[MacPorts] #38407: port -v rev-upgrade reports error for gimp.app

[MacPorts]

#38407: port -v rev-upgrade reports error for gimp.app
-------------------------+--------------------
  Reporter:  istlota@…   |      Owner:  cal@…
      Type:  defect      |     Status:  closed
  Priority:  Normal      |  Milestone:
 Component:  base        |    Version:  2.1.3
Resolution:  worksforme  |   Keywords:
      Port:              |
-------------------------+--------------------
Changes (by cal@…):

 * status:  new => closed
 * resolution:   => worksforme
 * port:  gimp =>


Comment:

 This is weird. Rev-upgrade gets its list of installed binaries from the
 registry. An entry for
 `/Applications/MacPorts/GIMP.app/Contents/MacOS/GIMP` can only find its
 way into the registry, if it was ever installed. So lets assume you had
 GIMP.app installed at some point and then deactivated or removed it.

 Since rev-upgrade will only query active binaries from the registry
 database, it could only have seen this binary path, if the deactivation
 process was not run to completion and left the database in an inconsistent
 state (which transactions should have prevented, though).

 You say `port -f clean --all all` fixed the problem, but this cannot be
 the command that caused the problem to no longer appear, because clean
 doesn't even touch the registry. Whatever it was, I have no idea how that
 could have happened. I'll have a look at the deactivation code, but I
 doubt we have any race conditions or wrong transactions in there. I guess
 I'll just close this as worksforme…

-- 
Ticket URL: <https://trac.macports.org/ticket/38407#comment:2>
MacPorts <http://www.macports.org/>
Ports system for OS X