[gentoo-portage-dev] Running commands after a merge (via /etc/portage/package.hooks)

[Elfyn McBratney <beu@gnu.org>]

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Hello,

I'm about to start working on a new portage feature that allows you to run
commands (basically, bash syntax) before a merge and after a successful
merge.

(At work, we have a lot of virtual hosts with auto-generated vhosts.conf files
for apache, with configuration data stored in XML files and/or databases, and
having them updated automatically on apache upgrades would ease maintenance
burdens. :)

What I would like to do is add a new file to /etc/portage - package.hooks
(open to suggestions on better names ;), which would contain category/package
atoms and shell commands, ala:

  [atom] 'before' '(' shell code ')' or
  [atom] 'after' '(' shell code ')' or

e.g.

  net-www/apache after apache-update-vhosts
  net-www/apache after (foo && do-bar || die "do-bar failed")

Where atom's marked with before would run before the merge, and packages with
after (or none specified) would be run after the merge.

Before I start, does this feature sound useful for other gentoo'ers? :)  If
I've also left out something really important (happens ;), please ask. =)

Comments, flames, etc, welcome. :)

Elfyn

- --
Elfyn McBratney
beu on irc.freenode.net/savannah.[non]gnu.org

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