#6225: Undefined %epoch problem in Rawhide broken deps report

[Fedora Release Engineering]

#6225: Undefined %epoch problem in Rawhide broken deps report
-----------------------------+------------------------
 Reporter:  mschwendt        |       Owner:  rel-eng@…
     Type:  task             |      Status:  new
Milestone:  Fedora 22 Final  |   Component:  mash
 Keywords:                   |  Blocked By:
 Blocking:                   |
-----------------------------+------------------------
 This has been sent to devel@ and test@ list but hasn't seen a reply from
 anyone with insight yet:

   https://lists.fedoraproject.org/pipermail/devel/2015-July/212963.html

 For over a month, a broken "blktap" package had been in Rawhide without
 being discovered by the broken deps report. Meanwhile, a fixed blktap
 package has been released into Rawhide, but the broken deps report likely
 still suffers from the problem as described below.

 What creates the Rawhide broken deps report nowadays?
 Is it able to discover undefined %{epoch} values in dependencies?

 {{{
 > Broken deps for x86_64

 Surprisingly, the report is incomplete and doesn't find some unresolvable
 dependencies. DNF doesn't either.

 An undefined %{epoch} in a dependency is not found. This has been reported
 to blktap: https://bugzilla.redhat.com/1248912

 Note how DNF tells "Dependencies resolved", but later fails during the
 transaction check. How could it resolve the unexpanded "%{epoch}" earlier?

 $ rpm -qpR blktap-devel-3.0.0-3.fc23.git0.9.2.x86_64.rpm |grep ep
 blktap(x86-64) = %{epoch}:3.0.0-3.fc23.git0.9.2

 $ dnf install blktap-devel
 Waiting for process with pid 2683 to finish.
 Fedora - Rawhide - Developmental packages for t 1.3 MB/s |  43 MB
 00:32
 Last metadata expiration check performed 0:00:17 ago on Fri Jul 31
 09:33:49 2015.
 Dependencies resolved.
 ================================================================================
  Package           Arch        Version                       Repository
 Size
 ================================================================================
 Installing:
  blktap            x86_64      3.0.0-3.fc23.git0.9.2         rawhide
 245 k
  blktap-devel      x86_64      3.0.0-3.fc23.git0.9.2         rawhide
 21 k

 Transaction Summary
 ================================================================================
 Install  2 Packages

 Total download size: 266 k
 Installed size: 793 k
 Is this ok [y/N]: y
 Downloading Packages:
 (1/2): blktap-devel-3.0.0-3.fc23.git0.9.2.x86_6 213 kB/s |  21 kB
 00:00
 (2/2): blktap-3.0.0-3.fc23.git0.9.2.x86_64.rpm  956 kB/s | 245 kB
 00:00
 --------------------------------------------------------------------------------
 Total                                           202 kB/s | 266 kB
 00:01
 Running transaction check
 Error: transaction check vs depsolve:
 blktap(x86-64) = %{epoch}:3.0.0-3.fc23.git0.9.2 is needed by blktap-
 devel-3.0.0-3.fc23.git0.9.2.x86_64
 To diagnose the problem, try running: 'rpm -Va --nofiles --nodigest'.
 You probably have corrupted RPMDB, running 'rpm --rebuilddb' might fix the
 issue.
 }}}

-- 
Ticket URL: <https://fedorahosted.org/rel-eng/ticket/6225>
Fedora Release Engineering <http://fedorahosted.org/rel-eng>
Release Engineering for the Fedora Project