[Rubygems-developers] [PATCH] gem unpack fails in gem isn't in the default repository

Laurent Sansonetti laurent.sansonetti at gmail.com
Tue Jan 15 10:48:52 EST 2008


Currently with trunk, gem unpack fails if you pass it a gem that isn't
in the default gems repository, but another repository.

It is the case in Mac OS X 10.5, where there are 2 repositories, but
all pre-installed gems being in the non-default one.

$ ruby -r rubygems -e "p Gem.dir, Gem.path"

$ gem unpack termios
ERROR:  While executing gem ... (Gem::Exception)
    Cannot load gem at
[/Library/Ruby/Gems/1.8/cache/termios-0.9.4.gem] in /Volumes/Data

The following patch fixes the problem.

$ gem unpack termios
Unpacked gem: '/Volumes/Data/termios-0.9.4'


Index: lib/rubygems/commands/unpack_command.rb
--- lib/rubygems/commands/unpack_command.rb	(revision 1594)
+++ lib/rubygems/commands/unpack_command.rb	(working copy)
@@ -73,7 +73,7 @@
     # Furthermore, the name match must be exact (ignoring case).
     if gemname =~ /^#{selected.name}$/i
       filename = selected.full_name + '.gem'
-      return File.join(Gem.dir, 'cache', filename)
+      return Gem.path.map { |d| File.join(d, 'cache', filename)
}.find { |p| File.exist?(p) }
       return nil

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