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List:       freebsd-hackers
Subject:    Re: Discussing ideas or wish list
From:       Yuri <yuri () rawbw ! com>
Date:       2013-08-11 6:47:11
Message-ID: 5207336F.5070307 () rawbw ! com
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On 08/09/2013 09:34, Patrick Dung wrote:
> Some (crazy?) ideas:
> a) Is it possible to install multiple Perl versions in the same server?
> Each third party Perl packages would linked to the corresponding Perl versions?
> Users have to update /usr/bin/perl to link to the desired Perl version (or using \
> wrapper mechanism like /etc/mail/mail.conf).

Being able to create multiple unique environments on the same host is 
very beneficial.

I believe Oracle Solaris on ZFS is able to install individual packages 
into separate zones, and ZFS can share certain zones between each other.
Manipulating sharing rules allows creation of exactly this: various 
unique set of packages in top-level zones. So for example, perl and all 
its dependent packages can be installed multiple times in multiple 
versions in different ZFS zones on top of shared dependency packages.

Unfortunately, FreeBSD version of ZFS lacks zones.

Yuri
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