsedlar@redhat.com>
bcc440491e