Description of problem:

gridengine-execd and gridengine-qmaster has the following requires:

Requires(postun): %{name} = %{version}-%{release}

However, with the following command:

yum -y remove gridengine\*

yum will allow itself to remove gridengine before gridengine-execd and
gridengine-qmaster.  This causes problem because the initscripts in the first
two packages depend on files in the base package:

Running Transaction
  Erasing   : gridengine                   ######################### [1/5]
/etc/init.d/sgeexecd: line 85: /usr/share/gridengine/util/arch: No such file or
directory
/etc/init.d/sgeexecd: line 86: /usr/share/gridengine/util/arch: No such file or
directory
/etc/init.d/sgeexecd: line 91: =$:/usr/share/gridengine/lib/: No such file or
directory
export LANG="en_US.UTF-8"
export OLDPWD
export PATH="/bin:/usr/bin:/sbin:/usr/sbin"
export PWD="/"
export SGE_CELL="default"
export SGE_ROOT="/usr/share/gridengine"
export SHLVL="1"
export TERM="xterm"
/etc/init.d/sgeexecd: line 219: /usr/libexec/gridengine/utilbin/gethostname: No
such file or directory
/etc/init.d/sgeexecd: line 220: /usr/libexec/gridengine/utilbin/gethostname: No
such file or directory
/etc/init.d/sgeexecd: line 142: /usr/bin/qconf: No such file or directory
/etc/init.d/sgeexecd: line 144: /usr/bin/qconf: No such file or directory
   Shutting down Grid Engine execution daemon
ls: cannot access //active_jobs: No such file or directory
  Erasing   : gridengine-execd             ######################### [2/5]
  Erasing   : gridengine-devel             ######################### [3/5]
  Erasing   : gridengine-qmon              ######################### [4/5]
/etc/init.d/sgemaster: line 89: /usr/share/gridengine/util/arch: No such file or
directory
/etc/init.d/sgemaster: line 96: /usr/share/gridengine/util/arch: No such file or
directory
/etc/init.d/sgemaster: line 101: =$:/usr/share/gridengine/lib/: No such file or
directory
export LANG="en_US.UTF-8"
export OLDPWD
export PATH="/bin:/usr/bin:/sbin:/usr/sbin"
export PWD="/"
export SGE_CELL="default"
export SGE_ROOT="/usr/share/gridengine"
export SHLVL="1"
export TERM="xterm"
can't determine path to Grid Engine binaries
  Erasing   : gridengine-qmaster           ######################### [5/5]


Note that "yum remove gridengine" which is by far the most common way of
removing these packages works as expected.

Version-Release number of selected component (if applicable):
yum-3.2.8-2.fc8