install rails3 --pre on snow leopard w ruby 1.8.7 -- memcache_client gem problems

rubyonrails-talk
1

Hello,

Following the indications listed here:

in other words: sudo gem install tzinfo builder memcache-client rack rack-test rack- mount erubis mail text-format thor bundler i18n sudo gem install rails --pre

The first line installed gems without complaint. When I tried the second (sudo gem install rails --pre), it complains: ERROR: Error installing rails:    activesupport requires memcache-client (~> 1.7.5, runtime)

However: gem list --local | grep memc memcache-client (1.8.0)

So I checked and, from irb: >> require 'memcache' [memcache-client] Could not load SystemTimer gem, falling back to Ruby's slower/unsafe timeout library: no such file to load -- system_timer

OK so I added that: sudo gem install system_timer

And now from irb it seems OK: >> require 'memcache' => true >> MemCache::VERSION => "1.8.0"

But install of rails --pre still gives no joy: sudo gem install rails --pre ERROR: Error installing rails:    activesupport requires memcache-client (~> 1.7.5, runtime)

Any ideas?

Thanks, Ben

2

Following the indications listed here:Ruby on Rails — Rails 3.0: Beta release

in other words: sudo gem install tzinfo buildermemcache-clientrack rack-test rack- mount erubis mail text-format thor bundler i18n sudo gem install rails --pre

The first line installed gems without complaint. When I tried the second (sudo gem install rails --pre), it complains: ERROR: Error installing rails: activesupport requiresmemcache-client(~> 1.7.5, runtime)

Are you using jruby by chance? Have a look at `gem env` If it shows "RUBYGEMS VERSION: 1.3.3" and a gem path involving Jruby you'll run into trouble.

I just dusted off my old ubuntu box and started installing rails 3 and ran into this. If it is Jruby, clean up your paths to use MRI or maybe setup RVM(Ruby Version Manager).

3

No this was regular (not j-) ruby, 1.8.7. I think my problem was related to rubygems, at the time I still had 1.3.5.

Later I installed rvm and, again using ruby 1.8.7, I had more luck doing a fresh start by first updating rubygems to 1.3.6 and then running only gem install rails --pre, which automatically grabbed all the gems needed. This way it grabbed memcache_client 1.7.8 (not 1.8.0) and the whole thing worked without a hitch.

So I'd replace the advice listed on the guides with: 1) update rubygems to 1.3.6 (gem update --system #or whatever equivalent you need to do so) 2) then do: gem install rails --pre

With ruby 1.8.7 on snow leopard, that's all it needs.