Rails won't install on Ubuntu because of builder

Posted by Jason Swett on Server Fault See other posts from Server Fault or by Jason Swett
Published on 2010-12-31T20:56:33Z Indexed on 2010/12/31 21:55 UTC
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Can someone explain why gem thinks I don't have builder >= 2.1.2 even though I clearly have 3.0.0?

jason@ve:~$ gem install rails --pre
ERROR:  Error installing rails:
        activemodel requires builder (~> 2.1.2, runtime)
jason@ve:~$ gem list

*** LOCAL GEMS ***

abstract (1.0.0)
activesupport (3.0.3, 3.0.0.rc2)
builder (3.0.0)
erubis (2.6.6)
i18n (0.5.0)
mail (2.2.13)
memcache-client (1.8.5)
mime-types (1.16)
polyglot (0.3.1)
rack (1.2.1)
rack-mount (0.6.13)
rack-test (0.5.6)
text-format (1.0.0)
text-hyphen (1.0.0)
treetop (1.4.9)
tzinfo (0.3.23)
jason@ve:~$

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