From: Alex Gutteridge <alexg@...>
Date: 2006-07-21T17:31:20+09:00
Subject: RubyGems post-install hook

Hi,

I'm trying to package a Ruby library using Gems but have run into the
problem of needing to execute some post-install commands a la setup.rb.
Searching the archives brought this up from Dec 2004:

http://makeashorterlink.com/?N1E21217D

Am I right in thinking that RubyGems doesn't support these kind of
post-install hooks? Are there any plans to in the future?

As a proof of concept I knocked together a hacked rubygems which uses
the SerializableProc class from Ruby Quiz 38
(http://www.rubyquiz.com/quiz38.html) to allow something like this to
work:

require 'rubygems'

spec = Gem::Specification.new do |s|
  s.name = "test"
  s.version = "0.2.1"
  s.summary = "A test"

  #....yadda...yadda....  

  #This proc gets stored in the gem and called after installation
  s.post_install_proc = 
    SerializableProc.new %q{ system("echo 'I ran'") }

end

It's buggy as hell, but with a bit of cleaning is essentially all I
would need for my purposes.

-- 
Alex Gutteridge <alexg@kuicr.kyoto-u.ac.jp>