On Wednesday 11 October 2006 08:47, Bo Ørsted Andresen wrote: [SNIP] > Yes, that's reverse dependencies. > > The portage way is to see if it shows up on emerge --depclean --pretend. If > it doesn't then you have something in your world file that depends on it. > If the package itself is in your world file then the best solution is to > simply remove it manually by editing /var/lib/portage/world and then run > --depclean to see if anything keeps it...
So played a bit.. ;) I think the easiest (in terms of performance) way to get
a complete list of all installed, deep reverse depencies of a package is to
install sys-apps/pkgcore and use this bash script (at least it seems to work
for me):
---------------------------------------------------------------------
!/bin/bash
ATOM=$1
REV=$(pquery --vdb --revdep ${ATOM})
while [[ -n ${REV} ]];
do
REV_OLD="$REV"
REV=$(echo "${REV_OLD}" | \
while read pkg_rev;
do
pkg=$(echo "$pkg_rev" | sed -r 's/-[^-]+(-r[0-9]+)*$//');
if [[ ! $ALL_REV =~ "$pkg" ]];
then
pquery --vdb --revdep "$pkg";
fi ;
done)
ALL_REV="$ALL_REV
$REV_OLD"
done
echo "$ALL_REV" | sort -u
---------------------------------------------------------------------
E.g. to find installed, deep reverse dependencies of ssmtp (which I happen to
have installed):
# ./above_bash_script mail-mta/ssmtp
Note that you need a fully qualified atom (such as mail-mta/ssmtp) as
argument. (A couple of places in the script altering quotation or indentation
will influence the output). Note also that it may take a while to run...
--
Bo Andresen
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