From: Jim Weirich <jim@...>
Date: 2004-07-01T12:37:25+09:00
Subject: Re: rubygems install error

Ara.T.Howard wrote:
> 
> i get this running install.rb
> 
> ERROR: Failed to migrate the old gems located in...
>   /dmsp/reference/ruby-1.8.1/lib/ruby/gems/1.8
>   ...to the /dmsp/reference/ruby-1.8.1/lib/ruby/gems/1.8/gems directory
>   You should move them manually, or your gems DB will be an invalid state

Hi Ara!

This is what is happening:  Way back when rubygems started, we dumped 
information directly into the .../ruby/gems/1.8 directory.  As the 
project matured and more information was added to that directory, it 
because obvious that the installed gem directories really ought to be 
installed in subdirectory (namely .../ruby/gems/1.8/gems).  At that time 
the installer was written to automatically migrate old gem repositories 
to the new format.

Unfortunately in reviewing the code for the installer, I see the 
criteria used to move the files checks for a dash/digit in the file 
name.  Since your directory path includes "ruby-1" in it, the criteria 
is falsely triggered and an incorrect file (I think it is the cache 
directory from your backtrace) is attempted to be moved.

The install continues normally after that point, so unless you _really_ 
do have old gems in the .../ruby/gems/1.8 directory, your install should 
be fine.

I've added the install bug to my bug list.

Thanks for the feedback.

-- 
-- Jim Weirich    jim@weirichhouse.org     http://onestepback.org
-----------------------------------------------------------------
"Beware of bugs in the above code; I have only proved it correct,
not tried it." -- Donald Knuth (in a memo to Peter van Emde Boas)