From: gabriele renzi <surrender_it@...>
Date: 2006-02-02T06:57:24+09:00
Subject: Re: One-Click Ruby Installer 184-16 preview2 is available!

Jim Weirich ha scritto:
> Joel VanderWerf wrote:
> 
>>Is there some way to "lock" older gems that are needed by applications?
>>Or would FreeRIDE have to be a gem itself and have an explicit 
>>dependency?
> 
> 
> I assume you mean lock down so that the gem cleanup command won't remove 
> particular versions.
> 
> There is no direct way to do this in RubyGems.  However, you could 
> create a gem of your own that installed no software but did depened on 
> the versions of the software you needed.  It is pretty trivial to create 
> gems, so this is not hard.  As long as your "lock down" gem is 
> installed, the cleanup command won't remove the referenced gem versions. 
> (caveat: technique untried, but can't think of a reason it wouldn't 
> work).

would it be reasonable to add a switch (I'm thinking of "gem lock 
foo-x.y.z") to gem to do this automagically?
It could update a rubygems-locked gem each time "lock" is called, 
providing users a nice interface to a useful feature.