From: Jen <fluffy_bunny_1988@...>
Date: 2010-10-31T09:23:23+09:00
Subject: Re: problem with ruby1.9.2 and gems on Debian

Hi,

Managed to gget gems working. I had a bit of a problem with aptitude not 
removing everything I expected it to, so after a bit of playing I got it 
working with ruby-1.9.2.

Now I've got some other issues with my rails app, but I'll post to a 
more specific rails forum.

Thanks,
Jen.


On 25/10/10 08:35, Rajinder Yadav wrote:
> On 10-10-24 04:17 PM, Jen wrote:
>> Hi,
>> I installed rubygems 1.3.7, then decided to upgrade from ruby1.8 to
>> ruby1.9.2.
>>
>> I forgot to uninstall rubygems before installing ruby1.9.2, as I didn't
>> realise gems came with it.
>>
>> Now I want to install some gems, but when I run 'gem install rails' I
>> get the following error.
>>
>> ERROR: Loading command: install (LoadError)
>> no such file to load -- zlib
>> ERROR: While executing gem ... (NameError)
>> uninitialized constant Gem::Commands::InstallCommand
>>
>> Can I repare 'gems? If not should I remove ruby1.9.2, rubygems1.3.7 and
>> start again?
>>
>> It may be worth mentioning that I built these packages on Debian Lenny
>> from source, and they are not in the database used by 'apt' etc.
>>
>> I have tried removing all traces of Ruby and rubygems from the system,
>> then rebuilding and installing ruby1.9.2
>>
>> Thanks,
>> Jen.
>>
>>
> possibly you just need to do the following to add the missing zlib 
> header files:
>
> sudo aptitude install zlib1g-dev
>
> you might also want to add these header files(if you have not already)
>
> sudo aptitude install libc6-dev libssl-dev
> sudo aptitude install libreadline6-dev zlib1g-dev libsqlite3-dev
>
> once you have a working ruby install rails and sqlite3
>
> sudo gem install rails
> sudo gem install sqlite3-ruby
>