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Date: Fri, 4 Jul 2014 20:20:53 +0300
From: Michael Shigorin <mike@osdn.org.ua>
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On Fri, Jul 04, 2014 at 09:09:59PM +0400, Dmitry V. Levin wrote:
> Это еще до вас, насколько я понимаю, неправильно написаны скрипты:
> сперва %post делает ln, а потом %preun делает rm.

См. самый хвост /usr/share/doc/rpm-4.0.4/manual/triggers:

For reference, here's the order in which scripts are executed on a single
package upgrade:

  new-%pre      for new version of package being installed
  ...           (all new files are installed)
  new-%post     for new version of package being installed

  any-%triggerin (%triggerin from other packages set off by new install)
  new-%triggerin
  old-%triggerun
  any-%triggerun (%triggerun from other packages set off by old uninstall)

  old-%preun    for old version of package being removed
  ...           (all old files are removed)
  old-%postun   for old version of package being removed

  old-%triggerpostun
  any-%triggerpostun (%triggerpostun from other packages set off by old un
                install)

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