Date: Tue, 28 Nov 2000 14:38:05 -0500 (EST) From: Garrett Wollman <wollman@khavrinen.lcs.mit.edu> To: jpasski@kpmg.com Subject: Re: pkg_version Message-ID: <200011281938.OAA08244@khavrinen.lcs.mit.edu> In-Reply-To: <mit.lcs.mail.freebsd-stable/7799D023E51ED311BFB50008C75DD7B402881AD7@uschiexc05.kweb.us.kpmg.com>
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In article <mit.lcs.mail.freebsd-stable/7799D023E51ED311BFB50008C75DD7B402881AD7@uschiexc05.kweb.us.kpmg.com> you write:
>When trying to upgrade complex applications like XFree86 w/ Enlightenment &
>Gnome, is there a sequence that should be followed on what applications are
>updated first to last?
Here is a short shell script (can even be entered interactively if you
are using a Real Shell[tm]) which will tell you in which order the
stuff you currently needs to be built. Reverse the list to find the
order in which they should be removed.
------------------------------------
#!/bin/sh
cd /var/db/pkg
for a in *; do
if [ -r ${a}/+REQUIRED_BY ]; then
while read pkg; do
echo ${a} ${pkg}
done <${a}/+REQUIRED_BY
fi
done | tsort
------------------------------------
If you see the error `tsort: cycle in data', then something is
seriously broken. (It is conceivable that such cycles could be
formed.) Note that the topological sort is not a full sort, so not
all of the ordering is meaningful, and this doesn't take
build-dependencies into account -- only run dependencies. This
information could be extracted from the INDEX file by pkg_version.
-GAWollman
--
Garrett A. Wollman | O Siem / We are all family / O Siem / We're all the same
wollman@lcs.mit.edu | O Siem / The fires of freedom
Opinions not those of| Dance in the burning flame
MIT, LCS, CRS, or NSA| - Susan Aglukark and Chad Irschick
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