On 12/13, Vít Ondruch wrote:
Dne 13.12.2012 10:02, Michal Fojtik napsal(a):
>On 12/13, Vít Ondruch wrote:
>>Dne 12.12.2012 18:36, Miroslav Suchý napsal(a):
>>>On 11/29/2012 09:43 AM, Bohuslav Kabrda wrote:
>>>>- Two connected problems: 1) RPM generates auto provides from
>>>>shebangs, e.g. #!/usr/bin/ruby will automatically require ruby
>>>>package; 2) How to run programs with #!/usr/bin/ruby shebangs
>>>We already have mechanism for that:
>>>/usr/bin/ruby will be symlink to /etc/alternatives/ruby, which
>>>will be symlink to /usr/bin/jruby or /usr/bin/ruby19 (previously
>>>known as /usr/bin/ruby).
>>>And let update-alternatives manage the defaults.
>Maybe a stupid idea, but why we just don't prefix the 'jruby' with
>So we can have lancher in '/usr/bin/jruby'. Similar for irb, gem...
>(jirb, jgem, etc...)
>Then the shebang will be '#!/usr/bin/jruby' and the MRI version can
>cooexist with the jruby.
> -- michal
There is probably million of ruby scripts which has some #!ruby
shebang. If only JRuby is on the system, they'll continue to work.
Why you assume that this 'milion' of ruby scripts with MRI shebangs
will continue to work on jRuby (if only that ruby is installed in
Typical user does not care if he runs something by MRI, JRuby or
Rubinius. S/he only cares if it works.
Well 'typical' user here is someone that wants to run his things on jRuby
in **production**, but develop using MRI (there are milion reasons why),
A typical user will never use Fedora MRI for development but will install
something like RVM or rbenv. Again, milion reasons why.
My point was to make it clear when I run something on my MRI ruby
(development/scripts) and when I run something on jRuby (production).
Btw. are there some personas or something for Ruby users in Fedora?
Bob, the system administrator that wants to have Puppet running.
Dave, web developer that wants to deploy apps on Fedora/RHEL
Having something like that will maybe help in future :-)
Actually, I am speaking about typical user, but I personally don't
care. I don't care if I run gem2rpm by MRI or JRuby, if it works.
You will probably find out in a while, that using 'scripts' on jRuby
isn't the best thing you do ;-) (like JVM boot time, etc).
Michal Fojtik <mfojtik(a)redhat.com>
Deltacloud API, CloudForms