From: "Ara.T.Howard" <Ara.T.Howard@...>
Date: 2005-10-27T05:50:53+09:00
Subject: Re: gem - install to different bindir?

On Thu, 27 Oct 2005, Jeremy Kemper wrote:

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> On Oct 26, 2005, at 1:21 PM, Ara.T.Howard wrote:
>> i have the following setup
>> 
>>   /usr/local/ruby-1.8.0
>>   /usr/local/ruby-1.8.3
>>   /usr/local/ruby-1.9.0
>> 
>>   /usr/local/bin/ruby180 -> /usr/local/ruby-1.8.0/bin/ruby
>>   /usr/local/bin/ruby183 -> /usr/local/ruby-1.8.3/bin/ruby
>>   /usr/local/bin/ruby190 -> /usr/local/ruby-1.9.0/bin/ruby
>>   /usr/local/bin/ruby    -> /usr/local/ruby-1.9.0/bin/ruby
>> 
>> 
>> only /usr/local/bin is in my path.  say i want to install rake.
>> 
>>   gem install rake
>> 
>> the lib files obviously go into
>> 
>>   /usr/local/ruby-1.9.0/lib/
>> 
>> but i want the bin files to land here
>> 
>>   /usr/local/bin/rake
>> 
>> i see the --install-dir option, how does one specify separate lib and bin
>> directories with gem installs?
>
> I have a similar multi-versioned Ruby install.  I move the gem-installed 
> binfiles by hand and rename them according the Ruby version they expect: 
> e.g., gem19, rake18-cvs.  It would be wonderful if RubyGems could reuse the 
> details I already fed to ruby ./configure.

an even simpler solution might be

   require 'pathname'

   bindir = Pathname::new($0).dirname

so, in the case of a link like

   /usr/local/bin/ruby18 -> /usr/local/bin/ruby-1.8.1/bin/ruby

this would resolve to /usr/local/bin

it seems that getting bindir info from rbconfig is simply not correct - after
all, that was the bindir info for ruby - not the code one is currently
installing.

a more generic option might be a way to clobber Config::CONFIG values.
something like

   --config bindir=/usr/local/bin/

   -c bindir=/usr/local/bin

or just take any key value paris on the command line like

   bindir=/usr/local/bin

which would, in turn, do

   Config::CONFIG['bindir'] = '/usr/local/bin'

so - go ahead and support command line munging of rbconfig if it's taken to be
the master.

i could easily work up a patch if people are interested?

-a
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