Rails didn't install correctly

[Steve Litt]

Hi all,

I already sent this to the Rails list, but I figure someone here might know=
=20
how to troubleshoot this.

Apparently rails didn't install correctly on my Mandrake 10.0 system.
=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=
=3D=3D=3D=3D=3D=3D=3D=3D
[slitt@mydesk work]$ rails demo
/usr/local/lib/ruby/site_ruby/1.8/rubygems.rb:204:in `report_activate_error=
':=20
Could not find RubyGem rails (> 0) (Gem::LoadError)
=A0 =A0 =A0 =A0 from /usr/local/lib/ruby/site_ruby/1.8/rubygems.rb:141:in `=
activate'
=A0 =A0 =A0 =A0 from /usr/local/lib/ruby/site_ruby/1.8/rubygems.rb:37:in=20
`require_gem_with_options'
=A0 =A0 =A0 =A0 from /usr/local/lib/ruby/site_ruby/1.8/rubygems.rb:31:in `r=
equire_gem'
=A0 =A0 =A0 =A0 from /usr/bin/rails:17
[slitt@mydesk work]$
=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=
=3D=3D=3D=3D=3D=3D=3D=3D

What is "RubyGem rails (> 0)"?

I installed rails with this command as root:

gem install rails --include-dependencies

It errored out (can't remember what it didn't find) so I ran it again and i=
t=20
said it installed successfully.

My Mandrake 10.0 came with Ruby 1.8.1 which is insufficient for rails, so I=
=20
installed ruby 1.8.4 in /usr/local/bin, and then renamed the ruby in /usr/b=
in=20
to ruby.1.8.1, and then set up a symlink from /usr/bin/ruby=20
to /usr/local/bin/ruby. At that point, running Ruby brought up 1.8.4.

I have no idea what the error message meant by "RubyGem rails (> 0)". Can=20
anyone give me some hints on how to troubleshoot this?

Thanks

SteveT

Steve Litt
http://www.troubleshooters.com
(e-mail address removed)

 

[Jon Baer]

If I can remember correctly I had to set env variable RUBY_LIB to it's
corresponding path ... /usr/local/lib/ruby/site_ruby/1.8/ in order to
get gems and rails to work ... may want to try that.

 

[Steve Litt]

Hi all,

What I did was reinstalled, but this time without the --include-dependencie=
s.

gem install rails

This meant that for each dependency, I had to say yes. The install appeared=
to=20
go through cleanly. I then did rails demo, and it did the right thing, and=
=20
after this:

cd /home/slitt/work/demo
ruby script/server

I was able to pull up a rails generated page on http://localhost:3000.

I have NO IDEA why installing without the --include-dependencies would have=
=20
made the problem go away, or even whether the thing that fixed it was just=
=20
doing one more install of any kind. What I do know is I found out about=20
running without --include-dependencies after google searching the error=20
message, and that email thread suggested just gem install rails.

If anyone else asks about a "Could not find RubyGem rails" error, please te=
ll=20
them to try not using --include-dependencies, and please tell me what=20
happened, as I'd like to find the true root cause of this problem.

Thanks

SteveT