[Neurodebian-devel] ruby
Yaroslav Halchenko
debian at onerussian.com
Thu Apr 12 23:18:18 UTC 2012
I wish I could give a comprehensive reply but I know next to nothing
about Ruby and the way it is maintained in Debian (besides that there
were ... not so smooth periods in "Ruby in Debian" life [1])
[1] e.g. http://www.lucas-nussbaum.net/blog/?p=566
> The problem: Ubuntu 11.10 uses ruby 1.8.
but all recent debian and thus ubuntu releases also provide some
ruby1.9.x package which provides API of ruby 1.9.1 (here it is confusing
to me too a bit(; so why don't you just Depends: ruby1.9.1 (there might be
better/correct way -- check what other ruby packages do) and then use versioned
ruby (i.e. ruby1.9.1) instead of a plain ruby?
$> whohas --strict -D Debian,Ubuntu ruby1.9.1
Ubuntu ruby1.9.1 1.9.1.378-1 26K universe http://packages.ubuntu.com/lucid/ruby1.9.1
Ubuntu ruby1.9.1 1.9.2.0-1 35K universe http://packages.ubuntu.com/maverick/ruby1.9.1
Ubuntu ruby1.9.1 1.9.2.0-2 35K universe http://packages.ubuntu.com/natty/ruby1.9.1
Ubuntu ruby1.9.1 1.9.2.290-2 36K universe http://packages.ubuntu.com/oneiric/ruby1.9.1
Ubuntu ruby1.9.1 1.9.3.0-1ubuntu1 37K http://packages.ubuntu.com/precise/ruby1.9.1
Debian ruby1.9.1 1.9.2.0-2 736K stable http://packages.debian.org/squeeze/ruby1.9.1
Debian ruby1.9.1 1.9.3.0-2 185K testing http://packages.debian.org/wheezy/ruby1.9.1
Debian ruby1.9.1 1.9.3.0-2 185K unstable http://packages.debian.org/sid/ruby1.9.1
Now:
> The issue is that not only /usr/bin/ruby should refer to a version equal or greater than 1.9, but also ruby-gnome2.
looking into its Debian.changelog:
ruby-gnome2 (1.0.0-1) unstable; urgency=low
....
- Build for both ruby1.8 and ruby1.9.1 (Closes: #550806)
...
so (I guess) you just need to Depends: ruby-gnome2 (>= 1.0.0-1)
$> whohas -D Debian,Ubuntu ruby-gnome2
Ubuntu ruby-gnome2 0.16.0-10 1K universe http://packages.ubuntu.com/hardy/ruby-gnome2
Ubuntu ruby-gnome2 0.19.3-1ubuntu3 14K universe http://packages.ubuntu.com/lucid/ruby-gnome2
Ubuntu ruby-gnome2 0.19.3-2ubuntu1 10K universe http://packages.ubuntu.com/maverick/ruby-gnome2
Ubuntu ruby-gnome2 0.19.3-2ubuntu1 10K universe http://packages.ubuntu.com/natty/ruby-gnome2
Ubuntu ruby-gnome2 1.0.0-1 1K universe http://packages.ubuntu.com/oneiric/ruby-gnome2
Ubuntu ruby-gnome2 1.0.3-1build1 1K universe http://packages.ubuntu.com/precise/ruby-gnome2
Debian ruby-gnome2 0.19.3-2 13K stable http://packages.debian.org/squeeze/ruby-gnome2
Debian ruby-gnome2 1.0.3-1 17K testing http://packages.debian.org/wheezy/ruby-gnome2
Debian ruby-gnome2 1.0.3-1 17K unstable http://packages.debian.org/sid/ruby-gnome2
so, for Debian stable and ubuntu < oneiric someone might need to look
into backporting this package (if possible),
thus summarizing
> Questions:
> 1) How can I put in the package dependencies (in the "control" file) that ruby1.9 and the related ruby-gnome will be installed?
Depends: ruby1.9.1, ruby-gnome2 (>= 1.0.0-1~)
(~ in above just in case there would come a backport of that specific debian
package)
> 2) How can I ensure that a call to /usr/bin/ruby actually calls /usr/bin/ruby1.9.
I would not although technically it is possible since
$> sudo update-alternatives --config ruby
There are 2 choices for the alternative ruby (providing /usr/bin/ruby).
Selection Path Priority Status
------------------------------------------------------------
* 0 /usr/bin/ruby1.8 50 auto mode
1 /usr/bin/ruby1.8 50 manual mode
2 /usr/bin/ruby1.9.1 10 manual mode
Press enter to keep the current choice[*], or type selection number:
but because there is no guarantee that all ruby modules are working with 1.9
you might break functioning of them...
and I would adjust the scripts to call ruby1.9.1 directly.
> I am not sure how to deal with this, especially systems that have both 1.8 and 1.9 installed. To make things harder, some Debians have 1.9.1 some 1.9.2, for me any 1.9.* is good.
just depend on ruby1.9.1 which should provide you with a needed version
On Thu, 12 Apr 2012, psytoolkit wrote:
> Hi,
> I am working on a PsyToolkit Debian package. PsyToolkit uses ruby. In the next version, it works only with ruby 1.9, which nowadays is the ruby default anyway.
> The problem: Ubuntu 11.10 uses ruby 1.8. I know that the next Ubuntu will have 1.9, but I still would like to make sure that PsyToolkit runs on all (older) debian based Linux versions.
> The issue is that not only /usr/bin/ruby should refer to a version equal or greater than 1.9, but also ruby-gnome2.
> 2) How can I ensure that a call to /usr/bin/ruby actually calls /usr/bin/ruby1.9.
> I am not sure how to deal with this, especially systems that have both 1.8 and 1.9 installed. To make things harder, some Debians have 1.9.1 some 1.9.2, for me any 1.9.* is good.
> Thank you so much for your help.
> PsyToolkit team.
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