[MacRuby-devel] Does MacRuby Play Well with RVM?

[Chris Rhoden]

This is a problem with MacRuby, not Rubygems

On Sat, May 21, 2011 at 11:38 PM, Mark Rada <mrada at marketcircle.com> wrote:

> Not true.
>
> For those of us that have a lot of gems, being able to use gemsets with
> MacRuby can yield significant speed ups when loading something that requires
> a gem.
>
> As a quick benchmark I chose to load the "abstract" gem because it is a
> single file weighing in at 75 lines (including comments and white space),
> then I tried loading it with varying numbers of other gems installed:
>
> macruby -rubygems -e "start = Time.now; require 'abstract'; p Time.now -
> start"
>
> 0 other gems:   0.180205 seconds
> 1 other gem:     0.310673 seconds
> 10 other gems: 0.795038 seconds
> 23 other gems: 2.478057 seconds
>
> 23 gems seems odd, but that is how many other gems are installed when you
> install rails. If you have rails and then some other gems, the load time
> would be much worse because, as you can see, the performance degradation is
> _exponential_. This performance issue will eventually go away, but not any
> time soon.
>
> For me, this is a "real" reason for using rvm, but this may not be the case
> for everyone.
>
>
> Mark Rada
> mrada at marketcircle.com
>
>
>
> On 2011-05-21, at 10:04 PM, Chris Rhoden wrote:
>
> The point of my email was:
>
> Use RVM to install 1.9.2 or jRuby or whatever.
>
> Install MacRuby from source or the package, and execute it using `macruby`,
> `macirb`, and the like. There is no reason to overload `ruby` to point at
> macruby, which is the only real benefit RVM gets you.
>
> On Fri, May 20, 2011 at 8:09 PM, Mark Rada <mrada at marketcircle.com> wrote:
>
>> I have been using rvm with MacRuby a while now, mostly for the use of
>> gemsets. I have been able to switch between MacRuby 0.10 and the "nightly"
>> builds without issue including several different gemsets for "nightly"
>> builds.
>>
>> However, there will be issues if you are developing with Xcode. But they
>> are pretty easy to keep up with.
>>
>> 1. Outside of an rvm enabled shell, the most recently installed version of
>> MacRuby is the default.
>>
>> 2. Similarly, using gems with an app will require you to install the gems
>> using macgem explicitly (or setting your GEM_PATH to point to where rvm is
>> storing stuff).
>>
>> Sent from my iDevice
>>
>> On 2011-05-20, at 18:18, Shannon Love <techzen at me.com> wrote:
>>
>> > Last week I attempted to install RVM on my system so I could use various
>> versions of Ruby including Macruby. I encountered problems including a
>> reinstall of RVM that had incorrect permissions. However, it is quite
>> possible that all the errors were the result of my naviety about the ruby
>> environment so I'm willing to give it another go.
>> >
>> > Has anyone else used RVM with Macruby and does it work well? Can I
>> safely run multiple versions of Macruby? Will it alter or contaminate the
>> regular installed version?
>> >
>> > Any advice would be appreciated.
>> >
>> > Thanks,
>> > Shannon
>> > _______________________________________________
>> > MacRuby-devel mailing list
>> > MacRuby-devel at lists.macosforge.org
>> > http://lists.macosforge.org/mailman/listinfo.cgi/macruby-devel
>>
>> _______________________________________________
>> MacRuby-devel mailing list
>> MacRuby-devel at lists.macosforge.org
>> http://lists.macosforge.org/mailman/listinfo.cgi/macruby-devel
>>
>
>
>
> --
> chrisrhoden
>  _______________________________________________
> MacRuby-devel mailing list
> MacRuby-devel at lists.macosforge.org
> http://lists.macosforge.org/mailman/listinfo.cgi/macruby-devel
>
>
>
> _______________________________________________
> MacRuby-devel mailing list
> MacRuby-devel at lists.macosforge.org
> http://lists.macosforge.org/mailman/listinfo.cgi/macruby-devel
>
>


-- 
chrisrhoden
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.macosforge.org/pipermail/macruby-devel/attachments/20110521/c05cffcc/attachment-0001.html>